FA at Mid-Ohio Sports Car Course

2019-02-01 FA FA MZR 2.0 Engine Specification

#25814 from Club Racing Board · Rule change · TB 19-02 (2019-02 Fastrack)

In FA Table 2, Swift 014-Mazda MZR 2.0, make changes to the notes as follows:
“Sealed engine sourced by Elite Engines Block must be OE Mazda MZR 2.0 liter casting
#LF95, maximum bore 3.455”. Crankshaft must be forged Mazda OE 2 liter marked “fomoco”
DBE8Z31E, maximum stroke 3.270”, minimum rod journal diameter 1.830”, minimum main
journal diameter 2.026”, minimum weight 31.5 lbs. Connecting rods must be magnetic steel;
maximum rod length 5.760”, minimum weight with fasteners 530g. Maximum compression
ratio 13.1:1. Piston minimum weight 320g, maximum dome height from quench area .125”.
Wrist pin minimum diameter .825”, minimum weight 83g. Head must be OE Mazda 2.0 liter

2019-02-01 FA FA 016 weight increase

#26063 from Club Racing Board · Rule change · TB 19-02 (2019-02 Fastrack)

In FA Table 2, Swift 016 2.3 liter Mazda Duratec spec line, change the weight as follows:
“1420 1450”
In FA Table 2, Swift 016 2.5 liter Mazda spec line, change the weight as follows:
“1420 1450”

2019-03-01 FA Request to add FA engine spec lines

#26183 from Randall Smart · Rule change · TB 19-03 (2019-03 Fastrack)

In FA Table 2, Formula 3 car spec line, make changes to the spec line as follows:

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

2019-05-01 FA Add data plate requirement

#26707 from Formula/Sports Racing Committee · Rule change · TB 19-05 (2019-05 Fastrack)

In GCR section 9.1.1.A.1, add a new section as follows:
“i. All FA cars competing in Majors Races and the Runoffs must have the AIM part
#X47KPFSOLO2R0 data box mount installed on their 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

2019-05-31 FA Adjust Line N restrictor size and minimum weight

#26691 from Formula/Sports Racing Committee · Rule change · TB 19-06 (2019-06 Fastrack)

In FA Table 1, Line N, change the weight as follows:
"1345 1375"

2019-08-31 FA Swift 014 Mazda MZR 2.0 E&O

#27305 from Formula/Sports Racing Committee · Rule change · TB 19-09 (2019-09 Fastrack)

In FA, Table 2, Swift 014 Mazda MZR 2.0 line, change the notes as follows:
"Piston minimum weight 320 280g, maximum dome height from quench area .125"."

2019-10-01 FA Follow up to Letter #27344 on Honda Powered FA Rules

#27363 from Dave Zavelson · Rule change · TB 19-10 (2019-10 Fastrack)

In FA, GCR section 9.1.1.A.2, remove the following section in its entirety:
c. Honda Civic (K20Z3) Base Engine
In FA, GCR section 9.1.1.A.2, remove the following section in its entirety:
d. Honda Civic (K20Z3) Uprated Engine
In FA, GCR section 9.1.1.A.2, remove the following section in its entirety:
e. Honda Civic (K20Z3) Engine for Swift 016 only
In FA, Table 1, remove Spec Lines K and L in their entirety and re-letter the following lines accordingly.
In FA, Table 2, add a spec line as follows:

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

2019-12-01 FA Move wheel dimensions from Bodywork subsection to

#27493 from Formula/Sports Racing Committee · Rule change · TB 19-12 (2019-12 Fastrack)

General section
In FA, delete GCR section 9.1.1.A.1.g.9 in its entirety as follows:
"The minimum wheel diameter is thirteen (13) inches. Ex-FSV cars are permitted front wheel width:
minimum six (6) inches, maximum eight (8) inches; rear wheel width: minimum eight (8) inches,
maximum ten (10) inches. All other cars front wheel width: ten (10) inches; rear wheel width: minimum
fourteen (14) inches, maximum fifteen (15) inches."
In FA, GCR section 9.1.1.A.1, add a new section as follows:
"h. The minimum wheel diameter is thirteen (13) inches. Ex-FSV cars are permitted front wheel width:

2019-12-01 FA Table 2 Mazda MZR 2.0 E&O

#27640 from Formula/Sports Racing Committee · Rule change · TB 19-12 (2019-12 Fastrack)

In FA Table 2, Mazda MZR 2.0 line, make changes as follows:
"Ralt RT40, Ralt RT41, and Swift 014 chassis only"

2020-01-01 FA Request to merge FB into FA

#25611 from Stan Clayton · Rule change · TB 19-01 (2019-01 Fastrack)

In FA Table 2, add a new spec line as follows:
Table 2
Car Engine
Wheel
Width (in)
± .060
Aero Transmission Weight Notes

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

2020-01-01 FA Suggestions for FB/F1000 into FA

#27319 from Jake Latham · Rule change · TB 20-01 (2020-01 Fastrack)

In FA Table 2, Formula 1000 spec line, make changes as follows:

2020-01-01 FA Change Swift 016 - 2.3 liter Mazda Duratec restrictor size

#27880 from Formula/Sports Racing Committee · Rule change · TB 20-01 (2020-01 Fastrack)

In FA Table 2, Swift 016 - 2.3 liter Mazda Duratec spec line, change the restrictor as follows:
"The 2.3 Liter Mazda Duratec engine and ECU is unrestricted with the exceptions that a 33 31mm SIR
must be used with a sealed air box (part no. FA11016INT) supplied by SCCA Enterprises, the maximum
compression ratio is 14.0:1, and the maximum displacement is limited to 2266cc."
Table 2
Car Engine
Wheel
Width (in)

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

2020-03-01 FA FA weight correction/clarification

#28430 from Formula/Sports Racing Committee · Rule change · TB 20-03 (2020-03 Fastrack)

In FA Table 1 Engine Notes, change as follows:
"(only apply to Table 1 and Table E)"
In FA Table 2, change the Pro Formula Mazda engine column as follows:
"See Table 1 for engine specifications"

2020-04-01 FA Request higher compression ratio and prior weights for F1000 cars

#28162 from JEREMY HILL · Rule change · TB 20-04 (2020-04 Fastrack)

In FA Table 2, Formula 1000 spec line, change as follows:
"Motorcycle-based 4-cycle up to 1000cc, maximum compression ratio 13.5:1 14.5:1; otherwise, current
FA engine rules apply."

2020-04-01 FA Remove redundant wheel dimension provisions

#28554 from Formula/Sports Racing Committee · Rule change · TB 20-04 (2020-04 Fastrack)

In FA, GCR section 9.1.1.A.1.h, make changes as follows:
"The minimum wheel diameter is thirteen (13) inches. Ex-FSV cars are permitted front wheel width:
minimum six (6) inches, maximum eight (8) inches; rear wheel width: minimum eight (8) inches,
maximum ten (10) inches. All other cars f Front wheel width: ten (10) inches; rear wheel width: minimum
fourteen (14) inches, maximum fifteen (15) inches."
TECHNICAL BULLETIN

2020-04-01 FA E&O Formula 3 spec line

#28596 from Formula/Sports Racing Committee · Rule change · TB 20-04 (2020-04 Fastrack)

In FA Table 2, Formula 3 car spec line, change as follows:
"Formula 3 car"
"All FIA compliant engines years 1997 to 2008 2017. Engines must be run per FIA spec. with 30mm
required restrictor."

2020-05-01 FA Remove redundant spec line in Table 1

#28720 from Formula/Sports Racing Committee · Rule change · TB 20-05 (2019-05 Fastrack)

In FA Table 1, remove the Volkswagen 1835cc SOHC spec line in its entirety.

2020-05-01 FA E&O general engine rules

#28772 from Formula/Sports Racing Committee · Rule change · TB 20-05 (2019-05 Fastrack)

In FA, GCR section 9.1.1.A.2.a, change as follows:
"Engines shall be derived from automobiles and may be prepared for competition in accordance with
SCCA GT preparation rules, except as unless otherwise specified in the Tables below. OEM blocks and
heads must be used except when unless otherwise noted in the FA Engine Tables below."

2020-06-01 FA E&O permitted engine modifications

#28831 from Formula/Sports Racing Committee · Rule change · TB 20-06 (2020-06 Fastrack)

In FA, GCR section 9.1.1.A.2.b, change as follows:
"The following modifications are permitted unless restricted in the tables below."
In FA, GCR section 9.1.1.A.2.b.6, change as follows:
"The bore, crankshaft, stroke, and flywheel are unrestricted, providing provided the appropriate
specified displacement limit is not exceeded, unless restricted in the tables below."
In FA, GCR section 9.1.1.A.2.b.9, change as follows:
"Any distributor and/or transistor ignition may be used, provided it’ s installation does not require any
modification of the engine."

2020-06-01 FA E&O Transmissions

#28832 from Formula/Sports Racing Committee · Rule change · TB 20-06 (2020-06 Fastrack)

In FA, GCR section 9.1.1.A.3.a, change as follows:
"For all types of transmissions, no more than five forward speeds and an operational reverse gear shall
be used unless otherwise noted in Table 2 below."

2020-06-01 FA Swift 016 Gurney flap wicker clarification

#28884 from SCCA Staff · Rule change · TB 20-06 (2020-06 Fastrack)

In FA Table 2, Swift 016 2.3 liter Mazda Duratec line, clarify wording as follows:
"Wickers: Wickers/gurneys Gurney flaps: Gurney flaps may be added to the top of the trailing edge of the
front flaps, front main plane, and rear wing lower elements only, and but may not be used on the rear
wing upper element. They must be 90 degrees to the mounting surface and may be no more 0.500 inch
high as measured from the upper surface of the wing element. Wicker/gurney Gurney flap height must
remain constant across the width of the individual component span. No saw tooth
wickers/gurneys Gurney flaps are allowed. The trailing edge of wings and flaps may be drilled for the
purposes of attaching wickers/gurneys a Gurney flap."

2020-07-01 FA Request to Adjust FB Weight for Stock Engines

#29005 from JEREMY HILL · Rule change · TB 20-07 (2020-08 Fastrack)

Thank you for your letter. This change is not recommended. In response to unanimous member input
about the competitiveness of former F1000 cars in the FA class, the Club Racing Board revised the rules
to allow modified engines. No requests to retain stock engines were received following the
incorporation of F1000 into the FA class.

2021-01-01 FA Request to classify Formula Lites Crawford FL15

#29702 from Tyler Wilson · Rule change · TB 21-01 (2021-01 Fastrack)

In FA Table 2, classify the Formula Lites Crawford FL15 as follows:

2021-03-01 FA E&O FA Intake Restrictors

#30273 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 1, Spec Line K, make changes as follows:

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

2021-03-01 FA Clean up Spec Lines A and B in Table 1

#30274 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 1, Spec Lines A and B, make changes as follows:

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

2021-03-01 FA Clean up Spec Line C in Table 1

#30275 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 1, Spec Line C, make changes as follows:

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

2021-03-01 FA Clean up Spec Lines J and L in Table 1

#30276 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 1, Spec Lines J and L, make changes as follows:

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

2021-03-01 FA Move engine specifications to Pro Formula Mazda spec line notes

#30278 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 2, Pro Formula Mazda spec line, make changes as follows:
Table 2
Car Engine
Wheel
Width (in)
± .060
Aero Transmission Weight Notes

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

2021-03-01 FA Update F3 Americas spec line

#30280 from Formula/Sports Racing Committee · Rule change · TB 21-03 (2021-03 Fastrack)

In FA Table 2, F3 Americas spec line, make changes as follows:

2021-04-01 FA Update Table 1 Weights for Spec Lines C, I, and K

#30355 from Formula/Sports Racing Committee · Rule change · TB 21-04 (2021-04 Fastrack)

In FA Table 1, Spec Line C, change the weight as follows:
"1200 1175"
In FA Table 1, Spec Line I, change the weight as follows:
"1250 1175"
In FA Table 1, Spec Line K, change the weight as follows:
"1160 1175"

2021-04-01 FA Remove redundant reference in Table 2 spec line

#30366 from Formula/Sports Racing Committee · Rule change · TB 21-04 (2021-04 Fastrack)

In FA Table 2, Purpose built and ex-Pro Atlantic cars spec line, change as follows:
"Up to 5 forward gears, limited slip and locked differential allowed (sequential trans. carries 25 lb penalty"

2021-04-01 FA Correct the name of the FR Americas car

#30369 from Formula/Sports Racing Committee · Rule change · TB 21-04 (2021-04 Fastrack)

In FA Table 2, FR Americas spec line, change the car name as follows:
"FR Americas Ligier JS F3"

2021-04-01 FA Clean up Spec Line D in Table 1

#30372 from Formula/Sports Racing Committee · Rule change · TB 21-04 (2021-04 Fastrack)

In FA Table 1, Spec Line D, make changes as follows:

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

2021-04-01 FA Table 2 Honda K20Z3 request

#30386 from David Zavelson · Rule change · TB 21-04 (2021-04 Fastrack)

In FA Table 2, Honda Civic K20Z3 spec line, change the notes as follows:
"Intake manifold and throttle body assembly must may be used as either the original, unmodified HPD parts delivered from HPD,
ports must be as cast beginning 1.00” into ports or unmodified AT Power Direct-To-Head (DTH) 45mm individual throttle bodies,
PN 102-104-00020. Fuel injectors must be OE Honda Civic K20Z3 2.0 liter PN 16450-RBB-003, fuel rail must be OE Honda Civic
K20Z3 2.0 liter PN 16220-RAA-A01."

2021-05-01 FA Correct engine name in Swift 016 2.3 liter spec line

#30447 from Formula/Sports Racing Committee · Rule change · TB 21-05 (2021-05 Fastrack)

In FA Table 2, Swift 016 2.3 liter spec line, change the engine name as follows:
"2.3 liter Mazda MZR/Ford Duratec"

2021-05-01 FA Correct engine name in Swift 016 2.5 liter spec line

#30448 from Formula/Sports Racing Committee · Rule change · TB 21-05 (2021-05 Fastrack)

In FA Table 2, Swift 016 2.5 liter spec line, change the engine name as follows:
"2.5 liter Mazda MZR/Ford Duratec"

2021-05-01 FA Revise Table 1 Spec Lines and clarify application of Engine Notes

#30456 from Formula/Sports Racing Committee · Rule change · TB 21-05 (2021-05 Fastrack)

In FA Table 1, remove Spec Lines E, F, G, and H and change the remaining spec lines and engine notes as follows:

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

2021-06-01 FA E&O Mazda MZR 2.0 and Honda Civic K20Z3 chassis eligibility

#30632 from Formula/Sports Racing Committee · Rule change · TB 21-06 (2021-06 Fastrack)

In FA Table 2, Mazda MZR 2.0 spec line, add chassis as follows:
"Ralt RT40, Ralt RT41, Swift 008, and Swift 014 chassis only"
In FA Table 2, Honda Civic K20Z3 spec line, make changes as follows:
"Ralt RT40, Ralt RT41, Swift 008, and Swift 014 and 016 chassis only"

2021-07-01 FA Update FA rules package

#30717 from Formula/Sports Racing Committee · Rule change · TB 21-07 (2021-07 Fastrack)

In FA, GCR section 9.1.1.A, make changes as follows:
"The SCCA shall publish Formula Atlantic Category Specifications containing These preparation rules provide the basic officially
recognized specifications for each cars eligible to compete in the Category during the calendar year Formula Atlantic class. These
classifications are listed in Table 2. Table 1 lists the approved engines and associated specifications for purpose-built and ex-pro
Formula Atlantic cars. Table 2 (Spec Line Cars) lists other approved chassis and engine combinations with any exceptions to the
basic specifications for the class."
In FA Table 1, change the Engine Notes as follows:
"(Notes apply only to P purpose-built and E ex-P pro Formula Atlantic cars spec line and not to spec line cars in Table 2)"

2021-07-01 FA Move Mazda MZR/Ford Duratec 2296cc and 2500cc to Table 2

#30718 from Formula/Sports Racing Committee · Rule change · TB 21-07 (2021-07 Fastrack)

In FA Table 2, add the following:
In FA Table 1, remove the Mazda MZR/Ford Duratec 2296cc line in its entirety.
In FA Table 1, remove the Mazda MZR/Ford Duratec 2500cc line in its entirety.

2021-07-01 FA Clean up Table 2 Mazda MZR 2.0L and Honda Civic K20Z3 spec lines

#30719 from Formula/Sports Racing Committee · Rule change · TB 21-07 (2021-07 Fastrack)

In FA Table 2, Mazda MZR 2.0 spec line, change as follows:
"5-speed sequential"
In FA Table 2, Honda K20Z3 spec line, change as follows:
"5-speed sequential"

2021-08-01 FA Move Toyota 1800 to Table 2

#30822 from Formula/Sports Racing Committee · Rule change · TB 21-08 (2021-08 Fastrack)

In FA Table 2, add the following:
Table 2 (Spec Line Cars)
Car Engine
Wheel
Width (in)
± .060
Aero Transmission Weight Notes
In FA Table 1, remove the Toyota 4A-GE 1800 line in its entirety.

2021-08-01 FA E&O Swift 016 wheel width reference

#30939 from Formula/Sports Racing Committee · Rule change · TB 21-08 (2021-08 Fastrack)

In FA Table 2, Swift 016 2.3 liter Mazda MZR/Ford Duratec spec line, change as follows:
"(F) 10 (R) 14 Min. & 15 in Max."
In FA Table 2, Swift 016 2.5 liter Mazda MZR/Ford Duratec spec line, change as follows:
"(F) 10 (R) 14 Min. & 15 in Max."

2021-09-01 FA E&O Table 2 engine names

#31085 from Formula/Sports Racing Committee · Rule change · TB 21-09 (2021-09 Fastrack)

In FA Table 2, Mazda MZR 2.0 spec line, change as follows:
"2.0 liter Mazda MZR 2.0"
In FA Table 2, Honda Civic K20Z3 spec line, change as follows:
"2.0 liter Honda Civic K20Z3"

2022-02-01 FA Reorganize Tables 1 and 2

#31985 from Formula/Sports Racing Committee · Rule change · TB 22-02 (2022-02 Fastrack)

In FA, GCR section 9.1.1.A.2.b, make changes as follows:
"The following modifications are permitted unless restricted in the sections or tables below that follow."
In FA, GCR section 9.1.1.A.2, add a new section as follows:
"c. 2.0 liter Honda K20Z3
1. Block must be OEM Honda Civic K20Z3 2.0 liter PN 11000-RRB-810, maximum bore 86.070mm (3.3886").
2. Crankshaft must be OEM Honda Civic PN 13310-PRB-A00, maximum stroke 86.1mm (3.390"), unmodified main and rod
journals, minimum weight 37.5 lbs.
3. Connecting rods must be OEM Honda Civic PN 13320-PRBA01, maximum center-to-center rod length 138.95mm (5.470"),

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

2022-03-01 FA Closing the Gap

#31934 from Matthew Gendron · Rule change · TB 22-03 (2022-03 Fastrack)

In FA Table 2, Pro Formula Mazda spec line, change the notes as follows:
"Porting not permitted. Street port or bridge port allowed."

2022-04-01 FA E&O FA Transmission section

#32251 from Club Racing Board · Rule change · TB 22-04 (2022-04 Fastrack)

In FA, GCR section 9.1.1.A.3.d, add the following:
"Gearboxes with shafts that are transverse to the longitudinal axis of the chassis are not allowed. The sole only exceptions are
the gearbox final drive (crown wheel) shaft axis and final drive shafts (half shafts) and the motorcycle gearbox permitted in
Formula 1000 cars in Table 2 below."

2022-04-01 FA E&O Swift 016 2.5 liter Aero column

#32363 from Club Racing Board · Rule change · TB 22-04 (2022-04 Fastrack)

In FA Table 2, Swift 016 2.5 liter spec line, change as follows:
"See 2.3 liter N notes"

2022-05-01 FA Update FR Americas rulebook requirement

#32491 from Club Racing Board · Rule change · TB 22-05 (2022-04 Fastrack)

In FA Table 2, FR Americas Ligier JS F3 spec line, change as follows:
"Car must comply with FR Americas rules. Competitors must have current copies of FIA Formula 3 Regional Technical
Regulations Formula Regional Americas Championship Sporting Regulations, Onroak Automotive Ligier JS F3 Information Manual,
and HPD engine-related specifications and instructions in their possession and present them upon request."

2022-05-01 FA Clarify verification of sealed engine compliance

#32522 from Club Racing Board · Rule change · TB 22-05 (2022-04 Fastrack)

In FA, GCR section 9.1.1.A.2, add a new section as follows:
"e. Engines that are required to be sealed are subject to full inspection by SCCA stewards and/or technical staff. The competitor
will be responsible for all costs associated with reassembly and resealing of the engine."

2022-05-01 FA Clarify Formula Lites and FR Americas sealed engine requirement

#32523 from Club Racing Board · Rule change · TB 22-05 (2022-04 Fastrack)

In FA Table 2, Formula Lites FL15 spec line, change the notes as follows:
"Engine must be sealed in compliance with Formula Lites requirements. Car must comply with all Formula Lites technical
regulations found here:"
In FA Table 2, FR Americas Ligier JS F3 spec line, change the notes as follows:
"Engine must be sealed in compliance with FR Americas or prior F3 Americas requirements. Car must comply with FR Americas
rules."

2022-10-01 FA Pro Formula Mazda Dimension E&O

#33160 from Club Racing Board · Rule change · TB 22-10 (2022-10 Fastrack)

In FA Table 2, Pro Formula Mazda spec line, change the notes as follows:
"All current FA rules apply to areas not covered by this spec line. Apex seals unrestricted. Street port or bridge port allowed.
Unmodified OEM lower intake manifold required, upper manifold unrestricted. Balance tube not permitted. Fuel injection only.
70mm Throttle Body. The maximum height of the wing and/or endplates shall not exceed 99cm (38.98 inches). The overall
maximum width of the bodywork behind the front wheels shall not exceed 132cm (51.17 inches)."

2022-12-01 FA Reclassify 2010-2017 Formula Renault 2.0 as a spec line car in FA

#33395 from Formula/Sports Racing Committee · Rule change · TB 22-12 (2022-12 Fastrack)

In FA Table 2, add a new spec line as follows:
Table 2
Car Engine Wheel
Width
(in)
± .060
Aero Transmission Weigh

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

2022-12-01 FA Change Swift 016 2.3L restrictor size and minimum weight

#33472 from Club Racing Board · Rule change · TB 22-12 (2022-12 Fastrack)

In FA Table 2, Swift 016 - 2.3 liter Mazda MZR/Ford Duratec spec line, change the restrictor as follows:
"The 2.3 Liter Mazda Duratec engine and ECU is unrestricted with the exceptions that a 31 32mm SIR must be used with a sealed
air box (part no. FA11016INT) supplied by SCCA Enterprises, the maximum compression ratio is 14.0:1, and the maximum
displacement is limited to 2266cc."
In FA Table 2, Swift 016 - 2.3 liter Mazda MZR/Ford Duratec spec line, change the weight as follows:
"1450 1420"

2023-01-01 FA BDA Displacement

#33431 from John Stowe · Rule change · TB 23-01 (2023-01 Fastrack)

In FA Table 1, add a spec line as follows:

2023-05-01 FA E&O - Correct Pro Formula Mazda spec line dimensional equivalent

#34085 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

In FA Table 2, Pro Formula Mazda spec line, change as follows:
"The overall maximum width of the bodywork behind the front wheels shall not exceed 132cm (51.17 51.97 inches)."

2023-05-01 FA Add new spec line for MSR Formula Mazda FMzR to Table 2

#34139 from Club Racing Board · Rule change · TB 23-05 (2023-05 Fastrack)

RM 23-06 – MSR - FMzR Formula Atlantic Classification dated 4/21/2023
In FA Table 2, add a spec line as follows:

2023-06-01 FA Simplify Pro Formula Mazda wheel allowance

#34190 from Club Racing Board · Rule change · TB 23-06 (2023-06 Fastrack)

In FA, Pro Formula Mazda spec line, change wheel width as follows:
"Pro Mazda series wheels

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

2025-02-01 FA Classify FR European Championship car as spec line car in Table 2

#37658 from Club Racing Board · Rule change · TB 25-02 (2025-02 Fastrack)

In FA Table 2, add the following:
Table 2 (Spec Line Cars)
Car Engine
Wheel
Width (in)
± .060
Aero Transmission Weight Notes

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

2025-03-01 FA Update Formula Renault 2.0 spec line notes

#37853 from Club Racing Board · Rule change · TB 25-03 (2025-03 Fastrack)

In FA Table 2, Formula Renault 2.0 (10-17) spec line, change the notes as follows:
"Engine must remain sealed. Car must comply with year-specific Formula Renault 2.0 manual, technical regulations, and all
applicable bulletins found here:. Competitors must have copies of these materials in their possession and present them upon
request.
https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/bulletins-techniques/2017,
https://sites.google.com/a/renault-sport.com/formule-renault-2-0-en/manuel-d-utilisateur/2017.
The following exceptions apply: Tire choice is unrestricted. No part of the car may be altered from original Formula Renault 2.0
components, except for necessary repairs that do not affect performance."

2025-07-01 FA Ligier JS F3 Tire Choice

#38434 from Rocco Magni · Rule change · TB 25-07 (2025-07 Fastrack)

In FA Table 2, FR Americas Ligier JS F3 spec line, change the notes as follows:
"Engine must be sealed in compliance with FR Americas or prior F3 Americas requirements. Car must comply with FR Americas
rules, with the following exception: front tires may be Hoosier P/N 43363, size 240/580R13 in MS compound, and rear tires may
be Hoosier P/N 43368, size 300/590R13 in MS compound. Competitors must have current copies of Formula Regional Americas
Championship Sporting Regulations, Onroak Automotive Ligier JS F3 Information Manual, and HPD engine-related specifications
and instructions in their possession and present them upon request."

2025-11-01 FA Re-Consider USF Pro 2000 Car for Formula Atlantic Class

#38783 from Augie Pabst · Rule change · TB 25-09 (2025-09 Fastrack)

Effective 11/1/25 in FA Table 2, add the following:

2026-01-01 FA Alternate Intake Manifold for MZR

#38223 from Ove Olsson · Rule change · TB 26-01 (2026-01 Fastrack)

In FA, GCR section 9.1.1.2.d, modify as follows:
"9. Intake manifold must be unmodified Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT, 1.882” maximum bore
diameter at throttle plates. Elan or Mazda Speed equivalent Elite intake manifold may be replaced with unmodified intake Noor
P/N 0088-8-00 with intake runners AT Power P/N 13624."
"10. Elan DP02-60-003 or Mazda Speed equivalent Elite USF2015AT intake manifold must use an A aluminum spacer must be
used between the intake manifold and cylinder head castings; minimum spacer length is 2.200”."

2026-01-01 FA Engine Compression Rule Change Request

#39302 from Reilly Harris · Rule change · TB 26-01 (2026-01 Fastrack)

In FA Table 2, Formula 1000 spec line, change the Engine as follows:
"Motorcycle-based 4-cycle up to 1000cc, maximum compression ratio 14.5:1;. o Otherwise, current FA engine rules apply."

2026-01-01 FA Change Formula 1000 allowances

#39608 from Club Racing Board · Rule change · TB 26-01 (2026-01 Fastrack)

In FA Table 2, Formula 1000 spec line, change the Notes as follows:
"Car must comply with December 2019 GCR Formula 1000 (FB) Preparation Rules, https://www.scca.com/downloads/48184-
gcr-december-2019/download, except as modified by this spec line. The prohibition of using carbon fiber in any external panels
or any panels licked by the airstream in Part 3.C of the December 2019 GCR F1000 (FB) Preparation Rules is removed, with the
exception that the car's floor pan/undertray must comply with the requirements of Part 2.D of the December 2019 GCR F1000
(FB) Preparation Rules. The prohibition of forward-facing gaps or openings in the bodywork in Part 3.I of the December 2019 GCR
F1000 (FB) Preparation Rules is removed. Part 3.D of the December 2019 GCR F1000 (FB) Preparation Rules is modified as
follows: "Between the rear of the front tire and the front of the rear tire, no point on the lower surface of the car (the surface

2026-02-01 FA Pro Mazda Classification and Performance Enhancement Proposal

#39411 from Stephen Lamana · Rule change · TB 26-02 (2026-02 Fastrack)

In FA Table 2, Pro Formula Mazda spec line, change the notes as follows:
"All current FA rules apply to areas not covered by this spec line. Apex seals unrestricted. Street port or bridge port
allowed. Unmodified OEM l Lower intake manifold required unrestricted, upper intake manifold unrestricted. Balance tube not
permitted. Fuel injection only. Maximum 70 80mm T throttle B body. The maximum height of the wing and/or
endplates shall must not exceed 99cm (38.98 inches). The overall maximum width of the bodywork behind the front
wheels shall must not exceed 132cm (51.97 inches)."