BoP Lab / Road America

FP at Road America

40 laps are 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	#	Best lap	Best theoretical lap	Best qual lap	Best race lap	Best trap speed	Best S1	Best S2	Best S3	Best S4
1	Acura Integra (1991)	David Strittmatter	FP	28, 28x	2:32.395 C-Q2	2:32.220	2:32.395 C-Q2	2:33.240 A-R	133.0 A-P1	43.852 A-R	58.165 C-Q1	29.599 C-Q2	20.604 C-Q2
2	Honda CRX Si (1988)	Chris Bovis 2+ cars	FP	178	2:33.073 C-Q2	2:32.350	2:33.073 C-Q2	2:34.077 A-R	129.9 C-R	44.124 A-R	57.931 C-Q2	29.744 C-Q2	20.551 A-R
3	Mazda Miata (1990)	Stephen Simonds	FP	63	2:33.275 A-Q3	2:33.030	2:33.275 A-Q3	2:34.212 B-R2	128.8 A-R	44.186 A-R	58.438 A-P1	29.675 A-Q3	20.731 A-P1
4	Mazda Miata (1992)	Mason Workman	FP	52	2:33.321 A-Q3	2:32.892	2:33.321 A-Q3	2:34.384 A-R	128.6 C-R	44.346 A-Q3	58.246 A-Q3	29.641 A-Q3	20.659 A-Q3
5	Acura Integra (1990)	Kevin Ruck	FP	73	2:33.361 C-Q2	2:33.196	2:33.361 C-Q2	2:34.902 C-R	131.3 C-Q2	44.129 C-Q2	58.343 C-Q2	29.972 C-Q2	20.752 C-Q2
6	Honda CRX Si (1990)	Peter Shadowen	FP	12	2:33.791 A-Q3	2:33.317	2:33.791 A-Q3	2:34.937 A-R	130.1 A-Q3	44.178 A-Q3	58.249 A-Q3	29.968 A-Q3	20.922 A-Q3
7	Lotus Super Seven (1962)	Craig Chima	FP	05	2:33.913 A-Q3	2:33.305	2:33.913 A-Q3	2:34.929 A-R	128.0 A-R	44.266 A-Q3	58.469 A-Q3	29.882 A-Q3	20.688 A-Q3
8	Acura Integra (1995)	Ken Kannard 2+ cars	FP	51, 51a, 51x	2:34.141 C-Q2	2:33.872	2:34.141 C-Q2	2:35.919 A-R	131.1 C-Q2	44.347 C-P3	58.861 C-Q1	29.954 C-Q2	20.710 A-Q3
9	Honda Civic Del Sol Si VTEC (1996)	Cliff Ira	FP	36	2:34.302 A-Q3	2:33.414	2:34.302 A-Q3	2:34.965 A-R	130.5 A-R	43.878 A-Q3	59.026 A-Q3	30.133 A-Q3	20.377 A-Q3
10	Mazda Miata (1990)	Doug Weaver	FP	3	2:34.497 A-Q3	2:33.886	2:34.497 A-Q3	2:34.895 B-R2	130.8 B-R2	44.338 B-R2	58.998 A-Q3	29.772 A-Q3	20.778 A-Q3
11	Honda CRX	Chris Bovis 2+ cars	FP	178	2:34.705 D-R1	2:34.152		2:34.705 D-R1	126.6 D-R1	45.043 D-R1	58.209 D-R1	30.093 D-R1	20.807 D-R1
12	Mazda Miata (1993)	David Bednarz	FP	47, 4	2:35.139 A-Q3	2:34.533	2:35.139 A-Q3	2:35.477 A-R	128.2 C-R	44.798 C-Q1	59.256 A-Q3	29.844 A-R	20.635 A-Q3
13	Mazda Miata (1993)	Steven Powers	FP	145	2:35.552 B-R2	2:34.138	2:35.690 C-Q2	2:35.552 B-R2	129.1 A-R	44.665 B-R2	58.589 C-Q1	30.022 A-R	20.862 B-R2
14	Mazda RX-7 (1992)	Michael Lewis	FP	32	2:35.837 C-P3	2:35.032	2:36.374 C-Q1	2:36.478 C-R	127.6 C-R	44.599 C-P3	59.081 C-Q1	30.373 C-R	20.979 C-P3
15	Toyota Tercel (1992)	Graham Fuller	FP	2, 22	2:36.713 A-R	2:35.737	2:36.939 A-Q3	2:36.713 A-R	128.4 A-R	44.485 A-R	59.595 A-R	30.593 A-R	21.064 A-Q3
16	Honda Civic Si (1989)	Thomas Gaydos 2+ cars	FP	171	2:37.325 A-R	2:35.642	2:37.770 A-Q3	2:37.325 A-R	130.7 A-R	44.275 A-R	59.967 A-R	30.339 A-R	21.061 A-R
17	Mazda Miata (1990)	Mark Sargis	FP	86	2:37.331 A-R	2:36.293	2:44.130 B-Q2	2:37.331 A-R	125.1 A-R	44.605 A-R	1:00.318 A-R	30.413 A-R	20.957 A-R
18	Acura Integra	Jim Dentici	FP	77	2:37.470 D-R1	2:36.715		2:37.470 D-R1	129.0 D-R1	45.088 D-R1	59.627 D-R1	30.737 D-R1	21.263 D-R1
19	Mazda Miata	Ken Kannard 2+ cars	FP	51	2:37.926 D-R1	2:37.455		2:37.926 D-R1	126.2 D-R1	45.495 D-R1	59.692 D-R1	30.672 D-R1	21.596 D-R1
20	Mazda Miata (1990)	Bill Verdien	FP	6, 16	2:39.137 D-R1	2:38.024	2:39.575 A-Q3	2:39.137 D-R1	125.9 C-Q2	45.343 A-R	1:00.382 D-R1	31.038 D-R1	21.261 A-R
21	Mazda Miata (1991)	Gerald Lamb	FP	42	2:39.225 C-Q2	2:37.899	2:39.225 C-Q2	2:39.747 A-R	126.8 A-Q3	45.383 A-Q3	1:00.621 C-Q2	30.869 A-R	21.026 A-Q3
22	Mazda Miata (1993)	Mark Weber	FP	70, 25	2:39.606 A-Q3	2:37.840	2:39.606 A-Q3	2:39.729 A-R	127.6 A-R	45.213 A-R	1:00.985 A-R	30.531 A-R	21.111 A-Q3
23	Honda CR-X (1988)	Thomas Gaydos 2+ cars	FP	118	2:39.880 C-Q1	2:39.603	2:39.880 C-Q1	2:43.024 C-R	126.8 C-R	45.600 C-Q2	1:01.397 C-Q1	30.967 C-Q1	21.639 C-Q1
24	Mazda MX-5 (2009)	Jonathan Goodale	FP	04	2:40.401 C-P2	2:39.856	2:41.886 C-Q2	2:42.436 C-R	122.8 C-R	46.579 C-P2	1:00.095 C-P2	31.212 C-Q2	21.970 C-P1
25	Honda CRX	Thomas Gaydos 2+ cars	FP	118	2:40.772 D-R1	2:40.273		2:40.772 D-R1	125.4 D-R1	45.606 D-R1	1:01.780 D-R1	31.154 D-R1	21.733 D-R1
26	Mazda Miata (1991)	James Simaras	FP	95, 55	2:40.773 A-R	2:40.141	2:46.099 B-Q2	2:40.773 A-R	127.6 A-R	46.027 A-R	1:01.618 A-R	30.988 A-R	21.508 A-R
27	Fiat X 1/9 (1974)	Daniel Snow	FP	21	2:41.142 A-Q3	2:39.821	2:41.142 A-Q3	2:41.191 A-R	123.6 A-R	46.063 A-R	1:00.745 A-R	31.155 A-Q3	21.858 A-R
28	Mazda Miata (1990)	Robert Garrison	FP	06	2:41.495 A-P2	2:41.072			123.4 A-P3	46.351 A-P3	1:01.469 A-P3	31.447 A-P2	21.805 A-P2
29	Mazda Miata (1996)	Michael Froh	FP	72	2:42.240 B-R2	2:40.617	2:43.012 C-Q1	2:42.240 B-R2	126.3 A-R	45.949 A-R	1:01.634 C-Q2	31.570 B-R1	21.464 A-Q3
30	Mazda Miata (1992)	Lans Stout	FP	6	2:42.453 A-R	2:42.204	2:46.312 A-Q3	2:42.453 A-R	120.3 A-R	46.047 A-R	1:02.597 A-R	32.169 A-R	21.391 A-R
31	Mazda Miata (1991)	Paul Jensen	FP	188	2:44.104 C-R	2:44.104	2:46.732 C-Q2	2:44.104 C-R	121.2 C-R	47.522 C-R	1:02.258 C-R	31.789 C-R	22.535 C-R
32	Mazda RX-7 (1985)	James Gregorius	FP	09	2:44.807 A-R	2:43.858	2:49.893 A-Q3	2:44.807 A-R	126.3 A-P1	46.343 A-R	1:03.448 A-R	32.081 A-R	21.986 A-R
33	Toyota Paseo	Chris Kopley	FP	10	2:45.687 C-R	2:45.392	2:48.334 C-Q2	2:45.687 C-R	121.8 C-R	47.552 C-R	1:03.085 C-R	32.476 C-R	22.279 C-P1
34	Mazda Protégé 5 (2002)	Jeffrey Winterfield	FP	16	2:45.826 C-Q1	2:44.589	2:45.826 C-Q1	2:45.938 C-R	122.5 C-R	47.560 C-Q1	1:02.769 C-R	31.893 C-Q2	22.367 C-R
35	MG Midget (1972)	Mike Gnadt	FP	74	2:46.383 C-R	2:45.869	2:48.235 C-Q2	2:46.383 C-R	121.2 C-R	47.723 C-R	1:03.440 C-R	32.452 C-R	22.254 C-R
36	Honda CRX Si (1991)	Larry Funk	FP	64	2:46.783 A-Q3	2:44.631	2:46.783 A-Q3		123.4 A-Q3	46.917 A-Q3	1:03.691 A-Q3	31.976 A-Q3	22.047 A-Q3
37	Turner 1500	Michael Hart 2+ cars	FP	35	2:46.875 D-R1	2:46.875		2:46.875 D-R1	116.1 D-R1	48.517 D-R1	1:03.381 D-R1	32.540 D-R1	23.087 D-R1
38	Volkswagen Rabbit (1983)	Tim Linerud	FP	95	2:49.749 C-Q2	2:49.749	2:49.749 C-Q2	2:51.375 C-R	114.8 C-R	49.772 C-Q2	1:03.821 C-Q2	32.623 C-Q2	23.533 C-Q2
39	Fiat 131	David Wessel	FP	91	2:50.019 D-R1	2:49.466		2:50.019 D-R1	113.6 D-R1	49.377 D-R1	1:03.234 D-R1	33.348 D-R1	23.507 D-R1
40	Mazda Miata (1995)	Weber Manning	FP	49	2:50.348 C-P2	2:49.285			118.4 C-P2, C-P3	48.319 C-P3	1:04.620 C-P2	33.440 C-P2	22.906 C-P3
41	Toyota Corolla (1971)	Jonathan Stalzer	FP	71	2:52.856 C-P2	2:52.497			109.4 C-P2	50.150 C-P2	1:04.922 C-P2	33.660 C-P2	23.765 C-P2
42	Acura Integra	Michael Hart 2+ cars >115%	FP	34	3:07.400 B-R1>	3:05.285>	3:11.366 B-Q2>	3:07.400 B-R1>	103.0 B-R1>	52.454 B-R1>	1:12.500 B-R1>	36.549 B-R1>	23.782 B-R1>

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in; 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 ">" (with ">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 → I4AT 1.26 mi
S2 I4AT → I11 1.65 mi
S3 I11 → I13AB 0.57 mi
S4 I13AB → SF 0.57 mi
SF Spd SF → SFT 0.02 mi
Spd I4AT → I4A 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	Best lap	Best qual	Best race	Best trap	Best S1	Best S2	Best S3	Best S4
Acura Integra	FP	5	2:32.395David Strittmatter	2:32.395David Strittmatter	2:33.240David Strittmatter	133.0David Strittmatter	43.852David Strittmatter	58.165David Strittmatter	29.599David Strittmatter	20.604David Strittmatter
Acura Integra (1991)	FP	1	2:32.395David Strittmatter	2:32.395David Strittmatter	2:33.240David Strittmatter	133.0David Strittmatter	43.852David Strittmatter	58.165David Strittmatter	29.599David Strittmatter	20.604David Strittmatter
Acura Integra (1990)	FP	1	2:33.361Kevin Ruck	2:33.361Kevin Ruck	2:34.902Kevin Ruck	131.3Kevin Ruck	44.129Kevin Ruck	58.343Kevin Ruck	29.972Kevin Ruck	20.752Kevin Ruck
Acura Integra (1995)	FP	1	2:34.141Ken Kannard	2:34.141Ken Kannard	2:35.919Ken Kannard	131.1Ken Kannard	44.347Ken Kannard	58.861Ken Kannard	29.954Ken Kannard	20.710Ken Kannard
Acura Integra	FP	2	2:37.470Jim Dentici	3:11.366Michael Hart	2:37.470Jim Dentici	129.0Jim Dentici	45.088Jim Dentici	59.627Jim Dentici	30.737Jim Dentici	21.263Jim Dentici
Honda CRX Si	FP	4	2:33.073Chris Bovis	2:33.073Chris Bovis	2:34.077Chris Bovis	130.1Peter Shadowen	44.124Chris Bovis	57.931Chris Bovis	29.744Chris Bovis	20.551Chris Bovis
Honda CRX Si (1988)	FP	1	2:33.073Chris Bovis	2:33.073Chris Bovis	2:34.077Chris Bovis	129.9Chris Bovis	44.124Chris Bovis	57.931Chris Bovis	29.744Chris Bovis	20.551Chris Bovis
Honda CRX Si (1990)	FP	1	2:33.791Peter Shadowen	2:33.791Peter Shadowen	2:34.937Peter Shadowen	130.1Peter Shadowen	44.178Peter Shadowen	58.249Peter Shadowen	29.968Peter Shadowen	20.922Peter Shadowen
Honda CR-X (1988)	FP	1	2:39.880Thomas Gaydos	2:39.880Thomas Gaydos	2:43.024Thomas Gaydos	126.8Thomas Gaydos	45.600Thomas Gaydos	1:01.397Thomas Gaydos	30.967Thomas Gaydos	21.639Thomas Gaydos
Honda CRX Si (1991)	FP	1	2:46.783Larry Funk	2:46.783Larry Funk		123.4Larry Funk	46.917Larry Funk	1:03.691Larry Funk	31.976Larry Funk	22.047Larry Funk
Mazda Miata	FP	16	2:33.275Stephen Simonds	2:33.275Stephen Simonds	2:34.212Stephen Simonds	130.8Doug Weaver	44.186Stephen Simonds	58.246Mason Workman	29.641Mason Workman	20.635David Bednarz
Mazda Miata (1990)	FP	5	2:33.275Stephen Simonds	2:33.275Stephen Simonds	2:34.212Stephen Simonds	130.8Doug Weaver	44.186Stephen Simonds	58.438Stephen Simonds	29.675Stephen Simonds	20.731Stephen Simonds
Mazda Miata (1992)	FP	2	2:33.321Mason Workman	2:33.321Mason Workman	2:34.384Mason Workman	128.6Mason Workman	44.346Mason Workman	58.246Mason Workman	29.641Mason Workman	20.659Mason Workman
Mazda Miata (1993)	FP	3	2:35.139David Bednarz	2:35.139David Bednarz	2:35.477David Bednarz	129.1Steven Powers	44.665Steven Powers	58.589Steven Powers	29.844David Bednarz	20.635David Bednarz
Mazda Miata	FP	1	2:37.926Ken Kannard		2:37.926Ken Kannard	126.2Ken Kannard	45.495Ken Kannard	59.692Ken Kannard	30.672Ken Kannard	21.596Ken Kannard
Mazda Miata (1991)	FP	3	2:39.225Gerald Lamb	2:39.225Gerald Lamb	2:39.747Gerald Lamb	127.6James Simaras	45.383Gerald Lamb	1:00.621Gerald Lamb	30.869Gerald Lamb	21.026Gerald Lamb
Mazda Miata (1996)	FP	1	2:42.240Michael Froh	2:43.012Michael Froh	2:42.240Michael Froh	126.3Michael Froh	45.949Michael Froh	1:01.634Michael Froh	31.570Michael Froh	21.464Michael Froh
Mazda Miata (1995)	FP	1	2:50.348Weber Manning			118.4Weber Manning	48.319Weber Manning	1:04.620Weber Manning	33.440Weber Manning	22.906Weber Manning
Lotus Super Seven	FP	1	2:33.913Craig Chima	2:33.913Craig Chima	2:34.929Craig Chima	128.0Craig Chima	44.266Craig Chima	58.469Craig Chima	29.882Craig Chima	20.688Craig Chima
Honda Civic Del Sol Si VTEC	FP	1	2:34.302Cliff Ira	2:34.302Cliff Ira	2:34.965Cliff Ira	130.5Cliff Ira	43.878Cliff Ira	59.026Cliff Ira	30.133Cliff Ira	20.377Cliff Ira
Honda CRX	FP	2	2:34.705Chris Bovis		2:34.705Chris Bovis	126.6Chris Bovis	45.043Chris Bovis	58.209Chris Bovis	30.093Chris Bovis	20.807Chris Bovis
Mazda RX-7	FP	2	2:35.837Michael Lewis	2:36.374Michael Lewis	2:36.478Michael Lewis	127.6Michael Lewis	44.599Michael Lewis	59.081Michael Lewis	30.373Michael Lewis	20.979Michael Lewis
Mazda RX-7 (1992)	FP	1	2:35.837Michael Lewis	2:36.374Michael Lewis	2:36.478Michael Lewis	127.6Michael Lewis	44.599Michael Lewis	59.081Michael Lewis	30.373Michael Lewis	20.979Michael Lewis
Mazda RX-7 (1985)	FP	1	2:44.807James Gregorius	2:49.893James Gregorius	2:44.807James Gregorius	126.3James Gregorius	46.343James Gregorius	1:03.448James Gregorius	32.081James Gregorius	21.986James Gregorius
Toyota Tercel	FP	1	2:36.713Graham Fuller	2:36.939Graham Fuller	2:36.713Graham Fuller	128.4Graham Fuller	44.485Graham Fuller	59.595Graham Fuller	30.593Graham Fuller	21.064Graham Fuller
Honda Civic Si	FP	1	2:37.325Thomas Gaydos	2:37.770Thomas Gaydos	2:37.325Thomas Gaydos	130.7Thomas Gaydos	44.275Thomas Gaydos	59.967Thomas Gaydos	30.339Thomas Gaydos	21.061Thomas Gaydos
Mazda MX-5	FP	1	2:40.401Jonathan Goodale	2:41.886Jonathan Goodale	2:42.436Jonathan Goodale	122.8Jonathan Goodale	46.579Jonathan Goodale	1:00.095Jonathan Goodale	31.212Jonathan Goodale	21.970Jonathan Goodale
Fiat X 1/9	FP	1	2:41.142Daniel Snow	2:41.142Daniel Snow	2:41.191Daniel Snow	123.6Daniel Snow	46.063Daniel Snow	1:00.745Daniel Snow	31.155Daniel Snow	21.858Daniel Snow
Toyota Paseo	FP	1	2:45.687Chris Kopley	2:48.334Chris Kopley	2:45.687Chris Kopley	121.8Chris Kopley	47.552Chris Kopley	1:03.085Chris Kopley	32.476Chris Kopley	22.279Chris Kopley
Mazda Protégé 5	FP	1	2:45.826Jeffrey Winterfield	2:45.826Jeffrey Winterfield	2:45.938Jeffrey Winterfield	122.5Jeffrey Winterfield	47.560Jeffrey Winterfield	1:02.769Jeffrey Winterfield	31.893Jeffrey Winterfield	22.367Jeffrey Winterfield
MG Midget	FP	1	2:46.383Mike Gnadt	2:48.235Mike Gnadt	2:46.383Mike Gnadt	121.2Mike Gnadt	47.723Mike Gnadt	1:03.440Mike Gnadt	32.452Mike Gnadt	22.254Mike Gnadt
Turner 1500	FP	1	2:46.875Michael Hart		2:46.875Michael Hart	116.1Michael Hart	48.517Michael Hart	1:03.381Michael Hart	32.540Michael Hart	23.087Michael Hart
Volkswagen Rabbit	FP	1	2:49.749Tim Linerud	2:49.749Tim Linerud	2:51.375Tim Linerud	114.8Tim Linerud	49.772Tim Linerud	1:03.821Tim Linerud	32.623Tim Linerud	23.533Tim Linerud
Fiat 131	FP	1	2:50.019David Wessel		2:50.019David Wessel	113.6David Wessel	49.377David Wessel	1:03.234David Wessel	33.348David Wessel	23.507David Wessel
Toyota Corolla	FP	1	2:52.856Jonathan Stalzer			109.4Jonathan Stalzer	50.150Jonathan Stalzer	1:04.922Jonathan Stalzer	33.660Jonathan Stalzer	23.765Jonathan Stalzer

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

June Sprints 2025 → Runoffs 2025 2025-06-06 to 2025-09-29

2025-07-01 FP BMW Z4 update

#38490 from Bryce McGuire · Rule change · TB 25-07 (2025-07 Fastrack)

In EP Spec Lines, BMW Z4 (03-05), add to Notes the following:
“52mm Flat Plate Intake Restrictor.”

2025-07-01 FP EP Fiat 124 Spider Competition Adjustment Request

#38498 from John Baucom · Rule change · TB 25-07 (2025-07 Fastrack)

In EP Spec Lines, Fiat 124 Sport Spider 1600 & 124 Spider 2000, change as follows:
Weight: "~~2050~~ 2000"
Carburetor No. & Type: "(2) Weber 40 IDF-40IFI, (2) Solex C40P116, 34 36mm choke(s) req’d, (2) Weber 45DCOE w/ 34 36 mm
choke(s) on I.R. manifold or fuel injection."

Runoffs 2025 → June Sprints 2026 2025-09-29 to 2026-06-05

2025-10-01 FP HP Plymouth Arrow spec omission

#38995 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

In HP Spec Lines, Plymouth Arrow (76-80), add the following wording to Trans. Speeds(max):
"4 or 5"

2025-10-01 FP Add Wheel Diameter to Appendix G

#39008 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

In Appendix G.2.3, change as follows:
"Rim width and diameter are is absolute maximums."

2025-10-01 FP Add TB ID tolerance to general Prod rules

#39009 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

In GCR, Section 9.1.5.E., change as follows:
9.1.5.E.1.b.4: "The inside dimensions of the throttle body casting/housing (as measured at the throttle butterfly) must remain
stock (tolerance of +/-.25mm), but the throttle body can otherwise be ported and polished."
9.1.5.E.2.b.4: "The inside dimensions of the throttle body casting/housing and all dimensions of the throttle butterfly must
remain stock (tolerance of +/-.25mm)."

2025-11-01 FP Please Lower Weight of 280Z

#38871 from Matthew Miller · Rule change · TB 25-09 (2025-09 Fastrack)

In EP Spec Lines, Nissan 280Z, change Weight (lbs) as follows:
"(Effective 11/1/2025) ~~2560~~ 2400
*~~2624~~ 2460
**~~2688~~ 2520"

2025-11-01 FP Miata Weight Adjustment Follow Up

#38949 from Don Tucker · Rule change · TB 25-10 (2025-10 Fastrack)

In EP Spec Lines, Mazda MX-5 / Miata 1.8L (90-97), Effective 11/1/2025 make the following weight change:
"~~2150~~ 2125"

2025-11-01 FP Weight Break for 1098 Midget / Sprite

#38970 from Kendall Jones · Rule change · TB 25-10 (2025-10 Fastrack)

In HP Spec Lines, Austin-Healey Sprite/Midget 1098cc, Effective 11/1/2025make the following weight change:
"~~1630~~ 1550"

2025-11-01 FP HP Volvo 142 spec omission

#38994 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

In HP Spec Lines, Volvo 142/142E P-1800 Engine, Effective 11/1/2025 add the following wording to Notes:
"Comp. Ratio limited to 12.0:1. Valve lift limited to .425”."

2025-11-01 FP HP Mini DOHC 1.6

#38996 from Production Committee · Rule change · TB 25-10 (2025-10 Fastrack)

In HP Spec Lines, Mini Cooper (07-13) (includes 09-15 convertible and 12-15 Coupe), Effective 11/1/2025 make the following
changes to the Notes:
"Compression ratio limited to 11.0:1, Valve lift limited to ~~.450”~~.390"."

2025-11-01 FP 83-88 FP Scirocco Spec Line Creation

#38997 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In FP Spec Lines, classify Volkswagen Scirocco (83-88) as follows:

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

2025-11-01 FP Add to Rabbit description

#39019 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In FP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit (Includes ~~Convertible~~ Cabriolet)"
In HP Spec Lines, make the following spec line correction:
"Volkswagen Rabbit 1588 (Includes Cabriolet)"
"Volkswagen Rabbit 1715 (Includes Cabriolet)"
"Volkswagen Rabbit 1780 (Includes Cabriolet)"

2025-11-01 FP Clean-up 9.1.5.E.7e

#39025 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In GCR, Section 9.1.5.E.7., change as follows:
"e. Cars fitted with rear drum brakes, can convert to rear disc brakes without penalty. N~~ote that the “Brakes Std.” and “Brakes~~
~~Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes stock, from converting to rear~~
~~disc brakes under this rule~~. When converting from rear drum brakes to rear disc brakes:
1. Rear brake rotors must be solid and can be no larger in diameter than the largest permitted front brake rotor, as defined on
the vehicle’s spec line.
2. Rear calipers and mounting brackets are unrestricted but must be made of a ferrous or aluminum material. ~~The standard and~~
~~alternate brake listings on a vehicle’s specification line, does not prohibit a car that was fitted with rear drum brakes as stock~~

Show 3 more lines

~~from converting to rear disc brakes under this rule.~~
3. The “Brakes Std.” and “Brakes Alt.” listings on a vehicle’s spec line do not prohibit a car that was fitted with rear drum brakes
as stock from converting to rear disc brakes under this rule."

2025-11-01 FP Add TB size to Ford Mustang (94-98) Spec Line

#39130 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In EP Spec Lines, Ford Mustang (94-98) add the following to the Fuel Injected Equipped Throttle Body Inside Diameter column:
"60"

2025-11-01 FP Correct Existing VW Scirocco Spec Line

#39140 from Production Committee · Rule change · TB 25-11 (2025-11 Fastrack)

In FP Spec Lines, Volkswagen Scirocco, change spec line as follows:

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

2025-12-01 FP TR2 Notes E&O

#39180 from Anthony Parker · Rule change · TB 25-12 (2025-12 Fastrack)

In EP Spec Lines, Triumph TR2, 3, 3A, 4, 4A, TR4, TR4A, IRS, make the following change to the Notes:
"Front apron assembly may be made of alternate material. ~~Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990~~
~~lbs.~~ Laycock overdrive, may use 5 speed gearbox without overdrive."

2025-12-01 FP Balance of Power

#39187 from Jim Simaras · Rule change · TB 25-12 (2025-12 Fastrack)

In EP Spec Lines, make the following changes to Restrictors:
BMW Z3 2.5L: "~~52mm~~ 50mm Flat Plate Intake Restrictor"
BMW Z3 2.8L (97-00): "~~55mm~~ 53mm Flat Plate Intake Restrictor"
BMW 328i/is E36 (96-99): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 328i/ci E46 (01-06): "~~58mm~~ 55mm Flat Plate Intake Restrictor"
BMW 325i/is (E46) (01-06): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325is M-Technic (1994): "~~56mm~~ 53mm Flat Plate Intake Restrictor"
BMW 325i/is E-36 (92-95): "~~56mm~~ 53mm Flat Plate Intake Restrictor"

Show 4 more lines

In EP Spec Lines, BMW Z3 2.5L, change Weight as follows:
"~~2500~~ 2550
*~~2563~~ 2614
**~~2625~~ 2678"

2025-12-01 FP Competition Adjustment Request

#39259 from David Strittmatter · Rule change · TB 25-12 (2025-12 Fastrack)

In FP Spec Lines, Lancia Scorpion, change Weight as follows:
"~~2030~~ 1950"

2025-12-01 FP Factory Roll Bar Removal on VW Convertible

#39268 from Tim Linerud · Rule change · TB 25-12 (2025-12 Fastrack)

In FP Spec Line, Volkswagen Rabbit (Includes Convertible), remove the following wording in Notes:
"~~Factory roll bar must be removed on Cabriolet.~~"

Applies to Volkswagen Rabbit on this page: Tim Linerud

2025-12-01 FP FP Parity Request

#39325 from Mason Workman · Rule change · TB 25-12 (2025-12 Fastrack)

In FP, change Weight as follows:
Acura Integra (90-93):
"~~2235~~ 2285
*~~2291~~ 2342
**~~2347~~ 2399"
Acura Integra LS (94-01):
"~~2260~~ 2310
*~~2317~~ 2368

Show 16 more lines

**~~2373~~ 2426"
Acura Integra GSR (92-93):
"~~2325~~ 2375
*~~2383~~ 2434
**~~2441~~ 2494"
Honda Civic Del Sol VTEC (94-97):
"~~2290~~ 2340
*~~2347~~ 2399
**~~2378~~ 2457"
Honda Civic Si (99-00):
"~~2250~~ 2300
*~~2306~~ 2358
**~~2363~~ 2415"
FP Spec Lines, change Notes as follows:
Mazda Miata 1.6L (90-97): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."
Mercury Capri 1.6L (91-94): "Comp. Ratio limited to ~~10.0:1~~ 11.0:1, Valve lift limited to ~~.390”~~ .425"."

2025-12-01 FP Adjust former-GTL Honda's with B/D-Series Engines

#39374 from Production Committee · Rule change · TB 25-12 (2025-12 Fastrack)

In GCR, Appendix N GTL inclusion into FP, Engines - HONDA, change Disp. (cc) – Weight (lbs) as follows:
"D15 – 1493cc – ~~1895~~ 2000
D15b7 – 1493cc – ~~1895~~ 2000
D16 – 1590cc – ~~1945~~ 2055
D16A – 1590cc – ~~1945~~ 2055
B16A – 1595cc – ~~1950~~ 2065
B18 – 1797cc – ~~2050~~ 2170
B18 – 1834cc – ~~2065~~ 2185"

2026-02-01 FP Request Toyota 5E Series Engines

#38208 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

In FP Appendix N, add spec line for the Toyota 5E engine to the "Engines - TOYOTA" section:

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

2026-02-01 FP Request for Toyota 4E Series Engines

#38209 from Scott Schick · Rule change · TB 26-02 (2026-02 Fastrack)

In FP Appendix N, add spec line for the Toyota 4E engine to the "Engines - TOYOTA" section:

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

2026-02-01 FP Dual Carbs for the Fiat X1/9

#39593 from Daniel Snow · Rule change · TB 26-02 (2026-02 Fastrack)

In FP Spec Lines, change as follows:
Fiat X-1/9 & Bertone 1300:
"(1) Weber 32 DMTR or DATRA/100 w/32mm bores
(1) 40 DCNF w/32mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 31.3/(1.23)~~30.5/(1.20) (E) 1.23~~

Show 10 more lines

Trans. Speeds: 5"
Fiat X-1/9 & Bertone:
"Fuel Injection
(1) 34 DMTR~~, (1) 36 DCNF w/34mm choke(s), or (1) 40DCNF w/34mm choke(s)~~
(1) 36 or 40 DCNF w/34mm choke(s)
(2) auto-type side-draft w/28mm choke(s) on I.R. manifold
Orientation of the alternate carburetor is unrestricted. The alternate carb adapter may not be thicker than 1.25”. The adapter
may have a bore larger than the throttle bore of the approved alternate carburetor.
Valve Size: (I) 35.5/(1.40) (E) 33.0/(1.30)
Trans. Speeds: 5 or 4"

2026-03-01 FP Correct Valve Sizes on FP Fiat x19 1300 and 1500

#39850 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

In FP Spec Lines, change Drivetrain Notes as follows:
Fiat X-1/9 & Bertone 1300:
Valve Size: ~~"(I) 35.5/(1.40) (E) 31.3/(1.23)~~ (I) 36.3/(1.43) (E) 31.2/(1.23)"
Fiat X-1/9 & Bertone:
Valve Size: ~~"(I) 35.5/(1.40) (E) 33.0/(1.30)~~ (I) 36.3/(1.43) (E) 33.3/(1.31)"

2026-03-01 FP Dual Carburetor Adjustments

#39851 from DANIEL SNOW · Rule change · TB 26-03 (2026-03 Fastrack)

In FP Spec Lines, Fiat X-1/9 & Bertone, change Drivetrain Notes as follows:
"(2) auto-type side-draft w/28 30mm choke(s) on I.R. manifold"

Applies to Fiat X 1/9 on this page: Daniel Snow

2026-05-01 FP Miata track width - errors and omissions

#39976 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)

In EP Spec Lines, Mazda MX-5 / Miata (94-97), change Track (F/R) mm/(in.) as follows:
Track (F/R) mm/(in.): ~~"1483/1509 (58.4/59.4)~~ 1516/1534(59.7/60.4)"

2026-05-01 FP GCR Spec Line Correction

#39977 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)

In FP Spec Lines, correct the carburation under the "Drivetrain Notes" section of the following spec lines as an E&O:
Volkswagen Jetta (includes GLI) (82-84):
"(1) 40 DCN, DCNF, IDF w/38mm choke(s)
(2) auto-type side-draft w/34mm choke(s) on I.R. manifold,"
Volkswagen Jetta (GLI, GL) (85-92):
"(1) 40 DCN, DCNF or IDF w/36mm choke(s)
(2) auto-type side-draft w/32mm choke(s) on I.R. manifold"
Volkswagen Rabbit (Includes Cabriolet):

Show 8 more lines

"(1) 40 DCN, DCNF, IDF w/38mm choke(s)
(2) auto-type side-draft w/34mm choke(s) on I.R. manifold"
Volkswagen Scirocco:
"(1) 40 DCN, DCNF, IDF w/38mm choke(s)
(2) auto-type side-draft w/34mm choke(s) on I.R. manifold"
Volkswagen Scirocco (83 to 88):
"(1) 40 DCN, DCNF, IDF w/38mm choke(s)
(2) auto-type side-draft w/34mm choke(s) on I.R. manifold"

2026-05-01 FP CGR Spec Line Weight Correction

#39978 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)

In FP Spec Lines, make the following correction to the "Base Weight (lbs)" section as an E&O:
Volkswagen Rabbit (Includes Cabriolet)
"1789 0cc:
1803"
Volkswagen Scirocco (83 to 88)
"1789 0cc:
1803"

2026-05-01 FP Triumph GT6 Spec Change.

#40098 from Anthony Parker · Rule change · TB 26-05 (2026-05 Fastrack)

In EP Spec Lines, Triumph GT6, change the "Drivetrain Notes" as follows:
"(2) auto-type w/44 45mm choke(s)"

2026-05-01 FP Request to Classify BMW E21 320i

#40110 from Doug DeRonne · Rule change · TB 26-05 (2026-05 Fastrack)

In HP Spec Lines, classify BMW 320i/is (E21) (80-83) as follows:

2026-05-01 FP BMW 318is 84-85 engine displacement correction

#40116 from Production Committee · Rule change · TB 26-05 (2026-05 Fastrack)

In HP Spec Lines, BMW 318i/is E30 (84-85), change Displacement Bore x Stroke mm/ (in.) as follows:
"~~1797~~ 1767 89.0 x 71.0 (3.50x2.80)"

June Sprints 2026 → Runoffs 2026 2026-06-05 to 2026-09-28

2026-07-01 FP 1996-2000 Honda Civic (CX, DX, VP, LX) with Engine Code D16Y7

#40322 from Thomas Beverly · Rule change · TB 26-07 (2026-07 Fastrack)

In HP, classify Honda Civic CX/DX/LX (96-00):

2026-07-01 FP 1275 Midget/Sprit Alternate intake manifold E/O

#40370 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)

In HP Spec Lines, Austin-Healey Sprite Mk I, II, III, IV MG Midget Mk I, II, III, IV & 1500, change Drivetrain Notes as follows:
"(2) 1.25” SU w/ no modifications
(2) 1.5” SU w/ no modifications (on alternate manifold)
Valves: (I) 33.0/(1.30) (E) 29.5/(1.16)
Comp. ratio 12.0:1, Valve lift .450”
Trans. Speeds: 4
Drivetrain Level 2 preparation only.
Listed spec line weight does not change with alternate or stock transmission.

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

2026-07-01 FP HP Honda Civic (92-95)

#40464 from Production Committee · Rule change · TB 26-07 (2026-07 Fastrack)

In HP, make the following changes to the "Honda Civic DX (92-95)" spec line:
Spec Line Name: "Honda Civic DX/LX (92-95)"
Wheels: "~~13x7~~ 15x7"
Wheelbase: "2/ 4 door: 2621/(103.2) 2/3 door: 2573/(101.3)"
Weight: "~~2420~~ 2350"

2026-08-01 FP Mini Cooper Compression Ratio

#40517 from Brian Linn · Rule change · TB 26-08 (2026-08 Fastrack)

In HP Spec Lines, Mini Cooper (02-06) (includes 05-08 convertible), change Drivetrain Notes as follows:
"Comp. ratio ~~10.6~~ 11.0:1, Valve lift .450”

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