BoP Lab / Road America

EP at Road America

40 laps are 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	S4
1	BMW Z3 2.5L (1999)	Jon Brakke 2+ cars	EP	89, 89a	2:27.293 C-Q1	2:27.065	2:27.293 C-Q1	2:31.314 C-R			140.8 C-Q1	41.873 C-Q1	56.504 C-Q1	28.770 C-Q1	19.918 C-Q1
2	Mazda RX-7 (1990)	John Hainsworth	EP	95	2:27.632 C-Q2	2:27.632	2:27.632 C-Q2	2:29.539 C-R	2:30.226 C-R	+1.565 C-R	140.3 C-R	42.267 C-Q2	56.874 C-Q2	28.661 C-Q2	19.830 C-Q2
3	BMW Z3 (1999)	Jon Brakke 2+ cars	EP	89	2:27.869 A-R	2:27.453	2:29.239 A-Q3	2:27.869 A-R	2:28.741 A-R	+1.341 A-R	137.0 A-R	41.976 A-R	56.917 A-R	28.755 A-R	19.805 A-R
4	BMW Z3 (1999)	Tyler Ladd 2+ cars	EP	151, 51	2:28.166 A-R	2:27.590	2:30.542 A-Q3	2:28.166 A-R	2:28.939 A-R	+2.178 A-R	137.3 A-P1, A-P2	42.266 A-R	56.939 A-R	28.577 A-R	19.808 A-R
5	Mazda Miata (1999)	Chris Haldeman	EP	28	2:28.600 C-P1	2:28.014	2:28.993 C-Q1	2:37.123 C-R			136.4 C-Q1	42.406 C-P2	56.827 C-Q1	28.969 C-Q1	19.812 C-P1
6	BMW Z3 2.5L (1999)	Tyler Ladd 2+ cars	EP	51x, 51	2:28.756 C-R	2:27.839	2:28.776 C-Q2	2:28.756 C-R	2:29.584 C-R	+1.873 C-R	138.4 C-Q2	42.112 C-Q2	57.084 C-Q1	28.776 C-R	19.867 C-R
7	BMW 325i/is E30 (1987)	Tim Schreyer 2+ cars	EP	38	2:28.765 A-R	2:28.121	2:30.022 A-Q3	2:28.765 A-R	2:28.955 A-R	+1.147 A-R	136.1 A-R	42.268 A-R	57.136 A-R	28.948 A-R	19.769 A-R
8	Caterham 7 America (2000)	Peter Norton	EP	50	2:29.394 C-Q2	2:28.480	2:29.394 C-Q2	2:30.284 C-R	2:30.794 C-R	+2.678 C-R	135.5 C-R	42.702 C-Q2	57.134 C-R	28.848 C-Q2	19.796 C-Q1
9	Mazda RX-7 (1982)	Austin Bradshaw	EP	41	2:29.663 C-Q2	2:29.429	2:29.663 C-Q2	2:30.350 C-R	2:30.906 C-R	+1.734 C-R	137.7 C-Q1	42.399 C-Q2	57.624 C-Q1	29.556 C-Q2	19.850 C-Q2
10	BMW 325i/is (1987)	Tim Schreyer 2+ cars	EP	38	2:30.609 C-P1	2:30.394	2:31.102 C-Q2	2:31.746 C-R	2:32.093 C-R	+2.006 C-R	133.9 C-R	43.078 C-P1	57.574 C-P1	29.548 C-Q2	20.194 C-Q2
11	BMW 328i/is (1997)	Cameron Wogrin	EP	181	2:30.665 C-R	2:30.128	2:31.235 C-Q1	2:30.665 C-R	2:31.629 C-R	+1.144 C-R	137.7 C-Q1, C-Q2	42.693 C-R	58.130 C-R	29.313 C-R	19.992 C-R
12	BMW 325is	Tim Schreyer 2+ cars	EP	38	2:31.093 D-R1	2:30.137	2:31.738 B-Q2	2:31.093 D-R1	2:31.456 D-R1	+1.106 D-R1	134.7 B-R1	42.994 D-R1	57.747 D-R1	29.503 D-R1	19.893 B-R1
13	Mazda Miata (1999)	Tony Ave	EP	4	2:31.119 A-R	2:30.071	2:31.379 A-Q3	2:31.119 A-R	2:31.544 A-R	+0.931 A-R	130.3 A-R	43.401 A-R	57.378 A-Q3	29.153 A-R	20.139 A-Q3
14	Triumph GT6 (1970)	Anthony Parker	EP	44	2:31.647 C-R	2:31.211	2:32.873 C-Q1	2:31.647 C-R	2:32.194 C-R	+1.135 C-R	133.5 C-R	43.294 C-R	57.954 C-R	29.575 C-R	20.388 C-R
15	BMW 325is	Tim Anastopoulos 2+ cars	EP	107	2:31.992 D-R1	2:31.755	2:35.058 B-Q2	2:31.992 D-R1	2:32.234 D-R1	+1.334 D-R1	133.6 D-R1	43.245 D-R1	58.011 D-R1	29.997 D-R1	20.502 D-R1
16	BMW 328i/is E36 (1998)	Bill Miller 2+ cars	EP	47	2:33.090 A-R	2:32.417	2:34.450 A-Q3	2:33.090 A-R	2:33.973 A-R	+1.290 A-R	134.3 A-R	42.671 A-R	59.852 A-R	29.719 A-R	20.175 A-R
17	BMW Z3 2.8L (1998)	Bryce McGuire	EP	27, 27x	2:33.139 C-Q1	2:32.645	2:33.139 C-Q1				132.4 C-P1, C-Q1, C-Q2	43.718 C-Q2	58.485 C-Q1	29.877 C-Q1	20.565 C-P3
18	Mazda Miata (1999)	James Simaras	EP	95, 55	2:33.829 A-R	2:33.454	2:39.040 A-Q3	2:33.829 A-R	2:34.723 A-R	+2.234 A-R	131.5 A-R	43.897 A-R	59.145 A-R	30.140 A-R	20.272 A-R
19	BMW 325i/is E30	Tim Anastopoulos 2+ cars	EP	107	2:34.110 A-R	2:33.791	2:37.464 A-Q3	2:34.110 A-R	2:34.362 A-R	+1.042 A-R	127.8 A-Q3	44.391 A-R	58.428 A-R	30.057 A-R	20.915 A-R
20	BMW Z3 2.5L (1999)	Doug Piner	EP	06	2:34.610 C-Q1	2:34.111	2:34.610 C-Q1	2:38.013 C-R			137.0 C-Q1	43.523 C-Q1	59.990 C-Q2	30.117 C-Q1	20.481 C-P1
21	Mazda RX-8	Thomas Burt 2+ cars	EP	0, 0x	2:34.766 A-R	2:34.394	2:39.874 A-Q3	2:34.766 A-R	2:35.338 A-R	+2.789 A-R	132.8 A-R	44.264 A-R	58.987 A-R	30.269 A-R	20.874 A-R
22	BMW 328is	Bill Miller 2+ cars	EP	47	2:35.003 B-Q2	2:34.051	2:35.003 B-Q2	2:35.070 B-R1	2:39.752 B-R2	+1.380 B-R2	135.6 B-R1	43.534 B-R1	1:00.149 B-Q2	30.242 B-Q2	20.126 B-R1
23	Fiat 124 Spider 2000 (1979)	John Baucom	EP	124	2:35.517 C-Q2	2:34.863	2:35.517 C-Q2	2:35.535 C-R	2:36.540 C-R	+3.266 C-R	133.0 C-Q2	44.373 C-Q2	59.520 C-R	30.354 C-Q2	20.616 C-Q2
24	Mazda RX-7 (1980)	Kurt Frietzsche	EP	40, 40a	2:35.876 C-P3	2:34.580	2:44.563 A-Q3	2:36.206 C-R	2:37.367 C-R	+3.317 C-R	130.3 A-P3	44.336 A-P3	59.305 A-P3	30.427 A-P3	20.512 A-R
25	Mazda RX-7 (1986)	Thomas Burt 2+ cars	EP	0	2:36.909 C-R	2:36.120	2:37.904 C-Q1	2:36.909 C-R	2:37.123 C-R	+2.850 C-R	129.7 C-Q1	44.947 C-Q1	59.606 C-R	30.320 C-R	21.247 C-R
26	BMW Z3 (1996)	Don Tucker 2+ cars	EP	9	2:37.009 A-R	2:36.486	2:47.047 A-Q3	2:37.009 A-R	2:39.620 A-R	+4.220 A-R	130.7 A-R	43.903 A-R	1:00.803 A-R	31.207 A-R	20.573 A-R
27	Mazda Miata (1999)	Joe Carr 2+ cars	EP	12	2:37.177 C-Q1	2:36.329	2:37.177 C-Q1	2:37.225 C-R	2:37.507 C-R	+3.271 C-R	130.1 C-R	44.592 C-Q1	1:00.339 C-R	30.495 C-Q1	20.903 C-P1
28	Mazda Miata	Matthew Novak	EP	78	2:37.489 D-R1	2:37.175		2:37.489 D-R1	2:38.050 D-R1	+0.952 D-R1	123.3 D-R1	45.782 D-R1	59.374 D-R1	30.404 D-R1	21.615 D-R1
29	Datsun 240z	Lance Loughman	EP	22	2:38.568 B-R1	2:37.514	2:39.516 B-Q2	2:38.568 B-R1	2:39.522 B-R2	+2.069 B-R2	131.7 B-R1	44.592 B-R1	1:00.975 B-Q2	31.105 B-R2	20.842 B-R1
30	Mazda Miata (1995)	Don Tucker 2+ cars	EP	9	2:40.618 C-P1	2:39.483	2:44.877 C-Q1	2:41.521 C-R	2:43.537 C-R	+4.436 C-R	129.9 C-R	44.941 C-P1	1:02.310 C-P2	31.112 C-P1	21.120 C-P1
31	Mazda MX-5 (2006)	Whitfield Gregg	EP	17	2:40.913 C-Q1	2:40.143	2:40.913 C-Q1				126.7 C-Q1	45.714 C-Q1	1:01.562 C-Q1	30.998 C-Q1	21.869 C-P1
32	Mazda Miata (1993)	Mark Weber	EP	25, 70	2:41.419 A-R	2:40.240	2:45.258 A-Q3	2:41.419 A-R	2:42.488 A-R	+2.996 A-R	128.2 A-R	45.830 A-R	1:01.762 D-R1	31.319 D-R1	21.329 A-R
33	Mazda RX-7 (1989)	Joe Carr 2+ cars	EP	12	2:42.182 A-R	2:40.403	2:44.754 A-Q3	2:42.182 A-R	2:43.513 A-R	+2.886 A-R	132.6 A-P1	45.216 A-P1	1:02.106 A-P2	31.860 A-R	21.221 A-P1
34	Austin-Healey 3000 (1959)	Rich Walke	EP	75	2:42.279 A-R	2:41.388	2:45.526 A-Q3	2:42.279 A-R	2:44.030 A-R	+3.367 A-R	127.8 A-R	45.652 A-R	1:03.413 A-R	31.483 A-R	20.840 A-R
35	Mazda RX-7 (1984)	Yuri Collazos	EP	77, 77a	2:45.445 C-R	2:44.668	2:46.024 C-Q1	2:45.445 C-R	2:46.686 C-R	+2.873 C-R	129.1 C-R	46.684 C-R	1:03.705 C-R	32.660 C-R	21.619 C-R
36	Mazda RX-7 (1983)	Steve Gaetjens	EP	66	2:46.098 C-Q1	2:45.285	2:46.098 C-Q1	2:53.177 C-R	2:57.318 C-R	+10.173 C-R	122.7 C-R	46.679 C-Q1	1:02.978 C-Q1	32.924 C-Q1	22.704 C-Q1
37	Austin-Healey 3000 (1959)	Rich Olsen	EP	75	2:48.537 C-R	2:47.705	2:56.603 C-Q1	2:48.537 C-R	2:48.915 C-R	+1.139 C-R	122.7 C-R	47.650 C-R	1:04.301 C-R	33.101 C-R	22.653 C-R
38	Mazda Miata	Jose M Paredes >115%	EP	54	3:05.369 D-R1	3:04.361		3:05.369 D-R1	3:07.139 D-R1	+3.347 D-R1	102.1 D-R1	53.630 D-R1	1:09.144 D-R1	35.850 D-R1	25.737 D-R1
39	Porsche 944	Jeff Andersen >115%	EP	01	3:06.081 D-R1	3:04.047		3:06.081 D-R1	3:06.817 D-R1	+1.025 D-R1	106.7 D-R1	52.768 D-R1	1:09.771 D-R1	36.319 D-R1	25.189 D-R1
40	Mazda MX-5 Cup	Thomas Burt 2+ cars >115%	EP	10b	3:25.363 A-P2	3:25.363					105.7 A-P2	56.655 A-P2	1:22.036 A-P2	39.705 A-P2	26.967 A-P2

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. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come 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.

Sectors

S1 SF → I4AT 1.26 mi
S2 I4AT → I11 1.65 mi
S3 I11 → I13AB 0.57 mi
S4 I13AB → SF 0.57 mi
SF Spd SF → SFT 0.02 mi
Spd I4AT → I4A 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.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3	S4
BMW Z3 2.5L	EP	3	2:27.293Jon Brakke	2:27.293Jon Brakke	2:28.756Tyler Ladd	140.8Jon Brakke	41.873Jon Brakke	56.504Jon Brakke	28.770Jon Brakke	19.867Tyler Ladd
Mazda RX-7	EP	7	2:27.632John Hainsworth	2:27.632John Hainsworth	2:29.539John Hainsworth	140.3John Hainsworth	42.267John Hainsworth	56.874John Hainsworth	28.661John Hainsworth	19.830John Hainsworth
Mazda RX-7 (1990)	EP	1	2:27.632John Hainsworth	2:27.632John Hainsworth	2:29.539John Hainsworth	140.3John Hainsworth	42.267John Hainsworth	56.874John Hainsworth	28.661John Hainsworth	19.830John Hainsworth
Mazda RX-7 (1982)	EP	1	2:29.663Austin Bradshaw	2:29.663Austin Bradshaw	2:30.350Austin Bradshaw	137.7Austin Bradshaw	42.399Austin Bradshaw	57.624Austin Bradshaw	29.556Austin Bradshaw	19.850Austin Bradshaw
Mazda RX-7 (1980)	EP	1	2:35.876Kurt Frietzsche	2:44.563Kurt Frietzsche	2:36.206Kurt Frietzsche	130.3Kurt Frietzsche	44.336Kurt Frietzsche	59.305Kurt Frietzsche	30.427Kurt Frietzsche	20.512Kurt Frietzsche
Mazda RX-7 (1986)	EP	1	2:36.909Thomas Burt	2:37.904Thomas Burt	2:36.909Thomas Burt	129.7Thomas Burt	44.947Thomas Burt	59.606Thomas Burt	30.320Thomas Burt	21.247Thomas Burt
Mazda RX-7 (1989)	EP	1	2:42.182Joe Carr	2:44.754Joe Carr	2:42.182Joe Carr	132.6Joe Carr	45.216Joe Carr	1:02.106Joe Carr	31.860Joe Carr	21.221Joe Carr
Mazda RX-7 (1984)	EP	1	2:45.445Yuri Collazos	2:46.024Yuri Collazos	2:45.445Yuri Collazos	129.1Yuri Collazos	46.684Yuri Collazos	1:03.705Yuri Collazos	32.660Yuri Collazos	21.619Yuri Collazos
Mazda RX-7 (1983)	EP	1	2:46.098Steve Gaetjens	2:46.098Steve Gaetjens	2:53.177Steve Gaetjens	122.7Steve Gaetjens	46.679Steve Gaetjens	1:02.978Steve Gaetjens	32.924Steve Gaetjens	22.704Steve Gaetjens
BMW Z3	EP	3	2:27.869Jon Brakke	2:29.239Jon Brakke	2:27.869Jon Brakke	137.3Tyler Ladd	41.976Jon Brakke	56.917Jon Brakke	28.577Tyler Ladd	19.805Jon Brakke
BMW Z3 (1999)	EP	2	2:27.869Jon Brakke	2:29.239Jon Brakke	2:27.869Jon Brakke	137.3Tyler Ladd	41.976Jon Brakke	56.917Jon Brakke	28.577Tyler Ladd	19.805Jon Brakke
BMW Z3 (1996)	EP	1	2:37.009Don Tucker	2:47.047Don Tucker	2:37.009Don Tucker	130.7Don Tucker	43.903Don Tucker	1:00.803Don Tucker	31.207Don Tucker	20.573Don Tucker
Mazda Miata	EP	8	2:28.600Chris Haldeman	2:28.993Chris Haldeman	2:31.119Tony Ave	136.4Chris Haldeman	42.406Chris Haldeman	56.827Chris Haldeman	28.969Chris Haldeman	19.812Chris Haldeman
Mazda Miata (1999)	EP	4	2:28.600Chris Haldeman	2:28.993Chris Haldeman	2:31.119Tony Ave	136.4Chris Haldeman	42.406Chris Haldeman	56.827Chris Haldeman	28.969Chris Haldeman	19.812Chris Haldeman
Mazda Miata	EP	2	2:37.489Matthew Novak		2:37.489Matthew Novak	123.3Matthew Novak	45.782Matthew Novak	59.374Matthew Novak	30.404Matthew Novak	21.615Matthew Novak
Mazda Miata (1995)	EP	1	2:40.618Don Tucker	2:44.877Don Tucker	2:41.521Don Tucker	129.9Don Tucker	44.941Don Tucker	1:02.310Don Tucker	31.112Don Tucker	21.120Don Tucker
Mazda Miata (1993)	EP	1	2:41.419Mark Weber	2:45.258Mark Weber	2:41.419Mark Weber	128.2Mark Weber	45.830Mark Weber	1:01.762Mark Weber	31.319Mark Weber	21.329Mark Weber
BMW 325i/is E30	EP	2	2:28.765Tim Schreyer	2:30.022Tim Schreyer	2:28.765Tim Schreyer	136.1Tim Schreyer	42.268Tim Schreyer	57.136Tim Schreyer	28.948Tim Schreyer	19.769Tim Schreyer
BMW 325i/is E30 (1987)	EP	1	2:28.765Tim Schreyer	2:30.022Tim Schreyer	2:28.765Tim Schreyer	136.1Tim Schreyer	42.268Tim Schreyer	57.136Tim Schreyer	28.948Tim Schreyer	19.769Tim Schreyer
BMW 325i/is E30	EP	1	2:34.110Tim Anastopoulos	2:37.464Tim Anastopoulos	2:34.110Tim Anastopoulos	127.8Tim Anastopoulos	44.391Tim Anastopoulos	58.428Tim Anastopoulos	30.057Tim Anastopoulos	20.915Tim Anastopoulos
Caterham 7 America	EP	1	2:29.394Peter Norton	2:29.394Peter Norton	2:30.284Peter Norton	135.5Peter Norton	42.702Peter Norton	57.134Peter Norton	28.848Peter Norton	19.796Peter Norton
BMW 325i/is	EP	1	2:30.609Tim Schreyer	2:31.102Tim Schreyer	2:31.746Tim Schreyer	133.9Tim Schreyer	43.078Tim Schreyer	57.574Tim Schreyer	29.548Tim Schreyer	20.194Tim Schreyer
BMW 328i/is	EP	1	2:30.665Cameron Wogrin	2:31.235Cameron Wogrin	2:30.665Cameron Wogrin	137.7Cameron Wogrin	42.693Cameron Wogrin	58.130Cameron Wogrin	29.313Cameron Wogrin	19.992Cameron Wogrin
BMW 325is	EP	2	2:31.093Tim Schreyer	2:31.738Tim Schreyer	2:31.093Tim Schreyer	134.7Tim Schreyer	42.994Tim Schreyer	57.747Tim Schreyer	29.503Tim Schreyer	19.893Tim Schreyer
Triumph GT6	EP	1	2:31.647Anthony Parker	2:32.873Anthony Parker	2:31.647Anthony Parker	133.5Anthony Parker	43.294Anthony Parker	57.954Anthony Parker	29.575Anthony Parker	20.388Anthony Parker
BMW 328i/is E36	EP	1	2:33.090Bill Miller	2:34.450Bill Miller	2:33.090Bill Miller	134.3Bill Miller	42.671Bill Miller	59.852Bill Miller	29.719Bill Miller	20.175Bill Miller
BMW Z3 2.8L	EP	1	2:33.139Bryce McGuire	2:33.139Bryce McGuire		132.4Bryce McGuire	43.718Bryce McGuire	58.485Bryce McGuire	29.877Bryce McGuire	20.565Bryce McGuire
Mazda RX-8	EP	1	2:34.766Thomas Burt	2:39.874Thomas Burt	2:34.766Thomas Burt	132.8Thomas Burt	44.264Thomas Burt	58.987Thomas Burt	30.269Thomas Burt	20.874Thomas Burt
BMW 328is	EP	1	2:35.003Bill Miller	2:35.003Bill Miller	2:35.070Bill Miller	135.6Bill Miller	43.534Bill Miller	1:00.149Bill Miller	30.242Bill Miller	20.126Bill Miller
Fiat 124 Spider (2000)	EP	1	2:35.517John Baucom	2:35.517John Baucom	2:35.535John Baucom	133.0John Baucom	44.373John Baucom	59.520John Baucom	30.354John Baucom	20.616John Baucom
Datsun 240z	EP	1	2:38.568Lance Loughman	2:39.516Lance Loughman	2:38.568Lance Loughman	131.7Lance Loughman	44.592Lance Loughman	1:00.975Lance Loughman	31.105Lance Loughman	20.842Lance Loughman
Mazda MX-5	EP	2	2:40.913Whitfield Gregg	2:40.913Whitfield Gregg		126.7Whitfield Gregg	45.714Whitfield Gregg	1:01.562Whitfield Gregg	30.998Whitfield Gregg	21.869Whitfield Gregg
Mazda MX-5 (2006)	EP	1	2:40.913Whitfield Gregg	2:40.913Whitfield Gregg		126.7Whitfield Gregg	45.714Whitfield Gregg	1:01.562Whitfield Gregg	30.998Whitfield Gregg	21.869Whitfield Gregg
Mazda MX-5 Cup	EP	1	3:25.363Thomas Burt			105.7Thomas Burt	56.655Thomas Burt	1:22.036Thomas Burt	39.705Thomas Burt	26.967Thomas Burt
Austin-Healey 3000	EP	2	2:42.279Rich Walke	2:45.526Rich Walke	2:42.279Rich Walke	127.8Rich Walke	45.652Rich Walke	1:03.413Rich Walke	31.483Rich Walke	20.840Rich Walke
Porsche 944	EP	1	3:06.081Jeff Andersen		3:06.081Jeff Andersen	106.7Jeff Andersen	52.768Jeff Andersen	1:09.771Jeff Andersen	36.319Jeff Andersen	25.189Jeff Andersen

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

June Sprints 2025 → Runoffs 2025 2025-06-06 to 2025-09-29

2025-07-01 EP BMW Z4 update

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

Summary

slowerEP BMW Z4 03-05 restricted to 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 EP EP Fiat 124 Spider Competition Adjustment Request

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

Summary

fasterEP Fiat 124 Spider 1600 & 2000 weight drops 50 lbs to 2000; carburetors gain 2mm chokes to 36mm.

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."

Applies to Fiat 124 Spider 2000 on this page: John Baucom

Runoffs 2025 → June Sprints 2026 2025-09-29 to 2026-06-05

2025-10-01 EP HP Plymouth Arrow spec omission

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

Summary

wordingHP Plymouth Arrow transmission max speeds clarified to 4 or 5.

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 EP Add Wheel Diameter to Appendix G

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

Summary

wordingEP, FP, HP wheel diameter added to Appendix G as absolute maximum specification.

As printed in Fastrack

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

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

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

Summary

wordingEP, FP, HP throttle body inside dimensions must remain stock with +/-.25mm tolerance; butterfly dimensions stock in FP, HP only.

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 EP Please Lower Weight of 280Z

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

Summary

fasterEP Nissan 280Z minimum weight reduced from 2560 to 2400 lbs.

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 EP Miata Weight Adjustment Follow Up

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

Summary

fasterEP Mazda MX-5 1.8L 90-97 weight reduced to 2125 lbs from 2150 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 EP Weight Break for 1098 Midget / Sprite

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

Summary

fasterHP Austin-Healey Sprite/Midget 1098cc minimum weight drops 80 lbs to 1550.

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 EP HP Volvo 142 spec omission

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

Summary

slowerHP Volvo 142/142E gains compression ratio limit 12.0:1 and valve lift limit .425".

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 EP HP Mini DOHC 1.6

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

Summary

slowerHP Mini Cooper 07-15 valve lift reduced 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 EP Add to Rabbit description

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

Summary

wordingFP and HP Volkswagen Rabbit descriptions updated: Convertible changed to Cabriolet in FP; Cabriolet added to three HP engine variants.

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 EP Clean-up 9.1.5.E.7e

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

Summary

wordingEP, FP, HP: rear drum brake to disc 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~~

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~~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 EP Add TB size to Ford Mustang (94-98) Spec Line

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

Summary

wordingEP Ford Mustang (94-98) fuel injected throttle body inside diameter specified at 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"

2025-12-01 EP TR2 Notes E&O

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

Summary

unclearEP Triumph TR2-TR4A allows 5-speed gearbox without overdrive; removes Weber carb and weight specification.

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 EP Balance of Power

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

Summary

slowerEP BMW Z3 2.5L restrictor reduced 52mm to 50mm, weight increased to 2550 lbs base; five other BMW models get smaller restrictors.

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"

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In EP Spec Lines, BMW Z3 2.5L, change Weight as follows:
"~~2500~~ 2550
*~~2563~~ 2614
**~~2625~~ 2678"

2026-01-01 EP Request to Update E30 BMW Throttle Body Diameter Verbiage

#39363 from Tim Schreyer · Rule change · TB 26-01 (2026-01 Fastrack)

Summary

wordingEP BMW 325i/is E30 throttle body specified as 60mm in fuel injection notes.

As printed in Fastrack

In EP Spec Line BMW 325i/is E30 (84-91), change Drivetrain Notes as follows:
"Fuel Injection, TB: 60mm"

2026-05-01 EP Miata track width - errors and omissions

#39976 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)

Summary

wordingEP Mazda MX-5 94-97 front track widens to 1516 mm (59.7 in.), rear to 1534 mm (60.4 in.).

As printed in Fastrack

In EP Spec Lines, Mazda MX-5 / Miata (94-97), change Track (F/R) mm/(in.) as follows:
Track (F/R) mm/(in.): ~~"1483/1509 (58.4/59.4)~~ 1516/1534(59.7/60.4)"

Applies to Mazda Miata on this page: Matthew Novak, Jose M Paredes, Don Tucker

Applies to Mazda MX-5 on this page: Thomas Burt

2026-05-01 EP Triumph GT6 Spec Change.

#40098 from Anthony Parker · Rule change · TB 26-05 (2026-05 Fastrack)

Summary

fasterEP Triumph GT6 auto-type drivetrain choke increases from 44mm to 45mm.

As printed in Fastrack

In EP Spec Lines, Triumph GT6, change the "Drivetrain Notes" as follows:
"(2) auto-type w/44 45mm choke(s)"

Applies to Triumph GT6 on this page: Anthony Parker

2026-06-01 EP Honda S2000 Hardtop

#40138 from John Wilson · Rule change · TB 26-06 (2026-06 Fastrack)

Summary

otherEP Honda S2000 now permits Mugen hardtop P/N 0000-04-2312 or equivalent.

As printed in Fastrack

In EP Spec Lines, Honda S2000, add to Chassis Notes the following:
"Mugen hardtop (P/N 0000-04-2312), or an aftermarket equivalent, is permitted."

June Sprints 2026 → Runoffs 2026 2026-06-05 to 2026-09-28

2026-07-01 EP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7

#40322 from Thomas Beverly · Rule change · TB 26-07 (2026-07 Fastrack)

Summary

cars added1996-2000 Honda Civic CX/DX/LX with D16Y7 engine newly classified in HP.

As printed in Fastrack

In HP, classify Honda Civic CX/DX/LX (96-00):

2026-07-01 EP 1275 Midget/Sprit Alternate intake manifold E/O

#40370 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)

Summary

inductionHP Sprite/Midget 1275 allows MG-B alternate intake manifold with 1.5" SU carbs; balance tube shortening and flange modification permitted.

As printed in Fastrack

In HP Spec Lines, Austin-Healey Sprite Mk I, II, III, IV MG Midget Mk I, II, III, IV & 1500, change Drivetrain Notes as follows:
"(2) 1.25” SU w/ no modifications
(2) 1.5” SU w/ no modifications (on alternate manifold)
Valves: (I) 33.0/(1.30) (E) 29.5/(1.16)
Comp. ratio 12.0:1, Valve lift .450”
Trans. Speeds: 4
Drivetrain Level 2 preparation only.
Listed spec line weight does not change with alternate or stock transmission.

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

2026-07-01 EP HP Honda Civic (92-95)

#40464 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)

Summary

fasterHP Honda Civic DX/LX (92-95) wheels widen to 15x7, weight drops to 2350 lbs.

As printed in Fastrack

In HP, make the following changes to the "Honda Civic DX (92-95)" spec line:
Spec Line Name: "Honda Civic DX/LX (92-95)"
Wheels: "~~13x7~~ 15x7"
Wheelbase: "2/ 4 door: 2621/(103.2) 2/3 door: 2573/(101.3)"
Weight: "~~2420~~ 2350"

2026-08-01 EP Mini Cooper Compression Ratio

#40517 from Brian Linn · Rule change · TB 26-08 (2026-08 Fastrack)

Summary

fasterHP Mini Cooper 02-06 compression ratio increases from 10.6 to 11.0:1.

As printed in Fastrack

In HP Spec Lines, Mini Cooper (02-06) (includes 05-08 convertible), change Drivetrain Notes as follows:
"Comp. ratio ~~10.6~~ 11.0:1, Valve lift .450”

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