BoP Lab / Buttonwillow Raceway Park

FE + SRF + F5 + GT3 at Buttonwillow Raceway Park

View sectors & track maps

No map published for Cal Club 2024, Cal Club 2023, Cal Club 2021.

This track has been raced on 3 configurations (19, 2.92 mi; 1.83 mi; 3.02 mi). Laps on different configurations are not comparable, so only events on the 2.92 mile layout are shown; switch above to see the others.

FE has no laps in the events chosen. It ran at Super Tour Apr 2019, Super Tour Apr 2018, Super Tour Apr 2017: add those events.

SRF has no laps in the events chosen. It ran at Super Tour Apr 2017, Majors Apr 2016: add those events.

F5 has no laps in the events chosen. It ran at Super Tour Apr 2017: add that event.

One session is left out because the timing does not look like full laps: Cal Club 2023 Qualifying #2.

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	Nissan 350Z	Troy Ermish	GT3	38	1:49.458 E-Q2	1:49.265	1:49.458 E-Q2	1:51.620 E-R1	1:52.328 E-R1	+2.295 E-R1	122.3 E-Q2	41.170 E-Q2	33.043 E-Q2	35.052 E-Q2
2	Nissan 240SX	Collin Jackson	GT3	53	1:50.499 E-Q2	1:49.054	1:50.499 E-Q2	1:50.590 E-R	1:53.177 E-R	+3.525 E-R	121.4 E-R, E-Q1	40.640 E-R	33.054 E-R	35.360 E-Q2
3	Mazda RX-7	Michael Lewis	GT3	32, 72	1:51.885 E-Q2	1:50.694	1:51.885 E-Q2	1:52.244 E-R2	1:53.715 E-R2	+3.712 E-R2	120.0 E-R1	41.276 E-Q2	33.670 E-Q2	35.748 E-Q2
4	Mazda RX-3	Tony Rivera	GT3	09	1:54.819 E-R2	1:54.372	1:56.515 E-Q1	1:54.819 E-R2	1:55.722 E-R2	+2.300 E-R2	121.9 E-R2	42.957 E-Q1	34.521 E-R2	36.894 E-R1
5	Nissan 240sx	Doug Ruthroff	GT3	48	1:54.875 E-Q2	1:54.875	1:54.875 E-Q2	1:57.174 E-R1	2:00.053 E-R2	+3.037 E-R2	118.2 E-Q1	42.998 E-Q2	35.015 E-Q2	36.862 E-Q2
6	Toyota Paseo	Wolfgang Maike	GT3	15	1:56.336 C-R1	1:55.756	1:56.688 C-Q2	1:56.336 C-R1	1:58.326 C-R1	+2.767 C-R1	119.5 E-Q2	43.585 C-R1	35.029 C-R1	37.142 C-R1
7	Mazda RX-7	Christopher Qualls	GT3	62	1:56.511 E-R1	1:55.473	1:56.582 E-Q2	1:56.511 E-R1	1:58.529 E-R1	+4.129 E-R1	118.1 E-R2	43.028 E-Q2	35.434 E-R1	37.011 E-R1
8	Honda Civic TCR	Taz Harvey	GT3	88	1:56.678 C-P	1:56.100	1:56.680 C-Q2	1:57.368 C-R1	1:58.625 C-R1	+2.448 C-R1	118.4 C-R2	43.597 C-P	35.216 C-R1	37.287 C-P
9	Mazda RX-7	Mike Henderson	GT3	121	1:56.776 E-R1	1:56.112	1:56.916 E-Q2	1:56.776 E-R1	1:58.493 E-R1	+3.027 E-R1	121.8 E-Q2	44.145 E-R1	34.892 E-R1	37.075 E-Q2
10	Mazda MX-5	Michael Heintzman 2+ cars	GT3	77	1:57.573 E-Q1	1:55.990	1:57.573 E-Q1	2:01.160 E-R1	2:46.597 E-R1	+34.119 E-R1	117.1 E-Q1	43.339 E-P	35.306 E-Q1	37.345 E-P
11	Mazda MX-5	Joe Carr	GT3	12	2:00.593 E-Q1	2:00.099	2:00.593 E-Q1				112.4 E-Q1, E-Q2	44.859 E-Q2	36.621 E-Q1	38.619 E-Q2
12	Mazda Miata	Michael Heintzman 2+ cars	GT3	77	2:02.657 C-P	2:02.473					114.9 C-P	45.681 C-P	36.859 C-P	39.933 C-P
13	Mazda RX-7	Scott Graham	GT3	6	2:04.830 C-Q2	2:04.830	2:04.830 C-Q2				110.6 C-Q2	47.468 C-Q2	37.533 C-Q2	39.829 C-Q2
14	Volkswagen GTI	Tim Linerud >115%	GT3	95	2:50.333 E-R1	2:50.333		2:50.333 E-R1			76.4 E-R1	1:07.636 E-R1	49.272 E-R1	53.425 E-R1

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 → IM1
S2 IM1 → IM3
S3 IM3 → 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.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
Nissan 350Z	GT3	1	1:49.458Troy Ermish	1:49.458Troy Ermish	1:51.620Troy Ermish	122.3Troy Ermish	41.170Troy Ermish	33.043Troy Ermish	35.052Troy Ermish
Nissan 240SX	GT3	2	1:50.499Collin Jackson	1:50.499Collin Jackson	1:50.590Collin Jackson	121.4Collin Jackson	40.640Collin Jackson	33.054Collin Jackson	35.360Collin Jackson
Nissan 240SX	GT3	1	1:50.499Collin Jackson	1:50.499Collin Jackson	1:50.590Collin Jackson	121.4Collin Jackson	40.640Collin Jackson	33.054Collin Jackson	35.360Collin Jackson
Nissan 240sx	GT3	1	1:54.875Doug Ruthroff	1:54.875Doug Ruthroff	1:57.174Doug Ruthroff	118.2Doug Ruthroff	42.998Doug Ruthroff	35.015Doug Ruthroff	36.862Doug Ruthroff
Mazda RX-7	GT3	4	1:51.885Michael Lewis	1:51.885Michael Lewis	1:52.244Michael Lewis	121.8Mike Henderson	41.276Michael Lewis	33.670Michael Lewis	35.748Michael Lewis
Mazda RX-3	GT3	1	1:54.819Tony Rivera	1:56.515Tony Rivera	1:54.819Tony Rivera	121.9Tony Rivera	42.957Tony Rivera	34.521Tony Rivera	36.894Tony Rivera
Toyota Paseo	GT3	1	1:56.336Wolfgang Maike	1:56.688Wolfgang Maike	1:56.336Wolfgang Maike	119.5Wolfgang Maike	43.585Wolfgang Maike	35.029Wolfgang Maike	37.142Wolfgang Maike
Honda Civic TCR	GT3	1	1:56.678Taz Harvey	1:56.680Taz Harvey	1:57.368Taz Harvey	118.4Taz Harvey	43.597Taz Harvey	35.216Taz Harvey	37.287Taz Harvey
Mazda MX-5	GT3	2	1:57.573Michael Heintzman	1:57.573Michael Heintzman	2:01.160Michael Heintzman	117.1Michael Heintzman	43.339Michael Heintzman	35.306Michael Heintzman	37.345Michael Heintzman
Mazda Miata	GT3	1	2:02.657Michael Heintzman			114.9Michael Heintzman	45.681Michael Heintzman	36.859Michael Heintzman	39.933Michael Heintzman
Volkswagen GTI	GT3	1	2:50.333Tim Linerud		2:50.333Tim Linerud	76.4Tim Linerud	1:07.636Tim Linerud	49.272Tim Linerud	53.425Tim Linerud

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

Cal Club 2021 → Cal Club 2022 2021-02-19 to 2022-02-17

2021-03-01 SRF Mandatory identification:

#30223 from Robey Clark · Rule change · TB 21-03 (2021-03 Fastrack)

In SRF, GCR section 9.1.8.E.2.B, change as follows:
"Mandatory identification: "SRF3" near the side car numbers,. ~~Approved (2) “Ford Performance” on each sideof the engine cover~~
~~plus a Ford Blue Oval on the center of the Nose & (2) “Performance Electronics” on eachside of the tail.~~ "Hoosier" logo (4) on
both sides front lower outer corners of the nose, and each side of the tail."

2021-05-01 GT3 Mazda MZR 2.0L Engine

#30455 from Michael Heintzman · Rule change · TB 21-05 (2021-05 Fastrack)

In GT3 Engines - MAZDA, MZR DOHC 87.38, change Fuel Induction as follows:
"31 32"

2021-05-01 GT3 Disfranchised GT3 Mazda, correct choke size

#30570 from Grand Touring Committee · Rule change · TB 21-05 (2021-05 Fastrack)

In GT3 Engines - MAZDA, Renesis Bridgeport, change Fuel Induction as follows:
"44 2mm"
In GT3 Engines - MAZDA, 13B Bridgeport, change Fuel Induction as follows:
"44 2mm"

2021-06-01 FE FE Radiator Screens

#30575 from Robey Clark · Rule change · TB 21-06 (2021-06 Fastrack)

added · aeroFE radiator screens now allowed, maximum ¼ inch from sidepod front vertical plane.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.F.e, add language as follows:
"Radiator screens are allowed and recommended. Screens may be placed no more than ¼ inch from the vertical plane of the
front of the sidepods."

2021-06-01 SRF SRF3 Alternator Pulley

#30684 from Robey Clark · Rule change · TB 21-06 (2021-06 Fastrack)

In SRF, GCR section 9.1.8.E.2.H.17, add the following:
"Alternator Pulley: P/N G902130 or P/N G902130A. 12oz minimum weight"

2021-06-01 F5 Request to Allow Rotax 593 HO Engine

#30712 from Jack Walbran · Rule change · TB 21-06 (2021-06 Fastrack)

addedF500 Rotax 593 HO engine now permitted; 875 lbs minimum weight, MA0242SP1020A or MA0242SP1063A restrictor, specific intake boots and piston required.

As printed in Fastrack

In F500, GCR section 9.1.1.D.14, Snowmobile Derived Engines, add the following:
"Rotax 593 in a carbureted, non-HO or HO version;"
In F500, GCR section 9.1.1.D.14.A, add the following:
"38mm intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 (last 6 digits 867862 are
embossed on the boot), or Kimpex 07-100-33, shall be used for the 493 and 593 non-HO engines. 38mm intake boots, BPP
420867882 (last 6 digits 867882 are embossed on the boot) shall be used for the 2003 593 HO engine, and BPP 420867879 (last 6
digits 867879 are embossed on the boot) shall be used for the 2004-2007 593 HO engines."
In F500, GCR section 9.1.1.D.14.I.3, add the following:
"Rotax 593 non-HO (0.010" overbore): Rotax P/N 420889171"
In F500, GCR section 9.1.1.D.14.J.3, add the following:
"Rotax 593 non-HO engine only: Rotax OEM 0.010" overbore piston (P/N 420889171)."
In F500, GCR section 9.1.1.D.14.K, add the following:
"Rotax 593 non-HO engine only:"
In F500 Engine Table, add the following:
F500 Version/Model Weight
(lbs) Inlet Restrictor Outlet Restriction Notes
Rotax
593*
Carbureted HO
version (03-07) 875 MA0242SP1020A
or
MA0242SP1063A
Y-pipe exhaust
manifold and single
expansion chamber (ref
9.1.1.D.14.B)
Note 1 and 4. Restrictor size and
type is to be displayed by the
following designation: 593 RSTR

2021-07-01 GT3 Request to Permit FP cars in GT3

#30611 from Matt Wolfe · Rule change · TB 21-07 (2021-07 Fastrack)

In GCR, Section 9.1.2.F.3. add the following:
"8. Current FP spec line cars may compete in GT3 as long as they maintain their full FP rule set."

2021-07-01 FE FE Tire Rule Changes

#30754 from Robey Clark · Rule change · TB 21-07 (2021-07 Fastrack)

wordingFE removes qualifying tire marking requirements and rain tire set rules; renumbers tire warmer prohibition.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.M, make changes as follows:
"WET
Hoosier
Front: P/N: 44195 W3, 22.0 X 7.5-13 (compliant through 12/31/2022)
or P/N: 44196 W3, 22.0 X 8.0-13
Rear: P/N: 44217 W3, 22.0 X 9.0-13
~~a. A competitor shall start the race on at least 3 tires used in a qualifying session for the race as identified by markings made on~~
~~the tires by a race official. It is the responsibility of the competitor to ensure that his or her tires are appropriately marked prior~~
~~to (e.g. on the false grid), during, or immediately after (e.g. as the car leaves the track) a qualifying session.~~
~~b. For races with more than one qualifying session, a competitor shall start the race on any 3 or 4 marked tires from any~~
~~qualifying session for the race.~~
~~c. If a competitor chooses to start the race on any more than one tires that was not used in a qualifying session for the race and~~
~~not appropriately marked, the competitor shall forfeit his or her grid position and start from the back of the grid. This forfeiture~~
~~of grid position shall not apply if all qualifying sessions for the race were run under rain or wet conditions.~~
Table 2 (Spec Line Cars)
Car Engine
Wheel
Width (in)
± .060
Aero Transmission Weight Notes
Ralt RT40, Ralt
RT41, Swift 008, and
Swift 014 chassis

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

2021-07-01 FE Radiator Screens Clarification

#30792 from Robey Clark · Rule change · TB 21-07 (2021-07 Fastrack)

wordingFE radiator screens may not protrude more than ¼ inch in front of the outside vertical plane of the sidepods.

As printed in Fastrack

RM 21-04. In FE, GCR section 9.1.1.I.2.F.e, change as follows:
"Radiator screens are allowed and recommended. Screens may ~~be placed no~~ not protrude more than ¼ inch ~~from~~ in front
of the outside vertical plane of ~~the front of~~ the sidepods."

2021-08-01 GT3 Request to Update GTA Obsolete Part Numbers

#30615 from Butch Kummer · Rule change · TB 21-08 (2021-08 Fastrack)

wordingGTA part numbers updated: 0-80541-1 to 0-80541-2 in two locations and 6010 to 6014X in TA2 Appendix.

As printed in Fastrack

In GCR, Section 9.1.2.G.16., change as follows:
"~~0-80541-1~~ 0-80541-2"
In GCR, Section 9.1.2.G., Appendix Z 5.a. change as follows:
"~~0-80541-1~~ 0-80541-2"
In GCR, TA2 Appendix B.3.4, change as follows:
"#~~6010~~ 6014X"

2021-08-01 SRF SRF Wet Tires

#30849 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

In SRF, GCR section 9.1.8.E.1.X.f, make changes as follows:
"Dry:
Front – Hoosier P/N 46340 P185/60ZR13 SRF
Rear – Hoosier P/N 46350 P205/60ZR13 SRF
Wet:
Front – Hoosier P/N 46100 P185/60R13 H20
Rear – Hoosier P/N 46105 P205/60R13 H20
or

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Front – Hoosier P/N 46100 P185/60R13 W2 (effective Oct. 4, 2021)
Rear – Hoosier P/N 46105 P205/60R13 W2 (effective Oct. 4, 2021)"

2021-08-01 F5 Clarify allowable assisted shifting systems

#30871 from Formula/Sports Racing Committee · Rule change · TB 21-08 (2021-08 Fastrack)

wordingF5 clarifies mechanical shifting only; throttle-cut and flat-shifter devices permitted if driver retains full control.

As printed in Fastrack

In F5, GCR section 9.1.1.D.6.B.4, make changes as follows:
"All gear changes must be initiated and ~~made~~ completed by the driver. Only mechanical gear shifting mechanisms are permitted.
This may include cables, rods, or other mechanical linkage systems. All other shifting mechanisms are not permitted. This
prohibition shall include electric solenoid shifters, air-shifters, ~~etc.~~ and other devices not mechanically actuated and controlled
completely by the driver. Devices that allow pre-selected gear changes and closed-loop systems that use feedback from sensors
to vary the timing of the gear selection process are also prohibited.
Devices that interact with the throttle, ignition, or fuel system during a shift operation (for example: ignitions cuts, flat shifters,
blippers) are permitted, but no such devices shall remove the driver's control of the gear change initiation, gear selection or
completion. The burden of proving that a device is in compliance with this rule shall be upon the competitor."

2021-08-01 SRF SADEV-SRF3 Transmission

#30926 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

In SRF, GCR section 9.1.8.E.2.K, make changes to gear ratios as follows:
"Gear Ratios:
Ford/Mazda OEM 5-Speed:
1st 3.42 : 1
2nd 1.84 : 1
3rd 1.29 : 1
4th 0.97 : 1
5th 0.77 : 1

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Final Drive Ratio: 3.85
OR
SADEV-SRF3 6-Speed Sequential (beginning Oct. 4, 2021):

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

2021-08-01 SRF SRF Update Maintenance, Repairs and Seals

#30961 from Robey Clark · Rule change · TB 21-08 (2021-08 Fastrack)

In SRF, GCR section 9.1.8.E.1.C, make changes as follows:
"If any ~~official~~ Enterprises seal is broken, by an Enterprises Customer Service Rep. (CSR) emergency field repair, accident, or
intent, the procedures outlined under ~~C.20.,~~ section S shall be followed. Parts with an Enterprises part number having the prefix
"10" are considered to be unrestricted, ~~providing~~ provided their dimensions are comparable."
In SRF, GCR section 9.1.8.E.1.S, make changes as follows:
"SCCA Enterprises' seals ~~on engine are required for all races~~ must be present on driveline components in designated locations for
all SCCA sanctioned events. Any competitor who ~~runs~~ participates in an event without ~~all proper engine~~ seals ~~in the required~~
~~locations shall have his engine removed and shipped to Enterprises for testing and sealing after that event~~ must remove his

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unsealed component and it must be inspected by a Customer Service Rep. (CSR) or Enterprises. Notation shall be made in the
vehicle logbook and seals checked prior to the next event. The competitor will be responsible for all cost incurred by this
procedure. ~~regardless of the findings, and~~ If the component is found to be out of specification, the competitor is subject to
penalty by the SOM ~~if engine is found to be not as specified~~."
"SCCA Enterprises' seals are required on all SPEC RACER FORD engines and transmissions."

2021-08-01 F5 Request to correct terminology

#30976 from Jim Murphy · Rule change · TB 21-08 (2021-08 Fastrack)

wordingF5 single-seat open-wheel cars: rigid suspension becomes limited suspension in class definition.

As printed in Fastrack

In F5, GCR section 9.1.1.D.1, change as follows:
"A class for single seat, open wheel, ~~rigid~~ limited suspension race cars using either a snowmobile-derived engine and drive
components or a 600cc motorcycle engine."

2021-10-01 GT3 Request car classification

#31032 from Bryan Scheible · Rule change · TB 21-10 (2021-10 Fastrack)

addedGT3 Volkswagen Fun Cup Beetle EVO3 classified, sealed SOHC 1984cc engine, 2060 lbs minimum weight.

As printed in Fastrack

In GT3 Engines - VOLKSWAGEN, classify Fun Cup Beetle EVO3 as follows:
GT3 Engines - VOLKSWAGON

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

2021-11-01 GT3 Please approve 1964-1968 Ford Cortina GT for competition in GT#

#30941 from Randall Smart · Rule change · TB 21-09 (2021-09 Fastrack)

In GT3 Cars - Ford, classify Ford Cortina GT as follows effective 11/1/2021:
GT3 Cars - Ford
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ford Cortina GT 64-68 2dr. RWD 98.0 “

2021-12-01 SRF Three Updates to SRF Rules

#31523 from Robey Clark · Rule change · TB 21-12 (2021-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.X.f, change as follows:
"Wet:
Front – Hoosier P/N 46100 P185/60R13 H20
Rear – Hoosier P/N 46105 P205/60R13 H20
Ground clearance is 2.5" with driver as raced when H20 tires are used.
or
Front – Hoosier P/N 46100 P185/60 65R13 W2 (effective Oct. 4, 2021)
Rear – Hoosier P/N 46105 P205/60R13 W2 (effective Oct. 4, 2021)"

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In SRF, GCR section 9.1.8.E.2.H.24, change as follows:
"Air Box: P/N G592230 ~~Mandatory unmodified~~ As delivered, except as noted under body work, Air Box floor vent must remain
open ~~and un-obstructed~~."
In SRF, GCR section 9.1.8.E.2.H, add a new section as follows:
"25. SRF3 Restrictor plate: P/N G301048 As delivered, installed between throttle body and intake manifold. Mandatory Jan. 1,

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

2021-12-01 FE Two FE2 Rule Updates

#31524 from Robey Clark · Rule change · TB 21-12 (2021-12 Fastrack)

In FE, GCR section 9.1.1.I.2.F.j, add language as follows:
"Enterprise’s windscreen Only P/N: WM137000 is allowed as delivered."
In FE, GCR section 9.1.1.I.2.P.c, change as follows:
"Racer’s tape may be used to repair crash damage, or as a precautionary means of securing the body panels or retaining latches.
Crash-damage is defined as having occurred during the current event, and the tape should be of an appropriate color if possible.
Taping of body ~~joints~~ seams is not allowed."

2021-12-01 GT3 31032 correction to weight

#31525 from Grand Touring Committee · Rule change · TB 21-12 (2021-12 Fastrack)

In GT3 Spec Lines, Engines - Volkswagen, “Fun Cup” Beetle Sealed, change weight as follows:
"~~2060~~ 1850"

2021-12-01 GT3 Add TCR cars to GT3

#31540 from Grand Touring Committee · Rule change · TB 21-12 (2021-12 Fastrack)

In GT3 Spec Lines, classify TCR cars as follows:
GT3-TCR
Make Model Trans Power Level Weight (lbs) Notes
Audi RS3 LMS
(2016-2020)
SEQ 100% 3175 Must use 200 tread wear tires
Audi RS3 LMS
(2016-2020)

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DSG 100% 3100 Must use 200 tread wear tires
Honda Civic Type R
(2016-2020)
SEQ 100% 3200 Must use 200 tread wear tires
Hyundai I30N
(2016-2020)
SEQ 100% 3200 Must use 200 tread wear tires
Volkswagen Golf GTI
(2016-2020)
SEQ 100% 3175 Must use 200 tread wear tires
Volkswagen Golf GTI
(2016-2020)
DSG 100% 3100 Must use 200 tread wear tires

2022-01-01 F5 Data Box Mounting Plate

#31638 from Glen Thielke · Rule change · TB 22-01 (2022-01 Fastrack)

addedF5 cars must install AIM part #X47KPFSOLO2R0 data box mount for Majors and Runoffs.

As printed in Fastrack

In F5, GCR section 9.1.1.D, add a new section as follows:
"19. All F5 cars competing in Majors Races and the Runoffs must have the AIM part #X47KPFSOLO2R0 data box mount installed
on the vehicle to provide the necessary mounting of the AIM Solo or Solo 2 data box. The mounting surface is to be approximately
oriented either horizontally or vertically either parallel or perpendicular to the longitudinal axis of the car and must be accessible
from the exterior of the car with the driver on board -- it should have a view of the sky and not be located under carbon fiber or
metallic bodywork. Sufficient space should be left between the mounting plate and the surface to which it is attached to permit
the use of zip ties/tie straps to restrain the data box to the mounting plate. The purpose of this requirement is to allow the
random placement of data boxes on cars on pre-grid by SCCA assigned personal and the collection of the box when the car exits
the race track. Contact AIM and their distributors for direct purchase."

2022-02-01 GT3 Request to add Fiat to GT3 CARS

#31803 from Daniel Snow · Rule change · TB 22-02 (2022-02 Fastrack)

In GT3 Spec Lines, classify Fiat Spider 2000, Years 79-81, as follows:
GT3 Cars - FIAT
Model Years Body Style Drive-line Wheel-base (in) Notes
Fiat Spider 2000 79-81 RWD 89.76”

2022-02-01 GT3 Request to add Fiat to GT3 CARS

#31804 from Daniel Snow · Rule change · TB 22-02 (2022-02 Fastrack)

In GT3 Spec Lines, classify Fiat X-19, Years 72-89, as follows:
GT3 Cars -
Model Years Body Style Drive-line Wheel-base (in) Notes

Cal Club 2022 → Cal Club 2023 2022-02-17 to 2023-02-24

2022-03-01 GT3 Request to Classify Ginetta G40 in GT3

#31598 from Richard Gray · Rule change · TB 22-03 (2022-03 Fastrack)

In GT3 Cars - Ginetta, classify Ginetta G40 as follows:
GT3 Cars - GINETTA
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ginetta G40 2010-

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Present
2 Door Coupe RWD 88.6 Must comply with all GT3 rules except as
noted on spec line. May use FIA roll cage.
Must have complete build specs in
possession at all race events.
In GT3 Engines - Ginetta (Ford/Mazda), as follows:
GT3 Engines – GINETTA (Ford/Mazda)
Engine Family Bore x Stroke (mm) Disp.
(CC)
Head Type Valves
/ Cyl.
Fuel
Induction
Weight (lbs) Notes

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

2022-03-01 GT3 Normally Aspirated 2.0L DOHC MZR Motor

#31733 from Michael Heintzman · Rule change · TB 22-03 (2022-03 Fastrack)

In GT3 Engines, classify MAZDA MZR as follows:

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

2022-03-01 GT3 Volvo S60 in GT3

#31970 from Sam Moore · Rule change · TB 22-03 (2022-03 Fastrack)

In GT3 Cars - Volvo, classify Volvo S60 as follows:
GT3 Cars - VOLVO
Model Years Body Style Drive-line Wheel-base (in) Notes
Volvo S60 2000-2009 4 Door Sports
Coupe
FWD 106.9

2022-03-01 GT3 GT3 2.0L 4V engines now unrestricted.

#32190 from Grand Touring Committee · Rule change · TB 22-03 (2022-03 Fastrack)

In GT3 Engines Spec Lines, add to Notes the following:
Acura F20C 1997cc: "May run unrestricted at 2195 lbs."
Acura K20A 1998cc: "May run unrestricted at 2195 lbs."
Audi 1984cc: "May run unrestricted at 2195 lbs."
BMW 1895cc: "May run unrestricted at 2195 lbs."
Chevrolet 1998cc: "May run unrestricted at 2195 lbs."
Chrysler/Dodge/Plymouth 1997cc: "May run unrestricted at 2195 lbs."
"Ginetta 1999cc: May run unrestricted at 2195 lbs."

Show 8 more lines

Honda F20C 1997cc: "May run unrestricted at 2195 lbs."
Honda K20A 1998cc: "May run unrestricted at 2195 lbs."
Mazda 1999cc: "May run unrestricted at 2195 lbs."
Mitsubishi/Eagle 1997cc: "May run unrestricted at 2195 lbs."
Nissan QR25DE/DD 1998cc: "May run unrestricted at 2195 lbs."
Nissan SR20-DE/VE: "May run unrestricted at 2195 lbs."
Saab 1985cc: "May run unrestricted at 2195 lbs."
Volkswagen1984cc: "May run unrestricted at 2195 lbs."

2022-03-01 GT3 TB correction to wing wording

#32191 from Grand Touring Committee · Rule change · TB 22-03 (2022-03 Fastrack)

In GCR, Section 9.1.2.F.7.b.12.E., change the following:
"A single element, single plane airfoil ~~scaled~~ up to a maximum chord length of 10.75 inches."

2022-03-01 F5 E&O class name

#32194 from Formula/Sports Racing Committee · Rule change · TB 22-03 (2022-03 Fastrack)

addedF500 Majors and Runoffs cars must install AIM part #X47KPFSOLO2R0 data box mount for Solo or Solo 2.

As printed in Fastrack

In F500, GCR section 9.1.1.D.19, change as follows:
"All F500 cars competing in Majors Races and the Runoffs must have the AIM part #X47KPFSOLO2R0 data box mount installed
on the vehicle to provide the necessary mounting of the AIM Solo or Solo 2 data box."

2022-04-01 GT3 GT3 TCR Car Feedback

#31677 from Tim Myers · Rule change · TB 22-04 (2022-04 Fastrack)

In GT3 Spec Lines, GT3-TCR, change as follows:
Make/Model Audi RS3 LMS (2016-2020) SEQ:
Power Level: "~~100%~~ 90%"
Weight: "~~3175~~ 3177"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
Make/Model Audi RS3 LMS (2016-2020) DSG:
Power Level: "~~100%~~ 90%"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."

Show 15 more lines

Make/Model Honda Civic Type R (2016-2020):
Power Level: "~~100%~~ 90%"
Weight: "~~3200~~ 3210"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
Make/Model Hyundai I30N (2016-2020):
Power Level: "~~100%~~ 90%"
Weight: "~~3200~~ 3254"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
Make/Model Volkswagen Golf GTI (2016-2020) SEQ:
Power Level: "~~100%~~ 90%"
Weight: "~~3175~~ 3177"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."
Make/Model Volkswagen Golf GTI (2016-2020) DSG:
Power Level: "~~100%~~ 97.5%"
Notes: "Must use 200 tread wear tires. No tire shaving permitted. Stock TCR wheels only."

2022-05-01 GT3 wheel size addition

#32247 from Grand Touring Committee · Rule change · TB 22-05 (2022-04 Fastrack)

In Grand Touring Category Specifications, GCR Section 9.1.2.F.10.b, change as follows:
"The maximum wheel size for GT3 cars is 15 x 7”. Alternatively: GT3 cars may run up to a maximum 17" x 9" wheel with a weight
penalty equal to three (3) percent of the car's weight as listed on the specification line. The maximum vehicle weight shall be
rounded to the nearest pound.
~~Alternatively, a~~ Additionally: Any wheel up to 18” with a maximum tire cross section of 12.0” and a maximum tire diameter of
26.0” may be used with a weight penalty equal to ~~eight~~ five (5) percent of the car’s weight as listed on the specification line. The
minimum vehicle weight shall be rounded to the nearest pound. A maximum brake rotor diameter of 13.0” may be used with
alternate wheels. Cars using 15” American Racer 23.5- 10.0-15, bias ply, non-belted tire may do so without the weight penalty."

2022-06-01 GT3 Correct Fiat Spider Years

#32149 from Daniel Snow · Rule change · TB 22-06 (2022-06 Fastrack)

In GT3 Cars - FIAT Spec Lines, classify 124 Spider Pinnafarina Spider as follows:
GT3 Cars - FIAT
Model Years Body Style Drive-line Wheel-base (in) Notes

2022-06-01 F5 593 carb boot availability and oil pump clarification

#32527 from CARL WASSERSLEBEN · Rule change · TB 22-06 (2022-06 Fastrack)

wordingF500 Rotax 593 intake boot options clarified; oil injection pump removal now permitted.

As printed in Fastrack

In F500, GCR section 9.1.1.D.14.A, change as follows:
"Carburetor mounting ~~shall~~ must be of individual runners, with no balance pipes, and no plenums unless fitted as standard as on
the Rotax 493 and 593 engines. The use of the intake plenum/resonator on the 493 and ~~the~~ 593 engines is optional. If the intake
resonator is removed the resulting holes MUST be completely plugged and the plugs must be held in place by appropriate
clamps. Plugs may be of any material and must serve no other purpose than to plug the holes originally intended for the
resonator. 38mm intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 (last 6 digits
867862 are embossed on the boot), or Kimpex 07-100-33, or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-
2 ~~shall~~ must be used for the 493 and 593 non-HO engines. 38mm intake boots, BPP 420867882 (last 6 digits 867882 are
embossed on the boot) or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-2 ~~shall~~ must be used for the 2003 593 HO
engine, and 38mm intake boots, BPP 420867879 (last 6 digits 867879 are embossed on the boot) or Moto Tassinari V-Force 3
Reed Valve System V3124-873B-2 ~~shall~~ must be used for the 2004-2007 593 HO engines. Supercharging, turbocharging, and
direct fuel injection are prohibited."
In F500, GCR section 9.1.1.D.14, add a new section as follows:
"M. The stock oil injection pump, oil lines, and control cables may be removed from all Rotax engines. The oil injection ports may
be removed and plugged as necessary."

2022-06-01 FE Update FE/FE2 Tire Rule

#32613 from Robey Clark · Rule change · TB 22-06 (2022-06 Fastrack)

wordingFE tires must be run as delivered in sets of 4.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.M, change as follows:
"Tires must be run as delivered in sets of 4 as stated below:"

2022-06-01 SRF SRF Tire Rule Update

#32614 from Robey Clark · Rule change · TB 22-06 (2022-06 Fastrack)

In SRF, GCR section 9.1.8.D.1.X.f, change as follows:
"Tires: must be run as delivered."

2022-06-01 FE Master cylinder clarification

#32669 from Club Racing Board · Rule change · TB 22-06 (2022-06 Fastrack)

wordingFE master cylinders clarified: Girling front .700" piston WM802005, rear .750" piston WM802006.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.K.c, change as follows:
"Master cylinders ~~must be the Girling type~~:
Girling F front master cylinder is .700" piston diameter, Part # WM802005
Girling R rear master cylinder is .750" piston diameter, Part # WM802006"

2022-06-01 SRF Brake, seal, and air filter clarifications

#32670 from Club Racing Board · Rule change · TB 22-06 (2022-06 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 be used as delivered with no
machining of any kind. Minimum thickness ~~13.25~~ 12.20mm (~~0.522~~ 0.481"). The 1985 Renault Alliance solid front rotor (Reference:
Bendix PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type
rotor. Rubber caliper bushings may be replaced with bronze bushings P/N 1196185 or P/N 1196185."
In SRF, GCR section 9.1.8.D.2.H, change as follows:
"No performance M modifications of any kind.
SCCA Enterprises’ seals shall be intact.

Show 3 more lines

(2) on cam cover, (2) on the oil pan, (1) on ~~the~~ each cam shaft. ~~Automatic Drivetrain Violation if removed.~~"
In SRF, GCR section 9.1.8.D.2.H.23, change as follows:
"Air Filter: P/N WM301020 or K&N RC-9160"

2022-07-01 F5 Clarify stepped exhaust header references

#32743 from Club Racing Board · Rule change · TB 22-07 (2022-07 Fastrack)

wordingF500 clarifies stepped diameter exhaust headers prohibited except at cylinder head flange area.

As printed in Fastrack

In F500, GCR section 9.1.1.D.15.G, add the following:
"The exhaust system and exhaust manifold are unrestricted, within SCCA safety regulations, except that
stepped diameter exhaust headers are not allowed. This prohibition does not include the exhaust flange area immediately
adjacent to the cylinder head."
In F500 Engine Table, Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 spec lines, add the following:
"Stepped diameter exhaust headers are not allowed"

2022-07-01 GT3 Correct Model GT3 - Fiat

#32776 from Club Racing Board · Rule change · TB 22-07 (2022-07 Fastrack)

In GT3 Spec Lines, Cars - Fiat, change model as follows:
"124 Spider ~~Pinnafarina~~ Pininfarina ~~Spider~~"

2022-08-01 GT3 SR20VET Engine Option Request

#32648 from David Muramoto · Rule change · TB 22-08 (2022-08 Fastrack)

In GT3 Engines, Nissan, classify SR20VET Limited Prep-Turbocharged OEM Engine as follows:
GT3 Engines - NISSAN
Engine Family Engine

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

2022-08-01 F5 Ensure availability of ECU for Rotax engines

#32695 from Carl Wassersleben · Rule change · TB 22-08 (2022-08 Fastrack)

added · engineF500 Rotax engines now permit Ingi Tech Sparker ignition DCP-CDI-P2 as alternate ECU.

As printed in Fastrack

In F500, GCR section 9.1.1.D.14, add a new section as follows:
"N. Alternate ECU for Rotax engines: The use of the Ingi Tech Sparker ignition part number DCP-CDI-P2 is permitted."

2022-09-01 GT3 Tail lights on all GT category race cars.

#32799 from John Mills · Rule change · TB 22-09 (2022-09 Fastrack)

wordingGT1, GT2, GT3, GTL, GTX tail lights may now be original style or custom panel graphic with functioning red LED brake lamps.

As printed in Fastrack

In GT, GCR Section 9.1.2.F.7.a.6:
"Glass and/or plastic headlights, front parking lights, front signal lights, lenses, and bulbs shall be removed. Headlight openings
shall be covered with a wire mesh screen or panel having the same contour as the original lens, mounted so that the headlight
bezel/rim remains in place, maintaining the standard appearance of the Production automobile. Side marker light assemblies
shall be removed and the resulting openings covered with a plate whose dimensions do not exceed those of the original parts;
side marker lights that are an integral part of the taillight assembly cannot be removed. Other lighting parts and operating
mechanisms may be removed. In the case of pop-up headlights, the entire assembly may be removed and the opening covered
with a screen or plate (as above, without the headlight bezel/rim requirement) which provides a stock appearance. It is not
permitted to relocate the standard headlight, parking light, signal light, etc., openings. Traditional GT cars only. Not allowed with
any "Spec Car, GT2-ST, or any other added non Traditional GT car. Taillights shall be in the original location and ~~shall~~ may be the
original style/type of taillight for the make, model, and year of car. A rear body panel having the same contour as the original
lens area and in the original location, may be fitted with a tail-light graphic of the original style/type frame/lens adhered to it. If
side marker lights are an integral part of the tail-light assembly they must be represented by the panel graphic. These
panel/graphics shall have a functioning red LED lamp assembly fitted through them on both sides of the car to serve as brake
lights. A 15-watt or equivalent rain light may be included with-in this LED assembly or may be a separately mounted single or
dual LED assembly."

2022-09-01 FE Engine Heat Shield & Insulation

#33019 from Robey Clark · Rule change · TB 22-09 (2022-09 Fastrack)

addedFE engine heat shield and insulation between block and exhaust now permitted to protect fuel cell, filter, rail, lines.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.G.a.17, change as follows:
"A heat shield and heat insulation material may be used between the engine block and the exhaust system and is recommended
for the purpose of protecting hoses, shifter cable, and wiring from the heat of the engine and exhaust. Heat insulation material
may also be used to protect the fuel cell, fuel filter, fuel rail, and fuel lines."

2022-09-01 F5 Intake Boots Correction

#33028 from Formula/Sports Racing Committee · Rule change · TB 22-09 (2022-09 Fastrack)

wordingF500 Rotax 493 and 593 intake boots: removed Moto Tassinari V3124-873B-2 from 493/593 non-HO allowance, added Moto Tassinari V3120-794A-2 option for non-HO.

As printed in Fastrack

In F500, GCR section 9.1.1.D.14.A, change as follows:
“Carburetor mounting must be of individual runners, with no balance pipes and no plenums unless fitted as standard as on the
Rotax 493 and 593 engines. The use of the intake plenum/resonator on the 493 and 593 engines is optional. If the intake
resonator is removed the resulting holes MUST be completely plugged and the plugs must be held in place by appropriate
clamps. Plugs may be of any material and must serve no other purpose than to plug the holes originally intended for the
resonator. ~~38mm i~~ Intake boots, BPP 420867860 (last 6 digits 867860 are embossed on the boot), BPP 420867862 1 (last 6 digits
867862 1 are embossed on the boot), or Kimpex 07-100-33, ~~or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-2~~ must
be used for the 493 and 593 non-HO engines. Moto Tassinari V-Force V3120-794A-2 Reed Valve System may be used with any
allowed intake boot on the 493 and 593 non-HO engines. ~~38mm i~~ Intake boots, BPP 420867882 (last 6 digits 867882 are
embossed on the boot) or Moto Tassinari V-Force 3 Reed Valve System V3124-873B-2 must be used for the 2003 593 HO engine,
and ~~38mm i~~ ntake boots, BPP 420867879 (last 6 digits 867879 are embossed on the boot) or Moto Tassinari V-Force 3 Reed Valve
System V3124-873B-2 must be used for the 2004-2007 593 HO engines. Supercharging, turbocharging, and direct fuel injection
are prohibited.”

2022-10-01 GT3 GT3 Turbo Displacement Clarification

#32952 from Chris Edens · Rule change · TB 22-10 (2022-10 Fastrack)

In GT Category Specifications, GCR Section 9.1.2.E.13.l.3., change Engine Displacement (cc) as follows:
"1401-1800 50"

2022-10-01 FE Brake bias adjuster clarification

#33084 from Robey Clark · Rule change · TB 22-10 (2022-10 Fastrack)

added · suspension & brakesFE drivers may now adjust brake bias manually during the race.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.K, add the following:
"f. Driver adjustable manual brake bias is allowed."

2022-10-01 FE FE Front and Rear Wing Update & Clarification

#33089 from Robey Clark · Rule change · TB 22-10 (2022-10 Fastrack)

wordingFE front and rear wing specifications clarified: adjustment ranges, shimming, Gurney flap sizes, mounting hardware, and measurement references refined.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.F.g, change as follows:
"The front wing ~~main plane, front wing secondary elements, front wing support mounts, and front wing endplates~~ assembly and
its related mounting components must be used ~~and mounted~~ as delivered ~~from Enterprises~~. ~~Any m~~ Modifications ~~to these parts~~,
except as specifically noted ~~herein~~, ~~is strictly forbidden~~ are prohibited. The front main ~~wing plane angle is zeroed on the rear~~
~~upper aft transmission surface measured with a suitable angle gauge, i.e.: digital level on the top main plane 2 inches outward~~
~~from the nose box mounts~~ element may be adjusted +2.5 to -0.5 degrees. ~~It must meet a minimum measurement of negative .5~~
~~degrees (angled down in the back) and a maximum measurement of positive 2.5 degrees (angled up in the back). It is acceptable~~
~~to shim the main plane to obtain this measurement.~~ Shimming 2 of the 4 verticals through the main element mounting points to
achieve adjustment range is allowed. The main element angle is measured relative to the reference plane. The main element is
checked on the upper surface, midway between the vertical mounting and outer secondary elements on both sides. Note: The
reference plane is the machined surface where the shock clevises are attached to the transmission case. Secondary wing
elements may be used in any of the provided adjustment holes. Gurney flaps (0.500" +/- 0.030") are ~~permitted~~ allowed as an
option ~~for installation on the trailing edge upper surface of the front wing~~ on secondary elements only~~, not the wing main~~
~~plane~~. ~~They~~ Gurney flaps must be securely attached ~~in a secure fashion, without modification to the wing element except for~~
~~mounting hardware. Only .500” +/- .030” flaps are allowed. Maximum number of mounting locations on front flaps is 2 on each~~
~~flap and maximum hardware size is~~ with two #8 ~~(.156)~~ hardware or tape. Gurney flaps~~, where attached, shall be~~ are bent or
formed 90 degrees to have a sharp inner radius~~and parallel to the upper surface of the wing element and~~. ~~no t~~ Tapered or "saw-
toothed" Gurneys flaps are not permitted. Gurney flaps are measured for total height as mounted from the upper surface of the
element."
In FE, GCR section 9.1.1.I.2.F.h, change as follows:
"The rear wing assembly and its related mounting components ~~are to~~ must be used ~~and mounted~~ as delivered. ~~Any~~
m Modifications, except as specifically note~~dherei~~ n, are ~~strictly~~ prohibited. The lower ~~plane angle, zeroed on the rear upper aft~~
~~transmission surface, measured with a suitable angle gauge. i.e.; digital level on the top surface of the lower rear wing must~~
~~meet a minimum of –3.0 degrees (angled down in the back) and a maximum of +2.0 degrees (angled up in the back). It is~~
~~acceptable to adjust the lower rear element to meet these requirements~~ element may be adjusted +2.0 to -3.0
degrees. Chamfering the upper inner corners of the wing mounting brackets to achieve the adjustment range is allowed. The
element angle is measured relative to the reference plane. The element is checked on the top surface, near the center, without a
Gurney flap. Note: The reference plane is the machined surface where the shock clevises are attached to the transmission
case. The upper ~~rear wing~~ element may ~~only~~ be adjusted within the ~~parameter~~ profile of the wing endplate~~s and wing adjusters~~
~~as provided from Enterprises~~ using any of the provided adjustment holes. ~~No additional holes may be added.~~ Gurney
flaps (0.250" +/- 0.030") are ~~permitted~~ allowed as an option~~for installation on the trailing edge upper surface of the~~ on one or
both wing elements. ~~They~~ Gurney flaps must be securely attached ~~in a secure fashion, without modification to the wing element~~
~~except for mounting hardware. Only .250” +/- .030” flaps are allowed on one or both elements~~ with five #8 hardware or
tape.~~The~~ Gurney flaps ~~only, may extend beyond the parameters of the end plate~~ are bent or formed 90 degrees to have a sharp
inner radius. ~~Maximum number of mounting locations is 5 and maximum hardware size is #8 (.156). Gurney flaps, where degrees~~
~~and parallel to the upper surface of the wing element and no t~~ Tapered or "saw-toothed"
Gurneys flaps are not permitted. Gurney flaps are measured for total height as mounted from the upper surface of the element."

2022-11-01 GT3 Add 84-87 Civic

#33091 from James Rogerson · Rule change · TB 22-11 (2022-11 Fastrack)

In GT3 Spec Lines, HONDA GT3 Cars, add as follows:
HONDA
GT3 Cars -
Model Years Body Style Drive-line Wheel-base (in) Notes
Civic 84-87 3dr FWD 86.6 Hood bulge allowed, no openings.

2022-12-01 GT3 Turbocharged Engine Rules

#33145 from Michael Heintzman · Rule change · TB 22-12 (2022-12 Fastrack)

In GT3 Engines - Mazda Spec Lines, Mazda BP4W Turbocharged OEM engine, add the following:
GT3 Engines - Mazda

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

2022-12-01 GT3 GT2 (TA2)/GTA Part Number Update

#33315 from Butch Kummer · Rule change · TB 22-12 (2022-12 Fastrack)

wordingGT2 TA2 and GTA throttle body part numbers updated to GM 12570790 or Edelbrock 33869/3870.

As printed in Fastrack

In GCR Appendix L-TA2 rules, Addendum A, change A.2. as follows:
"The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or
#3870."
In GTA, GCR Section 9.1.2.G.3., change as follows:
"The throttle body must be either a GM 90mm, electronic, part #1257 → 0790, or Edelbrock 90mm, mechanical, part 33869 or
#3870."

2022-12-01 GT3 GT3 Nissian SR20VET unrestricted ECU change

#33432 from Grand Touring Committee · Rule change · TB 22-12 (2022-12 Fastrack)

In GT3 Engines Spec Lines, SR20VET Limited Prep-Turbocharged OEM Engine, change as follows:
Fuel Induction: "TURBO w/ 33mm TIR"
Notes: "Garrett G~~T2560LS~~ GT2860RS Turbo only. ~~OEM “stock” ECU only.~~ ECU is open."

2023-01-01 GT3 Remove Nissan VG30 engine from GT3

#33609 from Grand Touring Committee · Rule change · TB 23-01 (2023-01 Fastrack)

In GT3 Spec Lines, Engines - NISSAN, VG30, remove Spec Line in its entirety.

2023-01-01 GT3 GT3 Choke option effective 1-01-2023

#33669 from Grand Touring Committee · Rule change · TB 23-01 (2023-01 Fastrack)

In GT2, 3, LITE Category Specifications, GCR Section 9.1.2.F.13.m., add the following:
" For GT3 only:
1. 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.
This option is for normally aspirated cars with SIRs only and does not apply to turbo cars with TIRs."

2023-01-01 GT3 GT3 2.0L choke/weight option

#33670 from Grand Touring Committee · Rule change · TB 23-01 (2023-01 Fastrack)

In GT2, 3, LITE Category Specifications, GCR Section 9.1.2.F.13.m., add the following:
“2. All 2.0 liter 4-valve non-turbo engines currently listed in GT3 shall be permitted to run without any restriction (SIR or chokes)
at 2060lbs.”

Cal Club 2023 → Cal Club 2024 2023-02-24 to 2024-02-23

2023-03-01 SRF Update SRF Brake Rule

#33469 from Robey Clark · Rule change · TB 23-01 (2023-01 Fastrack)

In SRF, GCR section 9.1.8.D.X.g, change as follows:
"Brakes: Hawk Blue 9012 pads P/N 801993 must be used. Wilwood vented rotor P/N 800065 shall be used as delivered with no
machining of any kind. Minimum thickness 12.20mm (0.481"). ~~The 1985 Renault Alliance solid front rotor (Reference: Bendix~~
~~PRT1318 or Centrix 121.11004) may be used on front, rear, or both axles, but each axle must be paired to the same type~~
~~rotor.~~ The Renault Alliance solid front rotors may not be used. Rubber caliper bushings may be replaced with bronze bushings P/N
1196185 or P/N 1196185. Original caliper pistons may be replaced with vented caliper piston P/N 1196184; no other
modification allowed. Wilwood caliper with bracket universal fit P/N 800038 may be used as delivered with no modification of
any kind. Wilwood knock back spring (2.63 lbs.) P/N 800045 may be used as delivered with no modification of any kind;

Show 4 more lines

maximum of one spring per caliper."
P2 Engine Table
Spec
Line Engine Series

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

2023-04-01 FE Update FE SADEV Transmission Rule

#33883 from Robey Clark · Rule change · TB 23-04 (2023-04 Fastrack)

wordingFE SADEV transmission rule removes note that all ratios under review and could be updated prior to sealing.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.G.b.4.b, change as follows:
"~~(All SADEV ratios are under review and could be updated prior to sealing date)~~"

2023-05-01 GT3 Please classify Fields Cardinal V8

#33784 from James Rogersn · Rule change · TB 23-05 (2023-05 Fastrack)

addedFields Cardinal V8 added to GT1 with Ford V8 engine, 4.9L, 2100 lbs, fuel injection.

As printed in Fastrack

In GT Spec Lines, GT1 Cars - Fields Cardinal, classify Fields Cardinal V8 as follows:
GT1 Cars – Fields Cardinal
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Fields Cardinal V8 2023 2 Dr. RWD 92.0 Roll Cage MUST be modified to comply with
GCR Section 9.4.
In GT Spec Lines, GT1Engines - classify Ford V8 as follows:
GT1 Engines - Ford
Engine
Family
Engine Type Bore x

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)

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

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

#34189 from Robey Clark · Rule change · TB 23-06 (2023-06 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."

2023-08-01 GT3 Addendum to letter 33913, GT3 DOT tires.

#34627 from Grand Touring Committee · Rule change · TB 23-08 (2023-05 Fastrack)

In GCR section 9.1.2.F.7.c.10.b, add the following:
"Any racing tire including DOT is allowed in GT3. Cars using 15” American Racer 23.5-10.0-15, bias ply, non-belted tire may do so
without the weight penalty."

2023-10-01 GT3 Classify Honda B20 engine in GT3 CRX

#34781 from Taz Harvey · Rule change · TB 23-10 (2023-10 Fastrack)

In GT3 Engines - HONDA, classify B20 as follows:
GT3 Engines - HONDA

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

2023-10-01 SRF SRF Radiator Rule Update

#34805 from Robey Clark · Rule change · TB 23-10 (2023-10 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."

2023-11-01 GT3 GT3 TCR 200 TW tires

#34993 from Grand Touring Committee · Rule change · TB 23-11 (2023-11 Fastrack)

In GT3 Spec Lines, GT3-TCR, change Notes as follows:
Audi RS3 LMS (16-20) @ 3170 lbs: "Must use ~~200 tread wear~~ any DOT tires. No tire shaving permitted. Stock TCR wheels only."
Audi RS3 LMS (16-20) @ 3100 lbs: "Must use ~~200 tread wear~~ any DOT tires."
Honda Civic Type R (16-20): "Must use ~~200 tread wear~~ any DOT tires."
Hyundai 130 N (16-20): "Must use ~~200 tread wear~~ any DOT tires."
Volkswagen Golf GTi (16-20) @ 3177 lbs: "Must use ~~200 tread wear~~ any DOT tires."
Volkswagen Golf GTi (16-20) @ 3100 lbs: "Must use ~~200 tread wear~~ any DOT tires."

2023-12-01 GT3 Errors in GTCS Headings and Use of the Terms Category and ClassChange existing GTL and GTA Rules

#34453 from David Gomberg · Rule change · TB 23-12 (2023-12 Fastrack)

wordingGTL spec lines moved contiguous with GT2 and GT3; GTA category and specs renumbered behind GTL; P2 engine tables reorganised with restrictor and weight specifications clarified.

As printed in Fastrack

from the current (or before) Table of Contents (TOC), to what is shown in the after TOC.
GTL spec lines will now be contiguous with GT2 and 3 spec lines.
GTA category and spec lines will be moved and renumbered behind GTL. GTA Section will not change but page numbers will, (as
shown in Red italics).
9.1.2.F. GT-2, 3, LITE Category Specifications 314
GT2 Cars 327
GT2/ST 341
GT3 Cars 348
GTL Cars 364
GTA Cars 377
P2 Engine Table B.1
2010 and older
Stock Kawasaki
38.5mm
minimum width 52 inches. AMAC-AM5:
minimum width 54 inches.
P2 Engine Table B.1
2008 and older
Stock ~~Engine~~ 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 37mm
P2 Engine Table B.2 Not required
P2 Engine Table B.3 39mm
Stock Engine
1050 lbs.

2023-12-01 GT3 Toyota Engine Classification Request

#35019 from warren Montague · Rule change · TB 23-12 (2023-09 Fastrack)

In GT3 TOYOTA Engines, classify Toyota 3S as follows:
GT3 TOYOTA Engines -

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

2023-12-01 GT3 GT3 2.0L SIR & weight

#35171 from Grand Touring Committee · Rule change · TB 23-12 (2023-09 Fastrack)

In GT3 Spec Lines, GT3 Cars, change as follows:
"Acura F20C 1997cc ~~32mm SIR May run unrestricted at 2195lbs~~.
K20A 1988cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Audi 1984cc ~~32mm SIR May run unrestricted at 2195lbs.~~
BMW 1895cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Chevrolet 1998cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Chrysler/Dodge/Plymouth 1997cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Ginetta MZR 1999cc ~~32mm SIR May run unrestricted at 2195lbs.~~

Show 7 more lines

Honda F20C 1997cc ~~32mm SIR May run unrestricted at 2195lbs.~~
K20A 1988cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Mazda MZR 1999cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Mitsubishi/Eagle 1997cc ~~32mm SIR May run unrestricted at 2195lbs.~~
Nissan QR25DE/DD 1988cc ~~32mm SIR May run unrestricted at 2195lbs.~~
SAAB 1985cc ~~32mm SIR May run unrestricted at 2195lbs.~~
VOLKSWAGON 1984cc ~~32mm SIR May run unrestricted at 2195lbs.~~

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

#34706 from Robey Clark · Rule change · TB 23-09 (2023-09 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 FE Update FE Rain Light Rule

#34707 from Robey Clark · Rule change · TB 23-09 (2023-09 Fastrack)

wordingFE rain light now must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.N.f, change as follows:
"~~Any rain light is allowed.~~ Effective 1/1/2024, a rain light that meets FIA Standard 8874-2019, Technical List No. 76, is required as
specified in GCR section 9.3.32.B.2."

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

#34853 from Robey Clark · Rule change · TB 23-10 (2023-10 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 GT3 Disenfranchised GT2 RX7.

#35028 from Richard Smith · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Spec Lines, reduce all disenfranchised GT2 cars from ~~150 lbs~~ to 75 lbs.GT3 MAZDA: Body: RX7 NA 2 DR. RWD 95.3 /
95.5 / 95.7 SP – Please review and provide appropriate layout for GCR.
In GT3 Spec Lines, Engines - MAZDA, add to Notes as follows:
12A Peripheral Port at 2300 lbs.: "Disenfranchised GT2* add 75 lbs."
13B Bridgeport: "Disfranchised GT2 add 75 lbs."
13B Peripheral Port: "Disfranchised GT2 add 75 lbs."

2024-01-01 GT3 Turbo Help

#35042 from Chris Edens · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Engines - Mazda Spec Lines, Mazda BP4W Turbocharged OEM engine, change Weight as follows:
"~~2060~~ 1960"

2024-01-01 GT3 Competition Adjustment Request for 13B Peripheral Port

#35100 from Richardo Hollingshead · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Engines - MAZDA Spec Lines, 13B Peripheral Port, change Weight as follows:
"~~2200~~ 2100"

2024-01-01 GT3 Request to Include Toyota GR 86 in GT3

#35197 from Erik Madsen Madsen · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Cars - TOYOTA Spec Lines, classify DR86 as follows:
GT3 Cars - TOYOTA
Model Years Body Style Driveline Wheelbase (in) Notes
DR86 2021-2024 2 DR RWD 101.3

2024-01-01 GT3 Fastrack Toyota 3S Correction

#35258 from warren Montague · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Engines - Toyota, 3S, change as follows:
Bore: "~~84.2~~ 86.0"
Stroke: "~~90.1~~ 86.0"

2024-01-01 SRF SRF / SRF3 Rule Updates

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

Show 23 more lines

"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 FE FE/FE2 rule update

#35269 from Robey Clark · Rule change · TB 24-01 (2024-01 Fastrack)

wordingFE allows racer's tape for crash repair, panel security, and heat exchanger opening control; seam taping banned.

As printed in Fastrack

In FE, GCR section 9.1.1.I.2.P.c, add the following:
"Racer's tape may be used to repair crash damage, or as a precautionary means of securing the body panels or
retaining l~~atches~~ fasteners only. Crash-damage is defined as having occurred during the current event, and the tape should be of
an appropriate color if possible. Taping of body seams is not allowed. Taping across heat exchanger openings as a way to control
temperature is allowed and may serve no other purpose."

2024-02-01 GT3 Request to Include Toyota FA24D Engine for use in GT3

#35199 from Erik Madsen Madsen · Rule change · TB 24-02 (2024-02 Fastrack)

In GT3 Engines - Toyota, classify the FA24D as follows: see attachment
GT3 Engines - TOYOTA

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

2024-02-01 GT3 Rear Blade Spoiler Clarification

#35261 from Butch Kummer · Rule change · TB 24-02 (2024-01 Fastrack)

aeroGT1-GTX rear blade spoiler: angle 50–75°, max 59.0 wide by 5.0 high inches; total area limit removed.

As printed in Fastrack

In GCR Section 9.1.2.G (GTA Category Specifications), change as follows:
“9.1.2.G.III.I
The single-plane rear spoiler must be mounted at an ~~angel~~ angle from 50 to 75 degrees (perpendicular to the ground
being 90 degrees) and may not extend beyond the rear bumper when viewed from directly above the rear
bumper. Spoilers must be a minimum of .063 aluminum or Lexan and may vary in overall height to match the contours
of the bodywork. The rear spoiler dimensions shall not exceed 59.0 inches wide by 5.0 inches in height, (measured on
the material surface) ~~, or 295.0 square inches total surface area.~~ Braces to prevent spoiler deflection are allowed, but
may serve no other purpose.”

2024-02-01 GT3 GT Direct Injection allowance and rules

#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 Fastrack)

added · engineGT1, GT2, GT3, GTL, GTX Direct Injection now permitted if original equipment.

As printed in Fastrack

In GCR, Section 9.1.2.F.7.5.E. change as follows:
“Direct Injection is ~~not~~ permitted only if it came OE and must be installed using only OE high pressure pump(s), hard and
soft hoses and injectors.”

2024-02-01 GT3 GT2/3 remove Direction Injection not allowed in Spec line notes

#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

added · engineGT2 Nissan and GT3 Mazda, Mitsubishi 4G93, Nissan QR25DE/DD, QE25DE/DD now permit Direct Injection per 9.1.2.F.7.5.E.

As printed in Fastrack

In GT2/3 modify Spec Line notes as follows:
GT2:
Nissan: “Direct Injection ~~not~~ permitted, may be used per 9.1.2.F.7.5.E.”
GT3:
Mazda: “Direct Injection ~~not~~ permitted, may be used per 9.1.2.F.7.5.E.”
Mitsubishi 4G93: “Direct Injection ~~not~~ permitted, may be used per 9.1.2.F.7.5.E. ”
Nissan QR25DE/DD 1988cc: “Direct Injection ~~not~~ permitted, may be used per 9.1.2.F.7.5.E.”
Nissan QE25DE/DD 2489cc: “Direct Injection ~~not~~ permitted, may be used per 9.1.2.F.7.5.E.”

2024-02-01 GT3 Edit GT3 Nissan QR25DE/DD spec line

#35442 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 Fastrack)

In GT3 Engines - Nissan QR25DE/DD, change as follows:
11111’QR25 0DE/DD”

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