BoP Lab / Buttonwillow Raceway Park

F5 + SRF + F6 + FB at Buttonwillow Raceway Park

No mapCal Club 2024, Majors Apr 2016

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	PHOENIX F1000	Gary Hickman 2+ cars	FB	76	1:38.870 I-R1		1:39.142 I-Q2	1:38.870 I-R1	1:40.349 I-R2	+1.980 I-R2
2	57	Gary Hickman 2+ cars	FB	76	1:40.111 J-R2		1:45.024 J-Q2	1:40.111 J-R2	1:40.423 J-R2	+1.207 J-R2		37.569 J-R2	29.916 J-R2
3	50	John LaBrie	FB	33	1:41.943 J-R2		1:42.272 J-Q1	1:41.943 J-R2	1:43.787 J-R2	+14.666 J-R2		38.495 J-R2	30.488 J-Q1
4	Stohr F1000	Mark Nixon	FB	17	1:42.666 I-R2		1:44.871 I-Q2	1:42.666 I-R2	1:44.577 I-R1	+1.260 I-R1
5	57	Vince Balch	SRF	12, 72	1:44.060 J-Q1		1:44.060 J-Q1	2:02.578 J-R1	2:03.362 J-R1	+0.917 J-R1		38.898 J-Q1	31.468 J-Q1
6	19	Jeff Jorgenson 2+ cars	F5	69	1:51.129 J-R1		1:52.268 J-Q1	1:51.129 J-R1	1:52.820 J-R2	+0.815 J-R2		41.225 J-R1	34.103 J-R1
7	96	Lance Spiering	F5	28	1:56.503 J-R2		1:56.935 J-Q2	1:56.503 J-R2	1:57.596 J-R2	+2.243 J-R2		42.705 J-R2	36.562 J-R1
8		Aaron Stein	SRF	18	1:58.588 J-Q1		1:58.588 J-Q1					44.011 J-Q1	35.885 J-Q1
9	19	Mike Miserendino	SRF	7, 11	1:59.512 J-Q1		1:59.512 J-Q1	2:01.122 J-R1	2:01.258 J-R1	+0.372 J-R1		44.153 J-Q1	36.182 J-Q1
10	KBS Mark V	Jeff Jorgenson 2+ cars	F6	72	1:59.670 C-R2	1:59.161	2:00.926 C-Q2	1:59.670 C-R2	2:00.247 C-R1	+0.791 C-R1	104.7 C-R2	43.771 C-R2	36.720 C-R2	38.670 C-R1
11	33	Jake Pipal >115%	SRF	28	2:00.141 K-Q		2:00.141 K-Q
12	33	Michael Boyle >115%	SRF	53	2:01.696 J-Q2		2:01.696 J-Q2	2:02.530 J-R2	2:03.121 J-R1	+0.404 J-R1		45.011 J-Q2	36.892 J-Q2
13	19	Corey Condit >115%	SRF	37	2:02.637 J-Q2		2:02.637 J-Q2	2:02.945 J-R2	2:03.510 J-R2	+1.244 J-R2		45.260 J-R2	36.979 J-Q2
14	19	Douglas Stewart >115%	SRF	71	2:02.638 J-Q2		2:02.638 J-Q2	2:02.941 J-R2	2:03.288 J-R1	+0.485 J-R1		45.417 J-Q1	37.255 J-Q2
15	19	Jon French >115%	SRF	1	2:03.682 K-Q		2:03.682 K-Q
16	19	Don Palla >115%	SRF	37	2:04.440 K-Q		2:04.440 K-Q
17	33	Eugene Barbera >115%	SRF	24	2:05.667 J-R1		2:06.369 J-Q2	2:05.667 J-R1	2:06.223 J-R1	+1.081 J-R1		46.139 J-Q2	38.463 J-R2
18	19	Chris Morgan >115%	SRF	43	2:06.495 K-Q		2:06.495 K-Q
19	33	Bruce Richardson >115%	SRF	3	2:06.718 J-Q1		2:06.718 J-Q1	2:08.794 J-R1	2:48.082 J-R2	+4.790 J-R2		47.252 J-Q1	38.426 J-Q1
20	2	Elliott Freireich >115%	SRF	56	2:08.800 K-Q		2:08.800 K-Q

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
PHOENIX F1000	FB	1	1:38.870Gary Hickman	1:39.142Gary Hickman	1:38.870Gary Hickman
57	FB/SRF	2	1:40.111Gary Hickman	1:44.060Vince Balch	1:40.111Gary Hickman		37.569Gary Hickman	29.916Gary Hickman
50	FB	1	1:41.943John LaBrie	1:42.272John LaBrie	1:41.943John LaBrie		38.495John LaBrie	30.488John LaBrie
Stohr F1000	FB	1	1:42.666Mark Nixon	1:44.871Mark Nixon	1:42.666Mark Nixon
19	F5/SRF	7	1:51.129Jeff Jorgenson	1:52.268Jeff Jorgenson	1:51.129Jeff Jorgenson		41.225Jeff Jorgenson	34.103Jeff Jorgenson
96	F5	1	1:56.503Lance Spiering	1:56.935Lance Spiering	1:56.503Lance Spiering		42.705Lance Spiering	36.562Lance Spiering
(unknown)	SRF	1	1:58.588Aaron Stein	1:58.588Aaron Stein			44.011Aaron Stein	35.885Aaron Stein
KBS Mark V	F6	1	1:59.670Jeff Jorgenson	2:00.926Jeff Jorgenson	1:59.670Jeff Jorgenson	104.7Jeff Jorgenson	43.771Jeff Jorgenson	36.720Jeff Jorgenson	38.670Jeff Jorgenson
33	SRF	4	2:00.141Jake Pipal	2:00.141Jake Pipal	2:02.530Michael Boyle		45.011Michael Boyle	36.892Michael Boyle
2	SRF	1	2:08.800Elliott Freireich	2:08.800Elliott Freireich

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

Majors Apr 2016 → Super Tour Apr 2017 2016-04-29 to 2017-04-28

No changes on record for these classes.

Super Tour Apr 2017 → Super Tour Apr 2018 2017-04-28 to 2018-04-27

No changes on record for these classes.

Super Tour Apr 2018 → Cal Club 2024 2018-04-27 to 2024-02-23

2019-07-01 SRF SRF Dash Windscreen Kit

#27028 from Robey Clark · Rule change · TB 19-07 (2019-07 Fastrack)

In SRF, GCR section 9.1.8.E.1.V, add the following:
"ii. Dash Windscreen Kit, P/N 1180103 or P/N 180102, is allowed."

2019-08-31 F5 Request for Weight Increase for Motorcycle Powered Cars

#27214 from Clint McMahan · Rule change · TB 19-09 (2019-09 Fastrack)

slower · weightF500 Honda CBR600RR, Suzuki GSXR600, and Yamaha R6 minimum weights increase to 900 lbs.

As printed in Fastrack

In the F500 engine table, change the weight as follows:
Honda CBR600RR (03-13): "~~875~~ 900"
In the F500 engine table, change the weight as follows:
Suzuki GSXR600 (03-13): "~~875~~ 900"
In the F500 engine table, change the weight as follows:
Yamaha R6 (03-13): "~~875~~ 900"

2019-12-01 SRF SRF Tire Warmer Rule

#27622 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.V.s delete section in its entirety as follows and re-letter as follows:
"~~It is forbidden to regroove tires.~~"
In SRF, GCR section 9.1.8.E.1.X.f, add new sections as follows:
"Tires:
Dry:
Front – Hoosier P/N 46340 P185/60ZR13
Rear – Hoosier P/N 46350 P205/60ZR13 SRF
Wet:

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Front – Hoosier P/N 46100 P185/60R13 H20
Rear – Hoosier P/N 46105 205/60R13 H20
1. It is forbidden to regroove tires.
2. The use of tire warmers or cooling methods other than natural air convection or conduction is
prohibited. The penalty for violation will be the loss of qualifying times and/or the disqualification of race
results."

2019-12-01 SRF SRF / SRF3 Nose Weight Reduction

#27706 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.E.a, change the minimum weight as follows:
"Front 35 32 lbs."

2019-12-01 SRF SRF / SRF3 Majors & Regional Class Updates

#27723 from Robey Clark · Rule change · TB 19-12 (2019-12 Fastrack)

In SRF, GCR section 9.1.8.E, make changes as follows:
"SPEC RACER FORD 3 (SRF/SRF3)"
In SRF, GCR section 9.1.8.E.1, make changes as follows:
"SPEC RACER FORD 2 (SRF) Regional Only Class"
In SRF, GCR section 9.1.8.E.2, make changes as follows:
"SPEC RACER FORD 3 (SRF3)"
In SRF, GCR section 9.1.8.E.2.A, make changes as follows:
"It is the intent of the SRF3, ~~GEN3~~ a Ford 1.6L conversion, to update the current 1.9L SRF drivetrain for

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class longevity. ~~SRF and SRF3 shall compete side by side, for respective points and championships.~~"

202-01-01 SRF SRF Rain / Brake Rule - BoD approved as follows

#34958 from Board of Directors · Rule change · TB 23-10 (2023-10 Fastrack)

In SRF, GCR section 9.1.8.D.1.W.l, change as follows as approved by BoD on 9/12/2023:
"This rule supersedes GCR section 9.3.32.B.2 effective 1/1/202~~4 through 12/31/2024~~."

2020-01-01 F5 Change 600cc restrictor size

#27883 from Formula/Sports Racing Committee · Rule change · TB 20-01 (2020-01 Fastrack)

slower · inductionF500 Honda CBR600RR, Suzuki GSXR600, Yamaha R6 restrictor reduced to 28mm from 29mm.

As printed in Fastrack

In the F500 engine table, change the restrictor as follows:
Honda CBR600RR (03-13): "29 28mm Flat Plate Intake Restrictor"
In the F500 engine table, change the restrictor as follows:
Suzuki GSXR600 (03-13): "29 28mm Flat Plate Intake Restrictor"
In the F500 engine table, change the restrictor as follows:
Yamaha R6 (03-13): "29 28mm Flat Plate Intake Restrictor"
Table 1
Car Engine Wheel
Width (in)
± .060
Aero Transmission Weight Notes
USF2000
Tube
Frame
2.0 Liter
Mazda MZR
See notes See notes See notes See
notes
Car must comply with the 2012
Pro USF2000 rules. Competitors
must have the current rules in their
possession and present them upon
request. The following sections of
the 2012 Pro rules do not apply:
14.1.1 thru 14.1.4; 14.12.2 thru
14.12.13; 14.13.1; 14.13.2; 14.13.5;
14.18 in its entirety; 14.19 in its
entirety; 14.27 in its entirety; 13.34 in
its entirety

2020-05-01 SRF SRF Bump Stop Correction

#27019 from Robey Clark · Rule change · TB 19-07 (2019-07 Fastrack)

In SRF, GCR section 9.1.8.E.1.X.h, make changes as follows:
"Shock Absorbers: Penske shock P/N 280396 with spec valving shall be used as a sealed
assembly with no modification of any kind. If shock seals are damaged in any way, the
shock must be sent to an authorized SCCA Enterprises service center for verification and
resealing at the competitor’s cost. Beginning
05/01/~~2020~~ 2019, the SCCA ~~Enterprises~~ bump ~~rubber~~ stop P/N 280407 may be used as
delivered with no modification of any kind; if used, maximum of one bump ~~rubber~~ stop per
shock. Effective 05/01/2020, only the SCCA bump stop P/N 280407 may be used as

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delivered with no modification of any kind; if used, maximum of one bump stop per
shock.”

2020-07-01 F5 Request for Cockpit Adjustment of External Jetting Devices

#28359 from Scott Thorp · Rule change · TB 20-07 (2020-08 Fastrack)

unclearF5 request to adjust external jetting device cockpit control denied; no rule change made.

As printed in Fastrack

Thank you for your letter. After reviewing the response to the WDYT published in the May 2020 Fastrack
Minutes, the Club Racing Board does not recommend this change.

2020-07-01 F5 Two Stroke Motors (reply to #28359 WDYT)

#28816 from Jim Murphy · Rule change · TB 20-07 (2020-08 Fastrack)

Thank you for your letter. Please see the response to letter #28359 in this Fastrack.

2020-07-01 F5 Re letter requesting driver adjustable carb mixture

#28840 from Jay Novak · Rule change · TB 20-07 (2020-08 Fastrack)

Thank you for your letter. Please see the response to letter #28359 in this Fastrack.

2020-07-01 F5 #28359 WDYT Request for Cockpit Adjustment

#28875 from Richard Schmidt · Rule change · TB 20-07 (2020-08 Fastrack)

unclearF5 cockpit adjustment request response published in Fastrack letter 28359.

As printed in Fastrack

Thank you for your letter. Please see the response to letter #28359 in this Fastrack.

2020-10-01 F5 Request to Update Suzuki Engine Years for F500

#29453 from Wiley McMahan · Rule change · TB 20-10 (2020-10 Fastrack)

added · engineF500 Suzuki GSXR600 engine years extended from 2003-2013 to 2003-2019.

As printed in Fastrack

In the F500 engine table, update as follows:
"Suzuki GSXR600 (03-13 19)"

2020-12-01 SRF SRF Shocks, Springs and Ride Height.

#29688 from Robey Clark · Rule change · TB 20-12 (2020-12 Fastrack)

In SRF, GCR section 9.1.8.E.1.I, change as follows:
"NO MODIFICATIONS ALLOWED. Only SCCA Enterprises sealed Penske shocks P/N 280396 shall be used. Only front spring P/N
280387 or P/N RO28037 shall be used. Only rear spring P/N 280390 shall be used. ~~Effective May 1, 2020, o~~ Only the SCCA Bump
Stop P/N 280407 may be used, with no modification of any kind. Bump stops are optional. If used, only one bump stop per shock
is permitted."
"All shock absorbers must be sealed by SCCA Enterprises. Prior to sealing, the shock absorbers ~~will~~ shall be rebuilt
by SCCA Enterprises or its authorized rebuilders."
In SRF, GCR section 9.1.8.E.1.X, change as follows:

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"c. Rear Springs: 412-429 lbs./in Enterprises P/N 280390 ~~or previous Enterprises supplied part (ex.RO280388 or RO280389)~~."
"h. Shock Absorbers: Only the Penske shock P/N 280396 with spec valving shall be used as a sealed assembly, with no
modification of any kind. If shock seals are damaged in any way, the shock must be sent to an authorized SCCA Enterprises
service center for verification and resealing at the competitor’s cost. ~~Effective May 1, 2020, o~~ Only the SCCA Bump Stop P/N
280407 may be used, with no modification of any kind. Bump stops are optional. If used, only one bump stop per shock is
permitted."
"i. Ground Clearance: Minimum is 2.75 inches measured at the frame on the front and rear axle lines with~~out~~ driver, as raced."

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"

2021-06-01 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

2021-08-01 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."

2021-12-01 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.

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."

2022-03-01 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."

2022-06-01 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 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.

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(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"

2022-08-01 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 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.”

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;

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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.

2023-05-01 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 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."

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 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:

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"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.

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