P2 + FV + GTL at Buttonwillow Raceway Park

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

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

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

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

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

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

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 P2 Clarify minimum side body height requirement

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

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

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

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

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

2023-11-01 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”

2023-12-01 FV FV Wheel Bearing Clarification

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

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

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

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

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

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

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

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

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

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

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

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

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

2024-02-01 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.”

2024-05-01 GTL Request for Spec Line 1010 Reconsideration

#35009 from Kristofer Olson · Rule change · TB 24-05 (2024-05 Fastrack)

In GT2-ST Spec Lines, Acura NSX, change as follows:
Minimum Weight: "2700 3000"
Restrictor: "43 45mm TIR"

2024-05-01 GTL Allow 34 mm chokes for the Datsun 510

#35661 from James Bell · Rule change · TB 24-05 (2024-05 Fastrack)

In GTL Engines-NISSAN Spec Lines, change L16 (Limited Prep) as follows:
Fuel Induction: "32 34mm"
Weight: "1950 2000"

2024-05-01 P2 CN Spec ECU

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

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

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

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

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

2024-07-01 GTL Add GTL to GT3 choke option line.

#36236 from Grand Touring Committee · Rule change · TB 24-07 (2024-07 Fastrack)

In GCR, Section 9.1.2.E.13.n. after 8, change as follows:
"For GT3 and GTL (GTLite) only:"

2024-09-01 GTL Request to Include Toyota GR86 in GTL

#36324 from Erik Madsen · Rule change · TB 24-09 (2024-09 Fastrack)

In GTL Spec Lines, Cars - Toyota, classify GR86 as follows:
GTL Cars -TOYOTA
Model Years Body Style Drive-line Wheelbase (in) Notes
GR86
(Effective
11/1/2024)
2021-2023 2dr RWD 101.3

2024-09-01 GTL Inclusion of Modified Spec Miata for GTL competition

#36325 from Erik Madsen · Rule change · TB 24-09 (2024-09 Fastrack)

In GTL Spec Lines, Cars - Mazda, classify=Spec Miata as follows:
GT3 Cars - MAZDA
Model Years Body Style Drive-line Wheelbase (in) Notes

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

2024-09-01 GTL Include Mazda MX5 RF 2017- in GTL

#36428 from Erik Madsen · Rule change · TB 24-09 (2024-09 Fastrack)

In GTL Spec Lines, Cars - MAZDA, classify MX5 RF as follows:
GTL Cars -MAZDA
Model Years Body Style Drive-line Wheelbase (in) Notes
MX5 RF
(Effective
11/1/2024)
2017- 91.0

2024-10-01 FV Disc Brakes

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

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

2024-11-01 GTL G16E-GTS Fuel Injection Spec Line Change

#36588 from Isaac Preston · Rule change · TB 24-10 (2024-10 Fastrack)

In GTL Spec Lines, Engines - Toyota, G16E-GTS, change Notes as follows:
"No Turbo, (Effective 11/1/2024)No Direct injection."

2024-11-01 GTL GTL Alternate Weight and Choke Option for L16 engine

#36653 from Roger Welling · Rule change · TB 24-10 (2024-10 Fastrack)

In GTL Spec Lines, Engines - NISSAN, L16 (limited Prep), change notes as follows:
"(Effective 11/1/2024) Alt. chokes: 32mm @1910 lbs. Comp. Ratio limited to 12.0:1. Valve lift limited to .450”. Valve size: (I)
41.9mm (E) 33.0mm. Drysump and alternate connecting rods allowed. Refer to PCS 9.1.5.E.2.a.e.f.g.h.i for permitted limited
level 2 build specs."

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

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

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

2025-01-01 GTL Correct language regarding OEM Areo Devices

#37137 from Christopher Childs · Rule change · TB 25-01 (2025-01 Fastrack)

In GCR, Section APPENDIX L. 2013 TA2 TECHNICAL REGULATIONS, B.2.c., change as follows:
"B. Aerodynamic Devices
2. Rear wing
c. The entire rear wing assembly, including the end plates and any Gurney flap, shall be mounted level
with, or below, the peak of the roof. OEM aerodynamic devices do not need to adhere to the height rule."

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