FM + SRF + GTL at Buttonwillow Raceway Park

2021-03-01 GTL Request for Help for Mazda 12A

#29754 from Michael Lewis · Rule change · TB 21-01 (2021-01 Fastrack)

In GTL Engines - MAZDA, Spec Lines, 12A, change as follows effective 3/1/2021:
Fuel Induction: "27 29mm SIR"
Weight: "1950 2000"
Notes: "May use a 28mm SIR plus 175lbs."

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."

2021-06-01 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"

2021-07-01 GTL Request clarification for the Honda B18a,bVS B18c

#30482 from Joe Harlan · Rule change · TB 21-07 (2021-07 Fastrack)

In GTL Engines - HONDA, change Split B18 as follows:
GT Engines - HONDA
Engine Type Bore x
Stroke
(mm)
Disp.
(CC)
Head Type Valves / Cyl. Fuel Induction Weight (lbs) Notes

2021-07-01 GTL Request to Allow Hood Bulge on Nissan B13 Sentra

#30504 from Jameson Savage · Rule change · TB 21-07 (2021-07 Fastrack)

In GTL Spec Lines, Sentra (B13), add to Notes as follows:
"May have hood bulge (Max. of 1.5”H x 10.0” L x 6.0 W)"

2021-07-01 GTL Request BMW E21 Classing

#30582 from Jacob Lueder · Rule change · TB 21-07 (2021-07 Fastrack)

In GT Cars - BMW, add the following:
GT Cars - BMW
Model Years Body Style Drive-
line
Wheel-
base (in)

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

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

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

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

2021-10-01 GTL Request car classification

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

2021-12-01 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)"

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

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

#31599 from Richard Gray · Rule change · TB 22-03 (2022-03 Fastrack)

In GT Cars - Ginetta G40 as follows:
GTL Cars - GINETTA
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ginetta G40 2002-

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 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.

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

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

2022-11-01 GTL Engine Request

#33064 from Isaac Preston · Rule change · TB 22-11 (2022-11 Fastrack)

In GTL Spec Lines, Engines - TOYOTA, add as follows:

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

2022-12-01 GTL Fiat HP Limited Prep X1/9 Weight in GTL

#33297 from Larry Svaton · Rule change · TB 22-12 (2022-12 Fastrack)

In Gt Light Engines Spec Lines, 1500 Limited Prep (Engine & Chassis), change weight as follows:
"2000 → 1835"

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

#33315 from Butch Kummer · Rule change · TB 22-12 (2022-12 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 GTL Request to add Ford Festiva to GTL

#33335 from Jason Martin · Rule change · TB 22-12 (2022-12 Fastrack)

In GT Cars - GT Light Spec Lines, add Ford Festiva as follows:
GT Cars – GT Lite
Model Years Body Style Drive-
line
Wheel-
base (in)
Notes
Ford Festiva 1988-1993 3 Dr.

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

2023-01-01 GTL Toyota 4A-F and 4A-FE 1.6L DOHC 16V Engine Request

#33415 from Scott Schick · Rule change · TB 23-01 (2023-01 Fastrack)

In GT2 Spec Lines, Engines - Toyota, add the following Spec Line:
Engines - TOYOTA
Engine
Family
Engine Type Bore x

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

2023-02-01 GTL Toyota 4Y Engine Classification Request

#33562 from Scott Schick · Rule change · TB 23-02 (2023-02 Fastrack)

In GTL Spec Lines, Engines - Toyota, add to Notes as follows:
3K: "May use 4Y block only"
4K: "May use 4Y block only"
5K: "May use 4Y block only"

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;

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

2023-05-01 GTL Please classify Fields Cardinal V8

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

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."

2023-10-01 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 justified 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 GTL Weight for Nissan Sentra/200SX A 1400's

#34918 from Wilson Wright Jr · Rule change · TB 23-11 (2023-11 Fastrack)

In GTL Spec Lines, GTL Engines - NISSAN, Engine Family A14, change weight as follows:
"1850 1800"

2023-12-01 GTL 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)

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

2023-12-01 GTL Small Engines in GT Lite

#34842 from Peter Zekert · Rule change · TB 23-12 (2023-09 Fastrack)

In GCR, GTL Cars, create new sub chart as follows:
In GTL change weights for unrestricted engines under 1399cc as follows:
Alfa Romeo 1130cc 1605 1565
1290cc 1605 1565
1357cc 1605 1565
AMC/Renault 1289cc 1660 1619
Triumph Spitfire 1147cc 1530 1492
mini 1275cc 1570 1531

2023-12-01 GTL Request to Classify Honda Fit body in GTL

#35020 from Peter Zekert · Rule change · TB 23-12 (2023-09 Fastrack)

In GTL Honda Cars, classify Honda Fit as follows:
GTL HONDA Cars -
Model Years Body Style Drive-line Wheel-base (in) Notes
FIT 2009-13 2 Dr. FWD 99.0 Alternate wheel bases
94.0”
97.0”

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 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 GTL Rotary Engine 12A Rotor Housings

#35131 from Tony Rivera · Rule change · TB 24-01 (2024-01 Fastrack)

In GT3 Engines - Mazda Spec Lines, add to Notes as follows:
12A Street Port: "Contact National Office for specific details of various allowable port configurations. May machine and use 13B
housing to O.E. 12A spec’s."
12A Bridge Port: "Optional choke size 42mm @2010lbs. May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2150lbs: "May machine and use 13B housing to O.E. 12A spec’s."
12A Peripheral Port @ 2300lbs: "Disenfranchised GT2* May machine and use 13B housing to O.E. 12A spec’s."

2024-01-01 GTL Request to Include Toyota GR86 in GTL

#35198 from Erik Madsen Madsen · Rule change · TB 24-01 (2024-01 Fastrack)

In GTL Cars - TOYOTA Spec Lines, classify DR86 as follows:
GTL Cars - TOYOTA
Model Years Body Style Drive-line Wheel-base (in) Notes
DR86 2021-2024 2 DR RWD 101.3

2024-01-01 GTL Errors and Omissions, GTL engines & Cars

#35226 from Peter Zekert · Rule change · TB 24-01 (2024-01 Fastrack)

In GTL Cars - BMC thru Rover Group Spec Lines, BMW Mini, change Years as follows:
"2002-2013"

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:

2024-02-01 GTL Rear Blade Spoiler Clarification

#35261 from Butch Kummer · Rule change · TB 24-02 (2024-01 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 GTL GT Direct Injection allowance and rules

#35437 from Grand Touring Committee · Rule change · TB 24-02 (2024-01 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 GTL GT2/3 remove Direction Injection not allowed in Spec line notes

#35439 from Grand Touring Committee · Rule change · TB 24-02 (2024-02 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.”