BoP Lab / Michelin Raceway Road Atlanta

P2 + SRF + FV + FP at Michelin Raceway Road Atlanta

SRF has no laps in the events chosen. It ran at U.S. 2016: add that event.

Official results win over the timing feed: the live timing recorded a 1:46.319 for Donnie Isley in Super Tour Mar 2023 Grp 3 F6,FF,FV Race 1, but the official results credit 1:55.894 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.487 for Trevor Carmody in Super Tour Mar 2023 Grp 3 F6,FF,FV Race 1, but the official results credit 1:58.264 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:46.209 for Stevan Davis in Super Tour Mar 2023 Grp 3 F6,FF,FV Race 1, but the official results credit 1:58.205 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:48.336 for Russell Fredericks in Super Tour Mar 2023 Grp 3 F6,FF,FV Race 1, but the official results credit 2:01.684 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:47.543 for Jonathan Weisheit in Super Tour Mar 2023 Grp 3 F6,FF,FV Race 1, but the official results credit 1:56.825 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:38.568 for Mason Workman in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:41.850 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.671 for Perry Simonds in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:42.681 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.473 for Mark Weber in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:58.872 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:52.000 for Gregg Seigart in Super Tour Mar 2023 Grp 6 EP,FP,Hp,GTL Race 1, but the official results credit 1:59.629 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:23.804 for Lucian Pancea in Super Tour Mar 2023 Grp 7 FA,FC,FE2,FX,P1,P2 Race 1, but the official results credit 1:34.097 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:26.574 for Thomas Kaufman in Super Tour Mar 2023 Grp 7 FA,FC,FE2,FX,P1,P2 Race 1, but the official results credit 1:41.746 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:28.363 for Peter Shadowen in Super Tour Mar 2023 Grp 7 FA,FC,FE2,FX,P1,P2 Race 1, but the official results credit 1:41.630 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:44.874 for Stevan Davis in Super Tour Mar 2024 Grp 8 F6,FF,FV Race 1, but the official results credit 1:46.193 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:51.031 for William Duke Ragsdale in Super Tour Mar 2024 Grp 8 F6,FF,FV Race 1, but the official results credit 1:51.060 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.332 for Stephen Simonds in Super Tour Mar 2025 Grp 6 EP FP HP B-Spec Race 1, but the official results credit 1:40.560 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.676 for Mark Weber in Super Tour Mar 2025 Grp 6 EP FP HP B-Spec Race 1, but the official results credit 1:42.215 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.600 for Ken Kannard in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.771 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:39.386 for Cliff Ira in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.427 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:41.177 for Steven Powers in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:48.283 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too; the live timing recorded a 1:42.165 for Robert Garrison in Super Tour Mar 2026 Grp 5 EP FP HP B-Spec Race 1, but the official results credit 1:47.908 as the car's fastest, so the timing system did not count that lap (usually a lap under a full-course yellow or a timing-loop fault); it is left out here too.

One lap is left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Stohr (2013)	Lucian Pancea 2+ cars	P2	99	1:22.533 D-Q2	1:22.533	1:22.533 D-Q2	1:34.097 D-R2	1:35.876 D-R2	+7.226 D-R2	143.9 D-Q2	31.424 D-Q2	29.678 D-Q2	21.431 D-Q2
2	Stohr 2013 Stohr P2 (2013)	Lucian Pancea 2+ cars	P2	93	1:24.228 C-Q2	1:24.228	1:24.228 C-Q2	1:44.111 C-R2	3:18.424 C-R1	+25.114 C-R1	134.0 C-Q1	32.262 C-Q2	30.249 C-Q2	21.717 C-Q2
3	Stohr WF1 (2018)	Sherman Chao	P2	03	1:24.366 C-Q2	1:23.926	1:24.366 C-Q2	1:26.052 D-R1	1:31.800 C-R2	+26.562 C-R2	138.2 D-R1	31.723 C-Q2	30.127 C-Q2	22.076 C-Q2
4	Stohr WFX-101	Thomas Kaufman	P2	107	1:25.444 D-Q2	1:25.410	1:25.444 D-Q2	1:41.746 D-R2	1:42.650 D-R2	+6.662 D-R2	138.8 D-Q2	32.418 D-Q2	30.806 D-Q2	22.186 D-Q2
5	West WX10	Peter Shadowen	P2	12	1:26.716 D-Q1	1:26.221	1:26.716 D-Q1	1:41.630 D-R2	1:43.850 D-R2	+9.582 D-R2	137.3 D-Q2	32.952 D-Q2	30.870 D-Q2	22.399 D-Q2
6	Stohr WF1 (2003)	Michael Moulton	P2	77	1:28.086 C-Q2	1:27.859	1:28.086 C-Q2	1:29.061 C-R2	1:42.614 C-R2	+49.267 C-R2	132.9 C-Q1, C-R2	34.071 C-Q2	30.851 C-Q2	22.937 C-Q2
7	Van Diemen Prince - LSR (2022)	Brian Lindstrand	P2	04	1:29.395 C-Q2	1:29.280	1:29.395 C-Q2	1:30.739 C-R2	1:42.673 C-R2	+47.278 C-R2	131.0 C-Q1	34.337 C-Q2	32.039 C-Q2	22.904 C-Q2
8	Acura Integra	Ken Kannard	FP	51	1:37.623 C-R2	sector data unreliable	1:37.924 C-Q2	1:37.623 C-R2	1:38.167 C-R2	+1.332 C-R2	122.9 A-Q1	37.585	0.792	24.740
9	Mazda Miata (1992)	Mason Workman	FP	52	1:38.226 B-Q2	1:37.974	1:38.226 B-Q2	1:38.805 C-R2	1:39.090 C-R2	+2.802 C-R2	120.2 D-Q2	37.238 C-Q2	35.576 D-Q2	25.160 D-Q2
10	Honda CRX (1988)	Chris Bovis	FP	178	1:38.576 B-Q1	1:38.061	1:38.576 B-Q1	1:38.655 B-R2	1:40.253 B-R1	+1.209 B-R1	117.3 B-R2	37.788 B-Q2	35.332 B-R2	24.941 B-Q1
11	BMW 325es	Matt Reppert	FP	88	1:38.885 D-Q2	1:38.656	1:38.885 D-Q2	1:38.946 D-R1	1:39.189 D-R1	+0.711 D-R1	122.1 D-R1	37.730 D-R1	35.717 D-R1	25.209 D-Q2
12	Honda Civic Del Sol VTEC	Cliff Ira	FP	36	1:39.502 A-Q1	1:38.814	1:39.502 A-Q1	1:48.427 A-R2	1:48.964 A-R2	+6.135 A-R2	123.3 A-Q1	38.104 A-Q1	35.234 A-Q1	25.476 A-Q1
13	Mazda MIata	Steven Powers	FP	145	1:40.329 A-Q2	1:40.226	1:40.329 A-Q2	1:48.283 A-R2	1:49.211 A-R2	+3.905 A-R2	118.4 A-Q2	38.142 A-Q2	36.400 A-Q2	25.684 A-Q2
14	Mazda Miata (1990)	Stephen Simonds	FP	63	1:40.560 B-R2	sector data unreliable	1:40.686 B-Q2	1:40.560 B-R2	1:40.971 B-R2	+1.297 B-R2	113.4 B-R2	38.314	0.778	25.592
15	Mazda Miata (1992)	Peter Tonelli II	FP	91	1:41.072 C-R2	1:40.896	1:41.593 C-Q2	1:41.072 C-R2	1:42.201 C-R2	+2.934 C-R2	106.7 C-R2	38.226 C-Q2	36.798 C-R2	25.872 C-R2
16	Mazda Miata	Robert Garrison	FP	06	1:41.644 A-Q1	1:41.563	1:41.644 A-Q1	1:47.908 A-R2	1:49.665 A-R2	+5.548 A-R2	119.0 A-R2	38.892 A-Q1	36.536 A-Q1	26.135 A-Q1
17	Mazda Miata	Perry Simonds	FP	164	1:41.729 D-Q1	1:41.729	1:41.729 D-Q1	1:42.681 D-R2	1:44.666 D-R2	+5.022 D-R2	120.2 D-Q1	40.087 D-R2	36.374 D-Q1	25.814 D-Q1
18	Mazda Miata - FP (1993)	Mark Weber	FP	25	1:41.786 B-Q2	1:41.472	1:41.786 B-Q2	1:42.215 B-R2	1:42.904 B-R2	+2.047 B-R2	122.4 D-Q2	39.042 B-Q2	36.275 B-Q2	26.155 B-Q2
19	Protoform P2 (1997)	Andrew Whitston	FV	72	1:43.556 C-R2	1:43.258	1:44.524 C-Q1	1:43.556 C-R2	1:44.315 C-R2	+1.645 C-R2	102.2 C-R2	38.495 C-R2	37.974 C-Q1	26.789 C-R1
20	Vorscha GB4 (1999)	Mitchell Ferguson	FV	52	1:43.727 C-R2	1:43.453	1:45.537 C-Q1	1:43.727 C-R2	1:44.953 C-R2	+1.929 C-R2	107.9 D-R1	38.733 C-R2	37.804 C-R2	26.916 D-R1
21	Acura Integra	Les Chaney	FP	33	1:43.861 D-R1	1:43.716	1:46.823 D-Q2	1:43.861 D-R1	1:44.600 D-R1	+2.050 D-R1	121.7 D-Q2, D-R1	40.568 D-R1	36.332 D-R1	26.816 D-R1
22	Protoform P2	Mike Lawrence	FV	36	1:44.011 C-R2	1:43.448	1:44.684 C-Q1	1:44.011 C-R2	1:45.285 C-R2	+2.269 C-R2	105.7 A-R1	38.779 C-R2	37.547 C-R2	27.122 C-Q1
23	Volkswagen Protoform P2 (1997)	Steve Whitston	FV	18	1:44.543 C-R2	1:43.674	1:47.631 C-Q1	1:44.543 C-R2	1:44.979 C-R2	+1.230 C-R2	100.8 C-R2	38.681 C-R2	37.994 C-R2	26.999 C-R1
24	Agitator 016	Donnie Isley	FV	30	1:45.061 A-Q1	1:44.716	1:45.061 A-Q1	1:45.145 C-R2	1:46.709 C-R1	+2.026 C-R1	107.1 A-R1	39.108 C-R2	38.266 A-Q1	27.342 A-Q1
25	Vortech (2011)	Stevan Davis	FV	80	1:45.108 C-Q1	1:45.066	1:45.108 C-Q1	1:46.193 C-R2	1:46.584 C-R2	+0.969 C-R2	105.3 D-Q2	39.467 C-R2	38.215 C-Q1	27.384 C-Q1
26	Vortech 0	Anthony Henderson	FV	17	1:46.846 A-Q2	1:46.742	1:46.846 A-Q2	1:48.094 A-R1	1:48.311 A-R1	+1.076 A-R1	105.3 A-Q1	40.017 A-Q2	39.235 A-Q2	27.490 A-Q2
27	Vorscha GB3 (1999)	Smith Jackson Ragsdale	FV	2	1:47.324 C-R2	1:46.764	1:57.449 C-Q2	1:47.324 C-R2	1:47.590 C-R2	+0.596 C-R2	98.4 C-R1	39.639 C-R2	39.124 C-R1	28.001 C-R2
28	Mysterian M2 (1992)	Michael Nitz 2+ cars	FV	94	1:47.478 C-R2	1:46.713	1:47.545 C-Q1	1:47.478 C-R2	1:48.309 C-R2	+2.205 C-R2	99.5 C-R2	40.302 C-Q1	38.742 C-R1	27.669 C-R1
29	Protoform P2 (1996)	Ron Whitston	FV	5	1:48.017 C-R2	1:47.589	1:48.590 C-Q1	1:48.017 C-R2	1:48.705 C-R2	+1.264 C-R2	100.0 C-R1	40.887 C-R2	39.284 C-R2	27.418 C-R1
30	Volkswagen Protoform	Trevor Carmody	FV	7	1:48.091 D-Q2	1:47.428	1:48.091 D-Q2	1:58.263 D-R2	2:01.502 D-R2	+5.106 D-R2	101.8 D-Q2	40.188 D-Q2	39.317 D-Q2	27.923 D-Q2
31	Protoform P3 (2006)	Rich Richardson 2+ cars	FV	64	1:48.141 C-R2	1:47.582	1:52.689 C-Q1	1:48.141 C-R2	1:48.473 C-R2	+1.364 C-R2	98.5 C-R1	41.004 C-R2	38.798 C-R2	27.780 C-R2
32	Mysterian M3 (1996)	Mark Richardson 2+ cars	FV	20	1:49.107 C-R2	1:48.658	1:50.256 C-Q1	1:49.107 C-R2	1:49.886 C-R2	+1.935 C-R2	100.3 C-R1	41.213 C-R2	39.424 C-R1	28.021 C-R2
33	Caracal D	Russell Fredericks	FV	23	1:49.406 D-Q2	1:49.018	1:49.406 D-Q2	2:01.684 D-R2	2:03.036 D-R2	+3.070 D-R2	104.1 D-Q2	41.122 D-Q2	40.095 D-Q2	27.801 D-Q2
34	Protoform P2	Michael Nitz 2+ cars	FV	94	1:49.464 A-Q2	1:48.538	1:49.464 A-Q2	1:49.714 A-R1	1:49.998 A-R1	+1.110 A-R1	103.8 A-Q1	41.062 A-R1	39.681 A-R1	27.795 A-R1
35	Lazer 1	Rich Richardson 2+ cars	FV	99	1:49.498 A-R1	1:49.060	1:50.080 A-Q2	1:49.498 A-R1	1:50.116 A-R1	+1.776 A-R1	102.5 A-Q1	41.168 A-R1	39.823 A-R1	28.069 A-R1
36	Mysterian M2	Jacob Schilling	FV	85	1:50.348 A-R1	1:49.765	1:51.018 A-Q1	1:50.348 A-R1	1:51.279 A-R1	+2.498 A-R1	103.8 A-R1	41.717 A-R1	39.978 A-Q1	28.070 A-R1
37	Mazda Miata	Gregg Seigart	FP	48	1:50.884 D-Q2	1:50.652	1:50.884 D-Q2	1:59.629 D-R2	2:00.941 D-R2	+2.699 D-R2	109.4 D-Q2	43.023 D-Q2	39.471 D-Q2	28.158 D-Q2
38	Vortech 0	Mark Richardson 2+ cars	FV	88	1:50.913 A-R1	1:50.320	1:51.390 A-Q2	1:50.913 A-R1	1:51.900 A-R1	+2.084 A-R1	103.0 A-R1	41.990 A-R1	39.924 A-R1	28.406 A-R1
39	Volkswagen Crusader (1982)	William Duke Ragsdale	FV	03	1:51.060 C-R2	1:49.305	2:01.913 C-Q2	1:51.060 C-R2	1:51.237 C-R2	+0.464 C-R2	96.6 C-R2	40.655 C-R2	39.992 C-R2	28.658 C-R2
40	Caracel C	John Mcaleer	FV	2	1:51.291 A-R1	1:50.312	1:52.321 A-Q2	1:51.291 A-R1	1:52.552 A-R1	+2.364 A-R1	104.6 A-R1	41.585 A-R1	40.766 A-R1	27.961 A-R1
41	JK Technologies XP-1	Jonathan Weisheit	FV	61	1:52.465 D-Q2	1:51.072	1:52.465 D-Q2	1:56.826 D-R2	1:58.629 D-R2	+2.878 D-R2	102.5 D-R1	41.732 D-Q2	41.272 D-R1	28.068 D-R1
42	Citation CW1	Barry Shelton	FV	96	1:52.837 A-R1	1:52.162	1:53.780 A-Q2	1:52.837 A-R1	1:53.328 A-R1	+0.621 A-R1	100.4 A-Q2	42.282 A-R1	41.029 A-R1	28.851 A-R1
43	Fiat 124 Spider (1974)	Douglas Sanders >115%	FP	10	2:08.730 C-R2	2:07.979		2:08.730 C-R2	2:12.245 C-R2	+3.936 C-R2	91.2 C-R2	50.604 C-R2	42.988 C-R2	34.387 C-R2

About this data

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. The columns are about the car: its best lap, the lap its best sectors add up to, its sector times and trap speed. "Driver metrics" adds two about the driver: the best 5-lap stint (mean of the quickest five consecutive race laps) and consistency (how far the median race lap sat behind the best in that race; small is a driver who does it every lap), both from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
Stohr	P2	1	1:22.533Lucian Pancea	1:22.533Lucian Pancea	1:34.097Lucian Pancea	143.9Lucian Pancea	31.424Lucian Pancea	29.678Lucian Pancea	21.431Lucian Pancea
Stohr 2013 Stohr P2	P2	1	1:24.228Lucian Pancea	1:24.228Lucian Pancea	1:44.111Lucian Pancea	134.0Lucian Pancea	32.262Lucian Pancea	30.249Lucian Pancea	21.717Lucian Pancea
Stohr WF1	P2	2	1:24.366Sherman Chao	1:24.366Sherman Chao	1:26.052Sherman Chao	138.2Sherman Chao	31.723Sherman Chao	30.127Sherman Chao	22.076Sherman Chao
Stohr WF1 (2018)	P2	1	1:24.366Sherman Chao	1:24.366Sherman Chao	1:26.052Sherman Chao	138.2Sherman Chao	31.723Sherman Chao	30.127Sherman Chao	22.076Sherman Chao
Stohr WF1 (2003)	P2	1	1:28.086Michael Moulton	1:28.086Michael Moulton	1:29.061Michael Moulton	132.9Michael Moulton	34.071Michael Moulton	30.851Michael Moulton	22.937Michael Moulton
Stohr WFX-101	P2	1	1:25.444Thomas Kaufman	1:25.444Thomas Kaufman	1:41.746Thomas Kaufman	138.8Thomas Kaufman	32.418Thomas Kaufman	30.806Thomas Kaufman	22.186Thomas Kaufman
West WX10	P2	1	1:26.716Peter Shadowen	1:26.716Peter Shadowen	1:41.630Peter Shadowen	137.3Peter Shadowen	32.952Peter Shadowen	30.870Peter Shadowen	22.399Peter Shadowen
Van Diemen Prince - LSR	P2	1	1:29.395Brian Lindstrand	1:29.395Brian Lindstrand	1:30.739Brian Lindstrand	131.0Brian Lindstrand	34.337Brian Lindstrand	32.039Brian Lindstrand	22.904Brian Lindstrand
Acura Integra	FP	2	1:37.623Ken Kannard	1:37.924Ken Kannard	1:37.623Ken Kannard	122.9Ken Kannard	37.585Ken Kannard	0.792Ken Kannard	24.740Ken Kannard
Mazda Miata	FP	8	1:38.226Mason Workman	1:38.226Mason Workman	1:38.805Mason Workman	122.4Mark Weber	37.238Mason Workman	0.778Stephen Simonds	25.160Mason Workman
Mazda Miata (1992)	FP	2	1:38.226Mason Workman	1:38.226Mason Workman	1:38.805Mason Workman	120.2Mason Workman	37.238Mason Workman	35.576Mason Workman	25.160Mason Workman
Mazda MIata	FP	1	1:40.329Steven Powers	1:40.329Steven Powers	1:48.283Steven Powers	118.4Steven Powers	38.142Steven Powers	36.400Steven Powers	25.684Steven Powers
Mazda Miata (1990)	FP	1	1:40.560Stephen Simonds	1:40.686Stephen Simonds	1:40.560Stephen Simonds	113.4Stephen Simonds	38.314Stephen Simonds	0.778Stephen Simonds	25.592Stephen Simonds
Mazda Miata	FP	3	1:41.644Robert Garrison	1:41.644Robert Garrison	1:42.681Perry Simonds	120.2Perry Simonds	38.892Robert Garrison	36.374Perry Simonds	25.814Perry Simonds
Mazda Miata - FP (1993)	FP	1	1:41.786Mark Weber	1:41.786Mark Weber	1:42.215Mark Weber	122.4Mark Weber	39.042Mark Weber	36.275Mark Weber	26.155Mark Weber
Honda CRX	FP	1	1:38.576Chris Bovis	1:38.576Chris Bovis	1:38.655Chris Bovis	117.3Chris Bovis	37.788Chris Bovis	35.332Chris Bovis	24.941Chris Bovis
BMW 325es	FP	1	1:38.885Matt Reppert	1:38.885Matt Reppert	1:38.946Matt Reppert	122.1Matt Reppert	37.730Matt Reppert	35.717Matt Reppert	25.209Matt Reppert
Honda Civic Del Sol VTEC	FP	1	1:39.502Cliff Ira	1:39.502Cliff Ira	1:48.427Cliff Ira	123.3Cliff Ira	38.104Cliff Ira	35.234Cliff Ira	25.476Cliff Ira
Protoform P2	FV	4	1:43.556Andrew Whitston	1:44.524Andrew Whitston	1:43.556Andrew Whitston	105.7Mike Lawrence	38.495Andrew Whitston	37.547Mike Lawrence	26.789Andrew Whitston
Protoform P2 (1997)	FV	1	1:43.556Andrew Whitston	1:44.524Andrew Whitston	1:43.556Andrew Whitston	102.2Andrew Whitston	38.495Andrew Whitston	37.974Andrew Whitston	26.789Andrew Whitston
Protoform P2	FV	2	1:44.011Mike Lawrence	1:44.684Mike Lawrence	1:44.011Mike Lawrence	105.7Mike Lawrence	38.779Mike Lawrence	37.547Mike Lawrence	27.122Mike Lawrence
Protoform P2 (1996)	FV	1	1:48.017Ron Whitston	1:48.590Ron Whitston	1:48.017Ron Whitston	100.0Ron Whitston	40.887Ron Whitston	39.284Ron Whitston	27.418Ron Whitston
Vorscha GB4	FV	1	1:43.727Mitchell Ferguson	1:45.537Mitchell Ferguson	1:43.727Mitchell Ferguson	107.9Mitchell Ferguson	38.733Mitchell Ferguson	37.804Mitchell Ferguson	26.916Mitchell Ferguson
Volkswagen Protoform P2	FV	2	1:44.543Steve Whitston	1:47.631Steve Whitston	1:44.543Steve Whitston	101.8Trevor Carmody	38.681Steve Whitston	37.994Steve Whitston	26.999Steve Whitston
Volkswagen Protoform P2 (1997)	FV	1	1:44.543Steve Whitston	1:47.631Steve Whitston	1:44.543Steve Whitston	100.8Steve Whitston	38.681Steve Whitston	37.994Steve Whitston	26.999Steve Whitston
Volkswagen Protoform	FV	1	1:48.091Trevor Carmody	1:48.091Trevor Carmody	1:58.263Trevor Carmody	101.8Trevor Carmody	40.188Trevor Carmody	39.317Trevor Carmody	27.923Trevor Carmody
Agitator 016	FV	1	1:45.061Donnie Isley	1:45.061Donnie Isley	1:45.145Donnie Isley	107.1Donnie Isley	39.108Donnie Isley	38.266Donnie Isley	27.342Donnie Isley
Vortech 0	FV	3	1:45.108Stevan Davis	1:45.108Stevan Davis	1:46.193Stevan Davis	105.3Anthony Henderson	39.467Stevan Davis	38.215Stevan Davis	27.384Stevan Davis
Vortech (2011)	FV	1	1:45.108Stevan Davis	1:45.108Stevan Davis	1:46.193Stevan Davis	105.3Stevan Davis	39.467Stevan Davis	38.215Stevan Davis	27.384Stevan Davis
Vortech 0	FV	2	1:46.846Anthony Henderson	1:46.846Anthony Henderson	1:48.094Anthony Henderson	105.3Anthony Henderson	40.017Anthony Henderson	39.235Anthony Henderson	27.490Anthony Henderson
Vorscha GB3	FV	1	1:47.324Smith Jackson Ragsdale	1:57.449Smith Jackson Ragsdale	1:47.324Smith Jackson Ragsdale	98.4Smith Jackson Ragsdale	39.639Smith Jackson Ragsdale	39.124Smith Jackson Ragsdale	28.001Smith Jackson Ragsdale
Mysterian M2	FV	2	1:47.478Michael Nitz	1:47.545Michael Nitz	1:47.478Michael Nitz	103.8Jacob Schilling	40.302Michael Nitz	38.742Michael Nitz	27.669Michael Nitz
Mysterian M2 (1992)	FV	1	1:47.478Michael Nitz	1:47.545Michael Nitz	1:47.478Michael Nitz	99.5Michael Nitz	40.302Michael Nitz	38.742Michael Nitz	27.669Michael Nitz
Mysterian M2	FV	1	1:50.348Jacob Schilling	1:51.018Jacob Schilling	1:50.348Jacob Schilling	103.8Jacob Schilling	41.717Jacob Schilling	39.978Jacob Schilling	28.070Jacob Schilling
Protoform P3	FV	1	1:48.141Rich Richardson	1:52.689Rich Richardson	1:48.141Rich Richardson	98.5Rich Richardson	41.004Rich Richardson	38.798Rich Richardson	27.780Rich Richardson
Mysterian M3	FV	1	1:49.107Mark Richardson	1:50.256Mark Richardson	1:49.107Mark Richardson	100.3Mark Richardson	41.213Mark Richardson	39.424Mark Richardson	28.021Mark Richardson
Caracal D	FV	1	1:49.406Russell Fredericks	1:49.406Russell Fredericks	2:01.684Russell Fredericks	104.1Russell Fredericks	41.122Russell Fredericks	40.095Russell Fredericks	27.801Russell Fredericks
Lazer 1	FV	1	1:49.498Rich Richardson	1:50.080Rich Richardson	1:49.498Rich Richardson	102.5Rich Richardson	41.168Rich Richardson	39.823Rich Richardson	28.069Rich Richardson
Volkswagen Crusader	FV	1	1:51.060William Duke Ragsdale	2:01.913William Duke Ragsdale	1:51.060William Duke Ragsdale	96.6William Duke Ragsdale	40.655William Duke Ragsdale	39.992William Duke Ragsdale	28.658William Duke Ragsdale
Caracel C	FV	1	1:51.291John Mcaleer	1:52.321John Mcaleer	1:51.291John Mcaleer	104.6John Mcaleer	41.585John Mcaleer	40.766John Mcaleer	27.961John Mcaleer
JK Technologies XP-1	FV	1	1:52.465Jonathan Weisheit	1:52.465Jonathan Weisheit	1:56.826Jonathan Weisheit	102.5Jonathan Weisheit	41.732Jonathan Weisheit	41.272Jonathan Weisheit	28.068Jonathan Weisheit
Citation CW1	FV	1	1:52.837Barry Shelton	1:53.780Barry Shelton	1:52.837Barry Shelton	100.4Barry Shelton	42.282Barry Shelton	41.029Barry Shelton	28.851Barry Shelton
Fiat 124 Spider	FP	1	2:08.730Douglas Sanders		2:08.730Douglas Sanders	91.2Douglas Sanders	50.604Douglas Sanders	42.988Douglas Sanders	34.387Douglas Sanders

About this data

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Super Tour Mar 2023 → Super Tour Mar 2024 2023-03-10 to 2024-03-08

2023-04-01 P2 Remove redundant effective date language and update engine table

#34012 from Club Racing Board · Rule change · TB 23-04 (2023-04 Fastrack)

wordingP2 engine table spec line B.1 redundant effective date language removed and table updated.

As printed in Fastrack

In P2 Engine Table, Spec Line B.1, change as follows:

2023-04-01 P2 E&O - Correct dimensional equivalents

#34038 from Club Racing Board · Rule change · TB 23-04 (2023-04 Fastrack)

faster · engineP2 motorcycle restrictor reduced 35mm to 34mm for 2011+ Kawasaki; minimum weights increased to 1100 lbs for 2009+ engines; cockpit length corrected to 23.622 inches.

As printed in Fastrack

In P2, GCR section 9.1.8.C.D.2, change as follows:
"Height: No part of the vehicle having special or significant aerodynamic function shall exceed a height of 115cm (45.275 inches)
above the ground with the car in normal racing trim, driver aboard."
In P2, GCR section 9.1.8.C.D.3, change as follows:
"However, no portion shall extend more than 10cm (3.937 inches) beyond a plane tangent to the outer face of the front and rear
wheels with tires."
P2 Engine Table
Spec
Line Engine Series

A specification table follows in the original; it is not shown here.

2023-05-01 FP Classification Request for 1978 Toyota Celica

#34097 from Bob Pharr · Rule change · TB 23-05 (2023-05 Fastrack)

addedToyota Celica 78-80 classified FP Prep level 2, 2100–2205 lbs, 2190 cc SOHC four-cylinder, stock carburetion, 11.0:1 compression limit, .450" valve lift limit.

As printed in Fastrack

In FP Spec Lines, classify Toyota Celica (78-80) as follows:

A specification table follows in the original; it is not shown here.

2023-05-01 SRF Update SRF Front W2 Rain Tire Part Number

#34118 from Robey Clark · Rule change · TB 23-05 (2023-05 Fastrack)

tyres & wheelsSRF front W2 rain tyre Hoosier part number changes from 46100 to 46101 P185/65R13.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Front – Hoosier P/N 46100 1 P185/65R13 W2"

2023-05-01 P2 Clarify minimum side body height requirement

#34143 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

wordingP2 minimum side body height must equal front axle centerline height, viewed from side.

As printed in Fastrack

In P2, GCR section 9.1.8.C.D.6, change as follows:
"As viewed from the side, T the outermost surface of ~~side pods~~ body between the front and rear wheel openings and above the
floor must have a minimum height equal to the height of the front axle centerline."

2023-05-01 P2 Clarify closed cockpit single seat car allowance

#34144 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

wordingP2 closed cockpit single seat cars now prohibited unless Table 1 spec line permits.

As printed in Fastrack

In P2, GCR section 9.1.8.C.C, add a section as follows:
"4. Closed cockpit single seat cars are not permitted unless specifically allowed by a spec line in Table 1."

2023-06-01 SRF Hoosier SRF Wet Front Tire Rule Update

#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 Fastrack)

tyres & wheelsSRF wet front tyre changes to Hoosier P/N 46100 P185/60R13 H20 or W2 with 2.5" ground clearance.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
Front – Hoosier P/N 46100 P185/60R13 H20 or W2
Rear – Hoosier P/N 46105 P205/60R13 H20 or W2
Ground clearance is 2.5" with driver as raced when P185/60R13 (H20 or W2) tires are used."

2023-06-01 FP Request to Classify Sonic and Fiesta in HP

#34264 from Greg Amy · Rule change · TB 23-06 (2023-05 Fastrack)

addedFord Fiesta HP model years change to 11-19; Chevrolet Sonic FP model years change to 12-19.

As printed in Fastrack

In HP, adjust model years of the "Ford Fiesta (11-16)" spec line as follows:
"Ford Fiesta (11-16 9)"
In FP, adjust model years of the "Chevrolet Sonic (12-16)" spec line as follows:
"Chevrolet Sonic (12-16 9)"

2023-07-01 FP ITC to FP?

#34286 from David Snow · Rule change · TB 23-06 (2023-07 Fastrack)

removed · cars addedHP Volkswagen Rabbit Cabriolet 1780 removed; Rabbit 1588 and 1715 reclassified with year and body-type clarifications.

As printed in Fastrack

In HP Spec Lines, Volkswagen Rabbit Cabriolet 1780, delete in its entirely:
In HP, Spec Lines, Volkswagen Rabbit, change Title as follows:
“Volkswagen Rabbit 1588 ~~(includes Cabriolet / convertible)~~”
“Volkswagen Rabbit 1715 ~~(81-84) (excl. conv.)~~”
“Volkswagen Rabbit ~~GTI~~ 1780 ~~(83-84)~~”

2023-07-01 FP Correct Intake Valve Size on 1500cc Midget/Spitfire

#34419 from Production Committee · Rule change · TB 23-06 (2023-05 Fastrack)

wordingFP and HP Sprite and Spitfire 1500 intake valve size corrected to 36.6 mm, removing prior decimal specifications.

As printed in Fastrack

In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.3~~/(1.44)"
In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"

2023-10-01 SRF SRF Radiator Rule Update

#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

addedSRF radiator options expanded: Enterprises P/N 480465 with baffle 480464, 480466, or Automotive 1R698 and CU698 allowed if cross-reference equivalent.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.V.j, change as follows:
"Radiator - Enterprises new style P/N 480465 (requires baffle P/N 480464) or P/N 480466 can be used. P/N 480466~~, may~~ can be
replaced with Automotive P/N 1R698, CU698 or ~~equivalent OEM~~ manufacturer j~~ustified by one~~ cross-reference ~~chart~~ equivalent,
as long as the size, shape, and material are the same as the original P/N. ~~The capacity, core thickness, etc., cannot be changed~~
~~even if allowed under the above.~~ The competitor is responsible for providing ~~this~~ documentation of the cross-reference P/N."

2023-12-01 FP Porsche 944/924S Rule Change Request

#35002 from Adam Achepohl · Rule change · TB 23-12 (2023-12 Fastrack)

slower · weightEP Porsche 944/924S combines 2.5L and 2.7L variants (83-89), raises weight to 2250–2415 lbs, allows 2681cc displacement.

As printed in Fastrack

In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche
944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:

A specification table follows in the original; it is not shown here.

2023-12-01 FP FP and HP Toyota Corolla

#35030 from Keith Church · Rule change · TB 23-12 (2023-12 Fastrack)

faster · weightFP Toyota Corolla 2TC loses 43 lbs to 1810; HP Corolla loses 50–52 lbs to 1910–2006.

As printed in Fastrack

In FP Spec Lines, Toyota Corolla 2TC (71-74), change weight as follows:
"~~1853~~ 1810"
In HP Spec Lines, Toyota Corolla (71-74), change weight as follows:
“~~1960~~ 1910
* ~~2009~~ 1958
** ~~2058~~ 2006”

2023-12-01 FP Triumph GT6 Adjustments

#35054 from ANTHONY PARKER · Rule change · TB 23-12 (2023-12 Fastrack)

faster · weightEP Triumph GT6 minimum weight drops to 1800 lbs.

As printed in Fastrack

In EP Spec Lines, Triumph GT6, change weight as follows:
"~~1830~~ 1800"

2023-12-01 FV FV Wheel Bearing Clarification

#35150 from Formula/Sports Racing Committee · Rule change · TB 23-12 (2023-12 Fastrack)

wordingFV front wheel bearings wording clarified; specification unchanged.

As printed in Fastrack

In FV, GCR section 9.1.1.C.10.G, change as follows:
"Front W wheel bearings"

2023-12-01 P2 Correct Table 1 for Engine Date Range Specifications

#35182 from Formula/Sports Racing Committee · Rule change · TB 23-12 (2023-09 Fastrack)

wordingP2 Table 1 engine date ranges clarified: Stock Engine replaced with specific marques Suzuki, Yamaha, Honda, BMW for 2009-newer and 2008-older rows.

As printed in Fastrack

In P2 Table 1, change as follows:
P2 Table 1 (Spec Line Cars)

A specification table follows in the original; it is not shown here.

2024-01-01 SRF Update SRF Rain / Brake Rule

#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

otherSRF rain/brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24; secondary filament must connect to rain light switch.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.W.l, change as follows:
"A Super Bright LEDs Inc. rain / brake light ~~comprised of a single standard trailer oval lamp, 2-1/4 inches x 6-1/2 inches, with~~
~~incandescent or LED illumination~~, P/N PT-STRB-R24, is required in the original roll hoop mounting location. This rule supersedes
GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No changes may be made to the original 3-pin connector on the
wiring harness. The secondary filament of the brake light assembly ~~shall~~ must be connected to a switch enabling its use as a rain
light."

2024-01-01 SRF Update SRF Brake Light Rule v1

#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 Fastrack)

otherSRF brake light must be Super Bright LEDs Inc. P/N PT-STRB-R24, with SCCA Enterprises P/N 180427A pigtail and strobing rain light kit.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.W.l, change as follows:
"A Super Bright LEDs Inc. P/N PT-STRB-R24 (SCCA Enterprises P/N 180427A) rain / brake light, ~~P/N PT-STRB-R24~~, is required in the
original roll hoop mounting location. This rule supersedes GCR section 9.3.32.B.2 effective 1/1/2024 through 12/31/2024. No
changes may be made to the original 3-pin connector on the wiring harness. An SCCA Enterprises P/N 1190503 Strobing Brake
Light Pigtail is required. The secondary filament of the brake light assembly must be connected to a switch enabling its use as
a strobing rain light. A Strobing Brake Light Kit P/N 1168003 is available, which includes the brake light and pigtail."

2024-01-01 FP FP data

#35060 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

In FP Spec Line, Acura Integra LS (94-01), change weight as follows:
"~~2235~~ 2260
*~~2291~~ 2317
**~~2347~~ 2373"
In FP Spec Line, Honda Del Sol VTEC (94-97), change weight as follows:
"~~2190~~ 2265
*~~2245~~ 2322
**~~2300~~ 2378"

Applies to Acura Integra on this page: Ken Kannard, Les Chaney

Applies to Honda Civic Del Sol VTEC on this page: Cliff Ira

2024-01-01 FP Request to Review Z3 2.5 Spec Line

#35073 from Tim Schreyer · Rule change · TB 24-01 (2024-01 Fastrack)

slower · weightEP BMW Z3 2.5L minimum weight increased to 2500 lbs, 2563 lbs with power adder, 2625 lbs with two power adders.

As printed in Fastrack

In EP spec line, BMW Z3 2.5L, change weight as follows:
"~~2450~~ 2500
*~~2511~~ 2563
**~~2573~~ 2625"

2024-01-01 P2 E&O - Clarify B.1 modified engine range in AMAC spec lines

#35225 from Club Racing Board · Rule change · TB 24-01 (2024-01 Fastrack)

wordingP2 AMAC and related cars: clarified B.1 modified engine range to 2008 and older stock engines only, with 38mm restrictor and 1025 lbs minimum weight.

As printed in Fastrack

In P2 Table 1, change as follows:
P2 Table 1 (Spec Line Cars)

A specification table follows in the original; it is not shown here.

2024-01-01 FP Corrections to Honda Spec Lines in FP

#35250 from Jonathan Spiegel · Rule change · TB 24-01 (2024-01 Fastrack)

unclearFP Honda throttle body inside diameters corrected across seven models: Civic 1.5 to 42", Civic Si to 55", CRX 1.5 to 42", CRX 84-87 to 33/42", CRX Si 88-91 to 55".

As printed in Fastrack

In FP Spec Lines, change Fuel Injected Equipped Throttle Body Inside Diameter as follows:
Acura Integra GSR (92-93): "58"
Honda Civic 1.5 (88-91): "NA 42"
Honda Civic EX (90-91): "55"
Honda Civic Si (88-91): “42 55”
Honda CRX 1.5 (88-91): “~~33 (primary) 42 (secondary)~~ 42”
Honda CRX / CRX Si (84-87): ”42 33 (primary) 42 (secondary)”
Honda CRX Si (88-91): ”NA 55”

2024-01-01 FP Miata Alternate Head

#35253 from Don Tucker · Rule change · TB 24-01 (2024-01 Fastrack)

faster · weightEP Mazda MX-5 1.8L (90-97) minimum weight cut to 2150 lbs; (94-97) variants to 2000, 2050, 2100 lbs.

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 /Miata 1.8L (90-97), change weight as follows:
"~~2200~~ 2150"
Mazda MX-5 /Miata (94-97)
"~~2035~~ 2000
*~~2086~~ 2050
**~~2137~~ 2100"

2024-01-01 FP Triumph GT6 Adjustments

#35255 from Anthony Parker · Rule change · TB 24-01 (2024-01 Fastrack)

slower · weightEP Triumph GT6 dual 1.75-inch carburetors weight rises to 1940 lbs; triple Weber 40 DCOE option added at 1990 lbs.

As printed in Fastrack

In EP spec line, Triumph GT6, make the following change in the Notes section:
"Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. ~~Three (3) Weber 40mm DCOE w/28mm venturi on individual~~
~~runner manifold @ 2020 lb.~~"

2024-01-01 SRF SRF / SRF3 Rule Updates

#35268 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

suspension & brakesSRF adds mandatory front brake ducts 12–36 inches, throttle pedal heel-toe extension, braided stainless flex lines, camber limit 5.0 degrees, radiator opening height 3½ ± ½ inches, rear shift cable clamp P/N WM302007A.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.H, add the following:
"NO MODIFICATIONS ALLOWED. Front brake ducts are required, attached to the openings in the lower radiator baffles, any
flexible 4" duct material allowed, installed length minimum 12" maximum 36" in length. Must be securely fastened, Bracket ~~Part~~
# P/N 800368 can be used. ~~Shall~~ Must serve no other purpose. An extension may be welded to the side of the throttle pedal to
improve heel-and-toe braking. Master cylinder casting / location must be used as delivered on P/N 180110 Pedal Mounting
support. Aeroquip style -3 braided stainless flex lines only, must attach to all brake components without modification. Brake pad
"anti-rattle" clips must be removed."
In SRF, GCR section 9.1.8.D.1.V, add the following:
"ii. Rear SADEV shift cable aluminum two-piece style clamp may be used. The P/N WM302007A clamp must serve no other
purpose."
In SRF, GCR section 9.1.8.D.1.X.k, add the following:
"Negative camber ~~shall~~ must not exceed 5.0 degrees absolute maximum front and rear."
In SRF, GCR section 9.1.8.D.1.AA.b, add the following:
"2. Height of the radiator opening vertical surface 3 1/2“ +/- 1/2"."
P2 Engine Table B.1
2008 and older Stock
Suzuki, Yamaha,
Honda, BMW
38.5mm
P2 Engine Table B.2 Not required
P2 Engine Table B.3 38.5mm
Modified
Engine
950 lbs.
1005cc max
P2 Engine Table B.1
2008 and older 37mm
P2 Engine Table B.2 Not required
P2 Engine Table B.3 39mm
Stock Engine
1050 lbs.

2024-01-01 FP Honda S2000 throttle body

#35272 from Aaron Johnson · Rule change · TB 24-01 (2024-01 Fastrack)

faster · inductionEP Honda S2000 fuel injected throttle body inside diameter increases from 62mm to 64mm.

As printed in Fastrack

In EP spec line, Honda S2000, make the following changes to its spec line:
Fuel Injected Equipped Throttle Body Inside Diameter: "62 64"
Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body
from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the
"Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."

2024-01-01 FP Correction within Triumph TR8 Spec Line

#35315 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

wordingEP Triumph TR8 dry sump allowance moved from Carburetor line to Notes.

As printed in Fastrack

In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows:
Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. ~~Dry sump is allowed.~~”
Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”

2024-01-01 FP Correction to EP 924S/944 Spec Line

#35317 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

weightEP Porsche 944/924S 2.5L and 2.7L minimum weights corrected: 2479cc to 2306–2363 lbs, 2681cc to 2358–2415 lbs.

As printed in Fastrack

In EP spec line, Porsche 944/924S 2.5L (2V) / 2.7L (2V) (83-89), change Weight as follows:

A specification table follows in the original; it is not shown here.

2024-01-01 P2 Replacement Engine Crankcase for 07/08 Suzuki GSX-R1000 Engines

#35340 from Michael A Reupert · Rule change · TB 24-01 (2024-01 Fastrack)

added · engineP2 Suzuki GSX-R1000 engine: 2007–2008 crankcase 11300-21860 may be replaced with 2016–2019 GSX-S1000 part 11301-04840.

As printed in Fastrack

In P2 Engine Table, Spec Line B.1, add to notes as follows:
"No modifications allowed on engines manufactured after 2008 model year. 2007-2008 Suzuki GSX-R1000 crankcase part
#11300-21860 may be replaced with 2016-2019 Suzuki GSX-S1000 crankcase part #11301-04840."

2024-02-01 FP Update 1988-1991 Civic to Match 1988-1991 CRX

#35399 from Enrik Benazic · Rule change · TB 24-02 (2024-01 Fastrack)

faster · weightHP Honda Civic 1.5 1988-91 minimum weight drops 70 lbs to 2175; also 2-speed and 3-speed minimums cut 72 and 73 lbs.

As printed in Fastrack

In HP, make the following weight change:
Honda Civic 1.5 (88-91)
~~“2245~~ 2175
*~~2301~~ 2229
**~~2357~~ 2284”

2024-03-01 FP GCR Correction - Redundant HP Spec Lines

#35623 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

removedHP removes four redundant VW spec lines: Rabbit Cabriolet 1780, Scirocco 1588, Scirocco 1780 8-valve 83-88, Scirocco 1588.

As printed in Fastrack

In HP Spec Lines, delete the following redundant spec lines in their entirety:
Spec line #10 - VW Rabbit Cabriolet 1780
Spec line #3 - VW Scirocco 1588
Spec line #4 - VW Scirocco 1780 (8-valve) (83-88)
Spec line #5 - VW Scirocco 1588

2024-03-01 FP Update FP Protege (01-03) Model Info

#35715 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

wordingFP Mazda Protégé ES (01-03) renamed to Mazda Protégé ES/5 (01-03).

As printed in Fastrack

In FP Spec Lines, Mazda Protégé ES (01-03) change vehicle as follows:
"Mazda Protégé ES/5 (01-03)"

Super Tour Mar 2024 → Super Tour Mar 2025 2024-03-08 to 2025-03-07

2024-05-01 P2 CN Spec ECU

#35835 from Bart Wolf · Rule change · TB 24-05 (2024-05 Fastrack)

wordingP2 Spec Line E engine notes clarify oil system, ECU, and exhaust remain unrestricted; wording only.

As printed in Fastrack

In P2 Engine Table, Spec Line E, change the notes as follows:
"No engine modifications except f~~or dry sump oil system, ECU mapping, and exhaust system~~ the following: oil system, ECU, and
exhaust are unrestricted."

2024-05-01 FP Request to Replace CRX Plastic Panels

#35876 from Darryl Saylor · Rule change · TB 24-05 (2024-05 Fastrack)

addedFP Honda CRX 84-87 plastic front header nose panel, rocker skirts, door caps can now be replica alternate material stock appearance.

As printed in Fastrack

In FP spec line "Honda CRX / CRX Si (84-87)", add the following wording to the Notes section:
"The plastic OE front header/nose body panel, lower rocker side-skirt, and lower door cap panel can be replaced by a
replica, which may be constructed of an alternate material, provided its appearance remains stock."

2024-05-01 FP FP data and parity

#35896 from Production Committee · Rule change · TB 24-05 (2024-05 Fastrack)

added · inductionFP Acura Integra 90-01 and Honda Civic Del Sol VTEC, Civic Si 99-00 require 55mm flat plate intake restrictor.

As printed in Fastrack

In the following FP spec lines, add the following wording to the Notes section:
Acura Integra (90-93)
Acura Integra LS (94-01)
Acura Integra GSR (92-93)
Honda Civic Del Sol VTEC (94-97)
Honda Civic Si (99-00)
"55mm Flat Plate Intake Restrictor is required."

2024-05-01 P2 E&O - Correct FIA Group CN spec line notes

#35900 from Club Racing Board · Rule change · TB 24-05 (2024-05 Fastrack)

wordingP2 FIA Group CN notes clarify V de V European Proto Endurance Challenge bodywork, rear diffuser, wing, wheels, assisted shifting allowed; regulations link provided.

As printed in Fastrack

In P2 Table 1, FIA Group CN spec line, change the notes as follows:
"FIA Group CN homologated chassis, brake calipers and discs, hub carriers, and suspension components are required. V de
V European Proto Endurance ~~Series~~ Challenge permitted bodywork, rear diffuser, wing, wheels, and assisted
shifting are allowed. Car M must comply with all other P2 requirements. ~~Competitors must have copies of~~ FIA Group CN
Technical Regulations and V de V European Proto Endurance ~~Series~~ Challenge Sporting and Technical Regulations ~~in their~~
~~possession and present them upon request~~ are available here: https://www.scca.com/pages/technical-forms-and-downloads."

2024-06-01 FP NIssan 300ZX Z31 to EP

#35830 from Murphy Nichols · Rule change · TB 24-06 (2024-06 Fastrack)

addedNissan 300ZX 84–89 added to EP, 2550–2678 lbs, 2960 cc SOHC, fuel injection, 12.0:1 compression, 0.500" valve lift limit.

As printed in Fastrack

In EP Spec Lines, classify Nissan 300ZX (84-89), as follows:

A specification table follows in the original; it is not shown here.

2024-06-01 FP RX7 1993 and Up Request In EP Spec Lines, classify

#36031 from Edward Zabinski · Rule change · TB 24-06 (2024-06 Fastrack)

addedMazda RX-7 92-97 added to EP Prep as Level 2 rotary 13B 6-port, 2200–2310 lbs, carb or fuel injection, 42 mm choke.

As printed in Fastrack

Mazda RX-7 (92-97) as follows:

A specification table follows in the original; it is not shown here.

2024-06-01 FP Clean-up Multiple EP RX-8 Spec Lines In EP

#36156 from Production Committee · Rule change · TB 24-06 (2024-06 Fastrack)

removed · cars addedEP Mazda RX-8 (04-11) alternate spec line removed; single spec line retained.

As printed in Fastrack

Spec Lines, make the following changes to the two Mazda RX-8 spec lines.
Remove spec line entirely:
~~Mazda RX-8 (04-11)~~
Remove the wording "alternate":
Mazda RX-8 (04-11)~~(alternate)~~
Spec Mazda (SM/SMX) None.

2024-08-01 FP Errant entry in HP production line item

#36231 from Angus Crome · Rule change · TB 24-08 (2024-08 Fastrack)

wordingHP Volkswagen Golf and Jetta 85-92 track correction: front 1537 mm (60.5 in.), rear 1529 mm (60.2 in.).

As printed in Fastrack

In HP Spec Lines, change Track (F/R)mm/(in.) as follows:
Volkswagen Golf (GTI, GT, GL) (85-92): "2 1537/1529 (60.5/60.2)"
Volkswagen Jetta (GLI, GL) (85-92): "2 1537/1529 (60.5/60.2)"

2024-08-01 SRF Update Rain Tire Rule and Hoosier Decal Placement

#36436 from Robey Clark · Rule change · TB 24-08 (2024-08 Fastrack)

tyres & wheelsSRF wet tyres: front P185/60R13 H20 or W2 and rear P205/60R13 H20 or W2 removed; front P185/65R13 W2 and rear P205/60R13 W2 now required. Hoosier decal placement specified.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Wet:
~~Front – Hoosier P/N 46100 P185/60R13 H20 or W2~~
~~Rear – Hoosier P/N 46105 P205/60R13 H20 or W2~~
~~Ground clearance is 2.5” with driver as raced when P185/60R13 (H20 or W2) tires are used.~~
OR
Front – Hoosier P/N 46101 P185/65R13 W2
Rear – Hoosier P/N 46105 P205/60R13 W2
1. It is forbidden to regroove tires.
2. The use of tire warmers or cooling methods other than natural air convection or conduction is prohibited. The penalty for
violation will be the loss of qualifying times and/or the disqualification of race results.
3. Hoosier SRF/SRF3 Decal Placement:
Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose to
the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the
rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including
SCCA Enterprises."

2024-09-01 SRF Protest Fee Clarification

#36540 from SCCA Staff · Rule change · TB 24-09 (2024-09 Fastrack)

wordingFE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.U.b.3, change as follows:
"Protest Fee: ~~Regional -$25.00, National -$50.00.~~ See GCR section 8.3.1.D for fees and payment procedure."
In SRF, GCR section 9.1.8.D.1.U.b.3, change as follows:
"Protest Fee: ~~Regional -$25.00, National -$50.00.~~ See GCR section 8.3.1.D for fees and payment procedure. Item 1 will be done by
the CSR or other shop that is equipped for this type of work and will be paid directly."

2024-09-01 SRF Update to Letter 36619 with new Hoosier Contingency Decal Info

#36624 from Robey Clark · Rule change · TB 24-09 (2024-09 Fastrack)

wordingSRF Hoosier contingency decal requirement reduced from four decals in specific locations to three decals with simplified placement.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.f.3, change as follows:
"~~Four (4) "Hoosier" decals are required in the following locations: Two (2) 11" X 3" decals on the vertical plane of the front nose~~
~~to the outside of the cooling opening on each side and two (2) 18" X 5" decals, one on each side of the engine cover or above the~~
~~rear wheel openings on the vertical plane. Hoosier decals are available, free of charge, from all Hoosier tire distributors including~~
~~SCCA Enterprises~~ Per Hoosier's contingency program, three (3) decals are required to qualify for contingency awards. One (1)
decal must be located on each side of the car and one (1) decal must be visible on the front."

2024-10-01 SRF Update SRF3 Air Filter Rule

#36681 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

removedSRF3 air filter rule removes K&N RC-9160 option, specifies Weems P/N WM301020 only.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 ~~or K&N RC-9160~~"

2024-10-01 SRF Update SRF Brake Rotor Thickness

#36687 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

suspension & brakesSRF Wilwood vented rotor minimum thickness increases to 13.25mm, 0.522 inches.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.X.g, change as follows:
"Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 ~~shall~~ must be used as delivered with
no machining of any kind. Minimum thickness ~~12.20mm (0.481”)~~ 13.25mm (0.522”)."

2024-10-01 FP Errors/emissions Honda Civic/CRX

#36700 from Martin Burk · Rule change · TB 24-10 (2024-10 Fastrack)

faster · engineFP Honda CRX/CRX Si 84-87 block material changes from iron to aluminium.

As printed in Fastrack

In FP Spec Lines, Honda CRX / CRX Si (84-87), change Block Mat'l as follows:
"~~Iron~~ Alum"

2024-10-01 SRF Hoosier Tire Decal Placement

#36739 from Robey Clark · Rule change · TB 24-10 (2024-10 Fastrack)

wordingSRF3 Hoosier decal placement changed from four logos on nose and tail to three logos on sides and center front.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.B, change as follows:
"Mandatory identification: "SRF3" near the side car numbers. "~~Hoosier" logo (4) on both sides front lower outer corners of the~~
~~nose and each side of the tail.~~ Three (3) "Hoosier" logos, one (1) on each side of the car and one (1) on the center front of the car."

2024-10-01 FV Disc Brakes

#36822 from Guy Bellingham · Rule change · TB 24-10 (2024-10 Fastrack)

wordingFV ferrous rotor must not be cross-drilled; pad cleaning grooves limit unchanged at three per side.

As printed in Fastrack

In FV, GCR section 9.1.1.C.4.D, change as follows:
"Any ferrous alloy, unvented rotor may be used, but must have a maximum diameter of 11.75 in. and a minimum thickness of
0.20 in. The ~~otherwise smooth~~ rotor may not be cross-drilled and may have a maximum of three pad cleaning grooves per side."

2024-11-01 FP 1275 HP Spridget Level 2 Only

#36518 from Darryl Saylor · Rule change · TB 24-09 (2024-09 Fastrack)

faster · engineHP 1275 Spridget compression ratio raised to 12.0:1; 1098cc also raised to 12.0:1.

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"

2024-12-01 P2 2000 cc Pinto Engine Car Weight

#37187 from Marvin Hodges · Rule change · TB 24-12 (2024-12 Fastrack)

slower · weightP2 2000 cc Pinto engine car minimum weight set to 1335 lbs.

As printed in Fastrack

In P2 Engine Table, Line E Note 2, add the following:
"8. Minimum weight 1335 lbs."

2025-01-01 FP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line

#37119 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

faster · weightEP BMW 325i/is E30 84-91 weight reduced to 2150 lbs base, 2204 lbs with turbo, 2258 lbs supercharged.

As printed in Fastrack

In EP SPEC LINES, BMW 325i/is (E30) (84-91), change Weight as follows:
"~~2200~~ 2150
*~~2255~~ 2204
**~~2310~~ 2258"

2025-01-01 FP Fix Error in Spridget Spec Line

#37437 from Jason Stine · Rule change · TB 25-01 (2025-01 Fastrack)

wordingFP Sprite and Midget 1275cc and 1500cc bore, stroke, displacement, and valve specifications corrected to factory dimensions.

As printed in Fastrack

In FP SPEC LINES, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change the following:
1275cc:
Bore x Stroke: "~~68.1x78.4 (2.68x3.09)~~ 70.6x81.3 (2.78x3.20)"
Displacement: "~~(77.78)~~ 1275"
Valves IN & EX: ~~"(I) 32.1/(1.26) (E) 28.4/(1.12)~~ (I) 33.3/(1.31) (E) 29.5/(1.16)"
1500cc:
Bore x Stroke: "~~1.1x84.3~~ 73.7x87.4 (2.90x3.44)"
Displacement: "~~1491 (90.95)~~ 1493"
Valves IN & EX: "(I) 36.6/(1.44) (E) ~~28.7~~ 29.7/(1.17)"

2025-01-01 FP Create ruleset that allows GTL cars to run in FP

#37485 from Club Racing Board · Rule change · TB 25-01 (2025-01 Fastrack)

addedF Production now permits GT-Lite cars meeting Appendix N specs to compete, governed by Appendix N not PCS 9.1.5.

As printed in Fastrack

“~~(Effective January 1, 2026)~~ (Effective January 1, 2025)." Any GT-Lite (GTL) car meeting all of the requirements of Appendix N
GT-LITE CATEGORY SPECIFICATIONS for inclusion into F PRODUCTION" may compete in the F-Production class. For GTL cars
competing in FP, the level of preparation and modifications will be determined by Appendix N and not by PCS 9.1.5.”

2025-02-21 FP Effective date for Jan 2025 GCR updates

#37654 from Doug Piner · Rule change · TB 25-02 (2025-02 Fastrack)

slower · inductionEP BMW models now require flat plate intake restrictors: Z3 2.5L 52mm, Z3 2.8L 55mm, 328i E36 58mm, 328i/ci E46 58mm, 325i E46 56mm, 325i E36 56mm, 325is M-Technic 56mm.

As printed in Fastrack

In EP Spec Lines, add to Notes as follows:
BMW Z3 2.5LL "(Effective 2/21/2025) 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 2/21/2025) 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Request Competition Adjustment to BMW Z3 2.5L

#37120 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

slower · inductionEP BMW Z3 2.5L, Z3 2.8L, 328i E36/E46, 325i E36/E46 intake restrictors reduced 4mm each, to 52–58mm.

As printed in Fastrack

In EP Spec Lines, change Notes as follows:
BMW Z3 2.5LL "(Effective 3/1/2025) ~~56mm~~ 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 3/1/2025) ~~59mm~~ 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Interpretation of Production Rules on Mirrors

#37235 from Lawrence Slivinski · Rule change · TB 25-03 (2025-03 Fastrack)

addedEP, FP, HP may use any interior or exterior mirror meeting rule 9.3.36.

As printed in Fastrack

In GCR, add new rule as Section 9.1.5.E.10.f:
"Any interior or exterior mirror(s) that meets rule 9.3.36 may be used."

2025-03-01 FP FP Class Adjustments

#37458 from Production Committee · Rule change · TB 25-01 (2025-01 Fastrack)

slower · inductionFP Acura Integra and Honda Civic models restricted from 55mm to 51mm intake; Del Sol VTEC weight raised to 2290, 2347, 2405 lbs.

As printed in Fastrack

In FP SPEC LINES, change Notes as follows:
Acura Integra (90-93): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Acura Integra LS (94-01): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Acura Integra GSR (92-93): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."
Honda Civic Si (99-00): "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required.
In FP SPEC LINES, change as follows:
Honda Civic Del Sol VTEC (94-97): "
Weight: "(Effective 3/1/2025) ~~2265 *2322 **2378~~ 2290 *2347 **2405
Notes: "(Effective 3/1/2025) ~~55mm~~ 51mm Flat Plate Intake Restrictor is required."

2025-03-01 FP Weight Reduction for Honda S2000

#37466 from Michael Unger · Rule change · TB 25-03 (2025-03 Fastrack)

faster · weightEP Honda S2000 1997cc minimum weight drops 75 lbs to 2375; 2157cc drops 60 lbs to 2450.

As printed in Fastrack

In EP, Spec Lines make the following weight changes:

A specification table follows in the original; it is not shown here.

2025-03-01 FP Mazda 1999 Miata 1.8L

#37488 from Joe Carr · Rule change · TB 25-03 (2025-03 Fastrack)

faster · weightEP Mazda MX-5 Miata 99-05 minimum weight reduced to 2100 lbs, 2153 lbs with power, 2205 lbs modified.

As printed in Fastrack

In EP Spec Lines, make the following weight change:
Mazda MX-5 /Miata (99-05):
"~~2150~~ 2100
*~~2204~~ 2153
**~~2258~~ 2205"

2025-03-01 FP Errors & Omissions

#37648 from Bryan Floyd · Rule change · TB 25-03 (2025-03 Fastrack)

addedFP Volkswagen Jetta Mark IV 4dr FWD added to GTL-FP Cars classification with 98.2 in wheelbase.

As printed in Fastrack

In FP Spec Lines, Appendix N, GTL-FP Cars - Volkswagen, classify Jetta Mark - IV as follows:
GTL-FP Cars - VOLKSWAGEN
Model Years Body Style Drive-line Wheelbase (in) Notes
Jetta Mark - IV 4dr FWD 98.2

2025-03-01 FP GTL/FP consolidation 2025 Rules

#37659 from James Gregorius · Rule change · TB 25-03 (2025-03 Fastrack)

added · inductionFP adds optional induction chokes as alternative to SIR, same size as listed restrictor.

As printed in Fastrack

In FP Spec Lines, Appendix N: L.9, Fuel Injection System, add the following:
"As an option, induction system “Chokes” may be used where a SIR is required. Said chokes shall be fitted to each barrel of
carburetor/throttle body and all airflow into engine must pass through them. Choke size will be the same as listed SIR unless
noted."

Super Tour Mar 2025 → Super Tour Mar 2026 2025-03-07 to 2026-03-06

2025-04-01 FP Request for Classification of Chevrolet Spark

#37755 from Kristian Smith · Rule change · TB 25-04 (2025-04 Fastrack)

addedChevrolet Spark 16-22 classified in HP Pre at 1850 lbs base, 1896 lbs modified, 1943 lbs.

As printed in Fastrack

In HP Spec Lines, classify the Chevrolet Spark (16-22):

A specification table follows in the original; it is not shown here.

2025-04-01 FP Request to Lower Ford Festiva Minimum Weight to 1600 LBS

#37939 from Doug DeRonne · Rule change · TB 25-04 (2025-04 Fastrack)

faster · weightHP Ford Festiva 88-93 minimum weight lowered to 1600 lbs, competition weight to 1640, prepared weight to 1680; compression ratio raised to 11.0:1.

As printed in Fastrack

In HP Spec Lines "Ford Festiva (88-93)" change as follows:
Weight:
"~~1700~~ 1600
*~~1743~~ 1640
**~~1785~~ 1680"
Notes:
"Compression ratio limited to ~~10.5~~ 11.0:1. Valve lift limited to .450”."

2025-04-01 SRF Driver Safety & Comfort

#37966 from Robey Clark · Rule change · TB 25-04 (2025-04 Fastrack)

addedSRF drivers with disabilities may modify seat and controls for safety and comfort with SCCA approval, noted in logbook, for that driver only.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.D, add the following:
"f. Driver Safety and Comfort modifications to seat and controls for drivers with disabilities may be made only by approval. These
modifications must be reported to SCCA Enterprises and noted in the car logbook. The modifications are approved only for the
noted driver with disabilities. If the car is used by or sold to another driver, it must be returned to the previous standard
configuration."

2025-04-01 SRF Update SADEV transmission specs

#37992 from Club Racing Board · Rule change · TB 25-04 (2025-04 Fastrack)

wordingSRF SADEV-SRF3 6-speed sequential transmission: effective date clarified to 1 April 2025 onward.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.K, change as follows:
"OR
SADEV-SRF3 6-Speed Sequential ~~(beginning~~ from Oct. 4, 2021 onward):
1st 12-36 3.0000 : 1
2nd 15-31 2.0667 : 1
3rd 18-28 1.5556 : 1
4th 22-28 1.2727 : 1
5th 24-26 1.0833 : 1
6th 25-23 0.9200 : 1
Final Drive Ratio: 15-48 3.20"

2025-06-01 FP Base Weight Adjustment for H-Production X1/9 Spec Lines

#38255 from Matthew Brannon · Rule change · TB 25-06 (2025-06 Fastrack)

faster · weightHP Fiat X-1/9 and Bertone 1500 minimum weights reduced to 1740 lbs, 1784 lbs, 1827 lbs; 1300 models to 1600, 1640, 1680 lbs; additional 1300 and 1500 specs to 2010, 1900 lbs.

As printed in Fastrack

In HP Spec Lines, change Weight as follows:
Fiat X-1/9 & Bertone1500: “~~1790~~ 1740 *~~1835~~ 1784 **~~1880~~ 1827”
Fiat X-1/9 1300: “~~1650~~ 1600 *~~1691~~ 1640 **~~1733~~ 1680”
Fiat X-1/9 1300: “~~2060~~ 2010”
Fiat X-1/9 1500: “~~1950~~ 1900”

2025-07-01 FP BMW Z4 update

#38490 from Bryce McGuire · Rule change · TB 25-07 (2025-07 Fastrack)

slower · inductionEP BMW Z4 03-05 gains 52mm flat plate intake restrictor.

As printed in Fastrack

In EP Spec Lines, BMW Z4 (03-05), add to Notes the following:
“52mm Flat Plate Intake Restrictor.”

2025-07-01 FP EP Fiat 124 Spider Competition Adjustment Request

#38498 from John Baucom · Rule change · TB 25-07 (2025-07 Fastrack)

faster · weightEP Fiat 124 Spider Competition 1600 and 2000 minimum weight drops 50 lbs to 2000; carburetors now allow 36mm chokes instead of 34mm.

As printed in Fastrack

In EP Spec Lines, Fiat 124 Sport Spider 1600 & 124 Spider 2000, change as follows:
Weight: "~~2050~~ 2000"
Carburetor No. & Type: "(2) Weber 40 IDF-40IFI, (2) Solex C40P116, 34 36mm choke(s) req’d, (2) Weber 45DCOE w/ 34 36 mm
choke(s) on I.R. manifold or fuel injection."

2025-10-01 SRF Add HD Oil Cooler

#38979 from Robey Clark · Rule change · TB 25-10 (2025-10 Fastrack)

added · engineSRF3 adds HD Oil Cooler P/N G1148500 option alongside standard P/N G480503, no fan permitted.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.1.V.ff, change as follows:
"SRF3 Oil Cooler, P/N G480503 or HD Oil Cooler P/N G1148500 may be used as mounted per the GEN3 Assembly Manual. No fan
permitted for SRF. ~~HD Oil Cooler kit P/N G1148500 may be used as mounted per the GEN3 Conversion Manual.~~"

2025-10-01 FP HP Plymouth Arrow spec omission

#38995 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

addedHP Plymouth Arrow gains 4 or 5 speed transmission option specification.

As printed in Fastrack

In HP Spec Lines, Plymouth Arrow (76-80), add the following wording to Trans. Speeds(max):
"4 or 5"

2025-10-01 FP Add Wheel Diameter to Appendix G

#39008 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

wordingAppendix G.2.3 clarifies rim width and diameter are absolute maximums; wording corrected from 'is' to 'are'.

As printed in Fastrack

In Appendix G.2.3, change as follows:
"Rim width and diameter are is absolute maximums."

2025-10-01 FP Add TB ID tolerance to general Prod rules

#39009 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

addedEP, FP, HP throttle body inside dimensions and butterfly now allow +/-.25mm tolerance from stock.

As printed in Fastrack

In GCR, Section 9.1.5.E., change as follows:
9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain
stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished."
9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must
remain stock (tolerance of +/-.25mm)."

2025-11-01 FP Please Lower Weight of 280Z

#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)

faster · weightEP Nissan 280Z minimum weight lowered to 2400 lbs, 2460 lbs with *, 2520 lbs with **.

As printed in Fastrack

In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows:
"(Effective 11/1/2025) ~~2560~~ 2400
*~~2624~~ 2460
**~~2688~~ 2520"

2025-11-01 FP Miata Weight Adjustment Follow Up

#38949 from Don Tucker · Rule change · TB 25-10 (2025-10 Fastrack)

faster · weightEP Mazda MX-5 1.8L 90-97 minimum weight reduced to 2125 lbs.

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 / Miata 1.8L (90-97), Effective 11/1/2025 make the following weight change:
"~~2150~~ 2125"

2025-11-01 FP Weight Break for 1098 Midget / Sprite

#38970 from Kendall Jones · Rule change · TB 25-10 (2025-10 Fastrack)

faster · weightHP Spec Lines Austin-Healey Sprite/Midget 1098cc minimum weight drops to 1550 lbs.

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite/Midget 1098cc, Effective 11/1/2025make the following weight change:
"~~1630~~ 1550"

2025-11-01 FP HP Volvo 142 spec omission

#38994 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

slower · engineHP Volvo 142 P-1800 engine gains compression ratio limit 12.0:1 and valve lift limit .425 inch.

As printed in Fastrack

In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes:
"Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."

2025-11-01 FP HP Mini DOHC 1.6

#38996 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

slower · engineHP Mini DOHC 1.6 valve lift limit drops to .390" from .450".

As printed in Fastrack

In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following
changes to the Notes:
"Compression ratio limited to 11.0:1, Valve lift limited to ~~.450”~~.390"."

2025-11-01 FP 83-88 FP Scirocco Spec Line Creation

#38997 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

addedFP Scirocco 83–88 classified Prep Level 1: 1733–1803 lbs, 1715–1780 cc, iron block, aluminium head, carburetted or fuel injected.

As printed in Fastrack

In FP Spec Lines, classify Volkswagen Scirocco (83-88) as follows:

A specification table follows in the original; it is not shown here.

2025-11-01 FP Add to Rabbit description

#39019 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

wordingFP and HP Volkswagen Rabbit descriptions updated to clarify Cabriolet body style inclusion.

As printed in Fastrack

In FP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit (Includes ~~Convertible~~ Cabriolet)"
In HP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit 1588 (Includes Cabriolet)"
"Volkswagen Rabbit 1715 (Includes Cabriolet)"
"Volkswagen Rabbit 1780 (Includes Cabriolet)"

2025-11-01 FP Clean-up 9.1.5.E.7e

#39025 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

otherEP, FP, HP: rear drum-to-disc brake conversion clarified; rotors solid, diameter limited to largest front rotor permitted.

As printed in Fastrack

In GCR, Section 9.1.5.E.7., change as follows:
"e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. N~~ote that the “Brakes Std.” and “Brakes~~
~~Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear~~
~~disc brakes under this rule~~. When converting from rear drum brakes to rear disc brakes:
1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on
the vehicle’s spec line.
2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. ~~The standard and~~
~~alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock~~
~~from converting to rear disc brakes under this rule.~~
3. The “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes
as stock from converting to rear disc brakes under this rule."

2025-11-01 FP Add TB size to Ford Mustang (94-98) Spec Line

#39130 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

added · inductionEP Ford Mustang 94-98 fuel injected throttle body inside diameter set to 60.

As printed in Fastrack

In EP Spec Lines, Ford Mustang (94-98) add the following to the Fuel Injected Equipped Throttle Body Inside Diameter column:
"60"

2025-11-01 FP Correct Existing VW Scirocco Spec Line

#39140 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

removed · cars addedFP Volkswagen Scirocco: remove two weight tiers at 1733 and 1803 lbs, two engine options, and 13-inch wheel option; allow 15-inch wheels.

As printed in Fastrack

In FP Spec Lines, Volkswagen Scirocco, change spec line as follows:

A specification table follows in the original; it is not shown here.

2025-12-01 FP TR2 Notes E&O

#39180 from Anthony Parker · Rule change · TB 25-12 (2025-12 Fastrack)

wordingEP Triumph TR2–TR4A may use 5-speed gearbox without overdrive; Weber carburetors and weight reference deleted.

As printed in Fastrack

In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes:
"Front apron assembly may be made of alternate material. ~~Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990~~
~~lbs.~~ Laycock overdrive, may use 5 speed gearbox without overdrive."

2025-12-01 FP Balance of Power

#39187 from Jim Simaras · Rule change · TB 25-12 (2025-12 Fastrack)

slower · inductionEP BMW Z3 2.5L and other models get smaller restrictors, 50mm to 55mm, and Z3 2.5L weight rises 50 to 78 lbs.

As printed in Fastrack

In EP Spec Lines, make the following changes to Restrictors:
BMW Z3 2.5L: "~~52mm~~ 50mm Flat Plate Intake Restrictor"
BMW Z3 2.8L (97-00): "~~55mm~~ 53mm Flat Plate Intake Restrictor"
BMW 328i/is E36 (96-99): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 328i/ci E46 (01-06): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 325i/is (E46) (01-06): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325is M-Technic (1994): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325i/is E-36 (92-95): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
In EP Spec Lines, BMW Z3 2.5L, change Weight as follows:
"~~2500~~ 2550
*~~2563~~ 2614
**~~2625~~ 2678"

2025-12-01 FP Competition Adjustment Request

#39259 from David Strittmatter · Rule change · TB 25-12 (2025-12 Fastrack)

faster · weightFP Lancia Scorpion minimum weight cut to 1950 lbs from 2030 lbs.

As printed in Fastrack

In FP Spec Lines, Lancia Scorpion, change Weight as follows:
"~~2030~~ 1950"

2025-12-01 FP Factory Roll Bar Removal on VW Convertible

#39268 from Tim Linerud · Rule change · TB 25-12 (2025-12 Fastrack)

wordingFP VW Rabbit Convertible no longer required to remove factory roll bar.

As printed in Fastrack

In FP Spec Line, Volkswagen Rabbit (Includes Convertible), remove the following wording in Notes:
"~~Factory roll bar must be removed on Cabriolet.~~"

2025-12-01 FP FP Parity Request

#39325 from Mason Workman · Rule change · TB 25-12 (2025-12 Fastrack)

slower · weightFP Acura Integra and Honda Civic models gain 50–79 lbs minimum weight; Mazda Miata and Mercury Capri compression ratio to 11.0:1 and valve lift to .425".

As printed in Fastrack

In FP, change Weight as follows:
Acura Integra (90-93):
"~~2235~~ 2285
*~~2291~~ 2342
**~~2347~~ 2399"
Acura Integra LS (94-01):
"~~2260~~ 2310
*~~2317~~ 2368
**~~2373~~ 2426"
Acura Integra GSR (92-93):
"~~2325~~ 2375
*~~2383~~ 2434
**~~2441~~ 2494"
Honda Civic Del Sol VTEC (94-97):
"~~2290~~ 2340
*~~2347~~ 2399
**~~2378~~ 2457"
Honda Civic Si (99-00):
"~~2250~~ 2300
*~~2306~~ 2358
**~~2363~~ 2415"
FP Spec Lines, change Notes as follows:
Mazda Miata 1.6L (90-97): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."
Mercury Capri 1.6L (91-94): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."

2025-12-01 FP Adjust former-GTL Honda's with B/D-Series Engines

#39374 from Production Committee · Rule change · TB 25-12 (2025-12 Fastrack)

slower · weightFP Honda D15, D16, B16A, B18 engines gain 105–120 lbs minimum weight across seven configurations.

As printed in Fastrack

In GCR, Appendix N GTL inclusion into FP, Engines - HONDA, change Disp. (cc) – Weight (lbs) as follows:
"D15 – 1493cc – ~~1895~~ 2000
D15b7 – 1493cc – ~~1895~~ 2000
D16 – 1590cc – ~~1945~~ 2055
D16A – 1590cc – ~~1945~~ 2055
B16A – 1595cc – ~~1950~~ 2065
B18 – 1797cc – ~~2050~~ 2170
B18 – 1834cc – ~~2065~~ 2185"

2026-02-01 FP Request Toyota 5E Series Engines

#38208 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

addedFP adds Toyota 5E 1497cc DOHC engine, 1900 lbs, 23mm restrictor, SIR fuel induction.

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 5E engine to the "Engines - TOYOTA" section:

A specification table follows in the original; it is not shown here.

2026-02-01 FP Request for Toyota 4E Series Engines

#38209 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

addedFP class adds Toyota 4E DOHC 1331 cc engine, 1900 lbs minimum weight, unrestricted fuel induction.

As printed in Fastrack

In FP Appendix N, add spec line for the Toyota 4E engine to the "Engines - TOYOTA" section:

A specification table follows in the original; it is not shown here.

2026-02-01 FP Dual Carbs for the Fiat X1/9

#39593 from Daniel Snow · Rule change · TB 26-02 (2026-02 Fastrack)

faster · engineFP Fiat X1/9 fuel injection carburetors simplified to one 36 or 40 DCNF option; exhaust valve enlarged to 33.0/1.30.

As printed in Fastrack

In FP Spec Lines, change as follows:
Fiat X-1/9 & Bertone 1300:
"(1) Weber 32 DMTR or DATRA/100 w/32mm bores
(1) 40 DCNF w/32mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 31.3/(1.23)~~30.5/(1.20) (E) 1.23~~
Trans. Speeds: 5"
Fiat X-1/9 & Bertone:
"Fuel Injection
(1) 34 DMTR~~, (1) 36 DCNF w/34mm choke(s), or (1) 40DCNF w/34mm choke(s)~~
(1) 36 or 40 DCNF w/34mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 33.0/(1.30)
Trans. Speeds: 5 or 4"

2026-03-01 FP Correct Valve Sizes on FP Fiat x19 1300 and 1500

#39850 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

otherFP Fiat X-1/9 1300 and 1500 intake and exhaust valve sizes corrected to 36.3/(1.43) and 31.2-33.3/(1.23-1.31).

As printed in Fastrack

In FP Spec Lines, change Drivetrain Notes as follows:
Fiat X-1/9 & Bertone 1300:
Valve Size: ~~"(I) 35.5/(1.40) (E) 31.3/(1.23)~~ (I) 36.3/(1.43) (E) 31.2/(1.23)"
Fiat X-1/9 & Bertone:
Valve Size: ~~"(I) 35.5/(1.40) (E) 33.0/(1.30)~~ (I) 36.3/(1.43) (E) 33.3/(1.31)"

2026-03-01 FP Dual Carburetor Adjustments

#39851 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

faster · inductionFP Fiat X-1/9 & Bertone dual carburetors choke size increases from 28mm to 30mm on intake runner manifold.

As printed in Fastrack

In FP Spec Lines, Fiat X-1/9 & Bertone, change Drivetrain Notes as follows:
"(2) auto-type side-draft w/28 30mm choke(s) on I.R. manifold"

2026-03-01 SRF SRF3 Spark Plugs

#39899 from Robey Clark · Rule change · TB 26-03 (2026-03 Fastrack)

engineSRF3 spark plugs limited to NGK LTR7IX-11 P/N G301041 only; washers and sealing rings prohibited.

As printed in Fastrack

In SRF, GCR section 9.1.8.D.2.H.18, add the following:
"Spark Plugs: P/N G301041 ONLY NGK LTR7IX-11 / Washers or sealing rings are not allowed for any purpose."

What the rules allowed changed as listed; this does not say what any particular car ran.

Sectors

S1 SF → IM1
S2 IM1 → IM2
S3 IM2 → SF
SPd IM2 → IM3 0.02 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.