BoP Lab / Road America

EP at Road America

No mapRunoffs 2020

This track has been raced on 2 configurations (Scoring Sidebar Race, 4.05 mi; 4.01 mi). Laps on different configurations are not comparable, so only events on the 4.05 mile layout are shown; switch above to see the others.

Sectors are not comparable across all of these events. Sector times and the theoretical lap use Runoffs 2025, Runoffs 2026 only. Runoffs 2020 (different number of sectors), Runoffs 2024 (different number of sectors) count towards whole-lap times and trap speed only.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3	S4
1	BMW Z3 (1999)	Tyler Ladd 2+ cars	EP	51, 51x	2:26.803 E-Q3	2:26.803	2:26.803 E-Q3	2:27.869 E-R	2:28.629 E-R	+0.902 E-R	139.9 E-Q2	42.266 A-R	56.939 A-R	28.577 A-R	19.808 A-R
2	Mazda RX-7 (1990)	John Hainsworth	EP	95	2:27.115 E-Q2	2:27.115	2:27.115 E-Q2	2:28.445 E-R	2:28.688 E-R	+0.545 E-R	140.3 C-R	42.267 C-Q2	56.874 C-Q2	28.661 C-Q2	19.830 C-Q2
3	BMW Z3 2.5L (1999)	Jon Brakke 2+ cars	EP	89x, 89, 89a	2:27.293 C-Q1	2:27.065	2:27.293 C-Q1	2:31.314 C-R			140.8 C-Q1	41.873 C-Q1	56.504 C-Q1	28.770 C-Q1	19.918 C-Q1
4	BMW Z3 2.5L	Jesse Prather	EP	34	2:27.322 G-Q3		2:27.322 G-Q3	2:29.047 G-R	2:29.568 G-R	+1.114 G-R	141.7 G-Q3
5	BMW Z3 (1999)	Jon Brakke 2+ cars	EP	89	2:27.869 A-R	2:27.453	2:29.239 A-Q3	2:27.869 A-R	2:28.741 A-R	+1.341 A-R	137.0 A-R	41.976 A-R	56.917 A-R	28.755 A-R	19.805 A-R
6	Mazda Miata (1999)	Chris Haldeman	EP	28	2:28.600 C-P1	2:28.014	2:28.993 C-Q1	2:37.123 C-R			136.4 C-Q1	42.406 C-P2	56.827 C-Q1	28.969 C-Q1	19.812 C-P1
7	BMW Z3 2.5L (1999)	Tyler Ladd 2+ cars	EP	51x, 51	2:28.756 C-R	2:27.839	2:28.776 C-Q2	2:28.756 C-R	2:29.584 C-R	+1.873 C-R	138.4 C-Q2	42.112 C-Q2	57.084 C-Q1	28.776 C-R	19.867 C-R
8	BMW 325i/is E30 (1987)	Tim Schreyer	EP	38	2:28.765 A-R	2:28.121	2:29.828 G-Q3	2:28.765 A-R	2:28.955 A-R	+1.147 A-R	136.1 A-R	42.268 A-R	57.136 A-R	28.948 A-R	19.769 A-R
9	Mazda Miata	Jon Brakke 2+ cars	EP	89	2:28.777 G-Q2		2:28.777 G-Q2	2:30.939 G-R	2:31.891 G-R	+1.860 G-R	136.5 G-Q3
10	Mazda Miata	Matt Reynolds	EP	71	2:28.861 G-Q2		2:28.861 G-Q2	2:29.423 G-R	2:29.877 G-R	+0.918 G-R	136.7 G-Q1
11	Caterham 7 America (2000)	Peter Norton 2+ cars	EP	50	2:29.394 C-Q2	2:28.480	2:29.394 C-Q2	2:30.284 C-R	2:30.794 C-R	+2.678 C-R	135.5 C-R	42.702 C-Q2	57.134 C-R	28.848 C-Q2	19.796 C-Q1
12	Mazda RX-7 (1982)	Austin Bradshaw	EP	41	2:29.663 C-Q2	2:29.429	2:29.663 C-Q2	2:30.350 C-R	2:30.906 C-R	+1.734 C-R	138.2 E-Q2	42.399 C-Q2	57.624 C-Q1	29.556 C-Q2	19.850 C-Q2
13	BMW 328i/is E36 (1998)	Bill Miller	EP	47	2:30.206 E-Q2	2:30.206	2:30.206 E-Q2	2:30.224 E-R	2:31.156 E-R	+1.050 E-R	140.7 E-R	42.671 A-R	59.852 A-R	29.719 A-R	20.175 A-R
14	BMW 328i/is (1997)	Cameron Wogrin	EP	181	2:30.518 G-Q2	2:30.128	2:30.518 G-Q2	2:30.665 C-R	2:31.629 C-R	+1.144 C-R	139.8 G-Q1	42.693 C-R	58.130 C-R	29.313 C-R	19.992 C-R
15	Lotus/Caterham 7 America (2000)	Peter Norton 2+ cars	EP	50	2:30.714 E-Q2		2:30.714 E-Q2	2:31.490 E-R	2:32.621 E-R	+1.264 E-R	133.3 E-Q2
16	Mazda Miata (1999)	Tony Ave	EP	4	2:31.119 A-R	2:30.071	2:31.379 A-Q3	2:31.119 A-R	2:31.544 A-R	+0.931 A-R	130.3 A-R	43.401 A-R	57.378 A-Q3	29.153 A-R	20.139 A-Q3
17	BMW 328i/is E36	William Lamkin	EP	28	2:31.375 G-Q3		2:31.375 G-Q3	2:32.938 G-R	2:33.484 G-R	+1.988 G-R	140.2 G-Q3
18	Triumph GT6 (1970)	Anthony Parker	EP	44	2:31.647 C-R	2:31.211	2:32.873 C-Q1	2:31.647 C-R	2:32.194 C-R	+1.135 C-R	133.5 C-R	43.294 C-R	57.954 C-R	29.575 C-R	20.388 C-R
19	BMW 325i/is (1989)	Tim Anastopoulos	EP	07, 107	2:32.319 E-R	2:32.319	2:32.431 E-Q3	2:32.319 E-R	2:32.827 E-R	+1.399 E-R	132.2 E-Q3	44.391 A-R	58.428 A-R	30.057 A-R	20.915 A-R
20	BMW Z3 2.5L (1999)	Doug Piner 2+ cars	EP	06	2:32.973 G-Q3	2:32.973	2:32.973 G-Q3	2:36.526 G-R	2:37.199 G-R	+0.631 G-R	137.0 C-Q1	43.523 C-Q1	59.990 C-Q2	30.117 C-Q1	20.481 C-P1
21	BMW Z3 2.8L (1998)	Bryce McGuire	EP	27, 27x	2:33.139 C-Q1	2:32.645	2:33.139 C-Q1				132.4 C-P1, C-Q1, C-Q2	43.718 C-Q2	58.485 C-Q1	29.877 C-Q1	20.565 C-P3
22	BMW Z3 (1999)	Doug Piner 2+ cars	EP	06	2:33.230 E-R		2:33.577 E-Q2	2:33.230 E-R	2:34.027 E-R	+1.475 E-R	138.0 E-Q2
23	Mazda RX-3SP	Aaron Downey	EP	5	2:33.473 G-R		2:59.442 G-Q2	2:33.473 G-R	2:34.125 G-R	+1.786 G-R	133.8 G-R
24	Honda S2000 (2004)	Aaron Johnson	EP	08	2:33.516 E-R		2:34.349 E-Q2	2:33.516 E-R	2:35.443 E-R	+2.350 E-R	135.1 E-R
25	Mazda Miata (1999)	James Simaras	EP	55	2:33.829 A-R	2:33.454	2:39.040 A-Q3	2:33.829 A-R	2:34.723 A-R	+2.234 A-R	131.5 A-R	43.897 A-R	59.145 A-R	30.140 A-R	20.272 A-R
26	Nissan 240Z (1973)	Lance Loughman	EP	20, 122	2:34.410 E-Q3		2:34.410 E-Q3	2:34.783 E-R	2:35.525 E-R	+1.187 E-R	135.4 E-R
27	Nissan 240Z (1973)	Heikki Silegren	EP	61	2:34.688 E-Q3		2:34.688 E-Q3	2:35.047 E-R	2:35.684 E-R	+0.900 E-R	133.0 E-Q2
28	Mazda RX-8	Thomas Burt 2+ cars	EP	0, 0x	2:34.766 A-R	2:34.394	2:39.874 A-Q3	2:34.766 A-R	2:35.338 A-R	+2.789 A-R	132.8 A-R	44.264 A-R	58.987 A-R	30.269 A-R	20.874 A-R
29	Mazda Miata (1999)	Joe Carr 2+ cars	EP	12, 12x	2:34.859 E-Q2	2:34.859	2:34.859 E-Q2	2:35.816 G-R	2:37.200 G-R	+1.805 G-R	133.5 E-Q2	44.592 C-Q1	1:00.339 C-R	30.495 C-Q1	20.903 C-P1
30	Mazda Miata (1995)	Don Tucker 2+ cars	EP	8, 9	2:35.309 E-R	2:35.309	2:35.825 E-Q3	2:35.309 E-R	2:37.471 E-R	+3.205 E-R	131.9 G-Q1	44.941 C-P1	1:02.310 C-P2	31.112 C-P1	21.120 C-P1
31	Fiat 124 Spider 2000 (1979)	John Baucom 2+ cars	EP	124	2:35.517 C-Q2	2:34.863	2:35.517 C-Q2	2:35.535 C-R	2:36.540 C-R	+3.266 C-R	133.0 C-Q2	44.373 C-Q2	59.520 C-R	30.354 C-Q2	20.616 C-Q2
32	Mazda RX-7 (1980)	Kurt Frietzsche	EP	40, 40x, 40a	2:35.876 C-P3	2:34.580	2:41.624 G-Q3	2:36.206 C-R	2:37.367 C-R	+3.317 C-R	130.3 A-P3	44.336 A-P3	59.305 A-P3	30.427 A-P3	20.512 A-R
33	Mazda RX-7	Rob Hummel	EP	80	2:36.873 G-Q2		2:36.873 G-Q2	2:39.275 G-R			128.6 G-Q2
34	Mazda RX-7 (1986)	Thomas Burt 2+ cars	EP	0	2:36.909 C-R	2:36.120	2:37.904 C-Q1	2:36.909 C-R	2:37.123 C-R	+2.850 C-R	129.7 C-Q1	44.947 C-Q1	59.606 C-R	30.320 C-R	21.247 C-R
35	BMW Z3 (1996)	Don Tucker 2+ cars	EP	9	2:37.009 A-R	2:36.486	2:47.047 A-Q3	2:37.009 A-R	2:39.620 A-R	+4.220 A-R	130.7 A-R	43.903 A-R	1:00.803 A-R	31.207 A-R	20.573 A-R
36	Mazda RX-7	Anthony Jimerson	EP	22	2:37.401 G-R		2:38.306 G-Q3	2:37.401 G-R	2:39.982 G-R	+3.613 G-R	130.6 G-Q3, G-R
37	BMW 325i/is (1987)	John Collins	EP	26	2:38.279 E-R		2:39.797 E-Q2	2:38.279 E-R	2:39.121 E-R	+1.813 E-R	130.6 E-R
38	Alfa Romeo Spider Duetto	John Baucom 2+ cars	EP	86	2:39.294 E-Q2		2:39.294 E-Q2	2:51.973 E-R			133.2 E-R
39	Mazda MX-5 (2006)	Whitfield Gregg	EP	17	2:40.913 C-Q1	2:40.143	2:40.913 C-Q1				126.7 C-Q1	45.714 C-Q1	1:01.562 C-Q1	30.998 C-Q1	21.869 C-P1
40	Mazda Miata (1993)	Mark Weber	EP	25, 70	2:41.339 E-Q3	2:40.885	2:41.339 E-Q3	2:41.419 A-R	2:42.488 A-R	+2.996 A-R	128.4 E-Q2	45.830 A-R	1:02.214 C-R	31.512 A-R	21.329 A-R
41	Mazda RX-7 (1989)	Joe Carr 2+ cars	EP	12	2:42.182 A-R	2:40.403	2:44.754 A-Q3	2:42.182 A-R	2:43.513 A-R	+2.886 A-R	132.6 A-P1	45.216 A-P1	1:02.106 A-P2	31.860 A-R	21.221 A-P1
42	Austin-Healey 3000 (1959)	Rich Walke	EP	75	2:42.279 A-R	2:41.388	2:45.526 A-Q3	2:42.279 A-R	2:44.030 A-R	+3.367 A-R	127.8 A-R	45.652 A-R	1:03.413 A-R	31.483 A-R	20.840 A-R
43	Mazda RX-7	Rich Olsen 2+ cars	EP	66	2:42.385 G-R		2:46.680 G-Q2	2:42.385 G-R	2:44.985 G-R	+9.082 G-R	128.8 G-Q2
44	Mazda RX-7 (1984)	Yuri Collazos	EP	77, 77a	2:45.445 C-R	2:44.668	2:46.024 C-Q1	2:45.445 C-R	2:46.686 C-R	+2.873 C-R	129.1 C-R	46.684 C-R	1:03.705 C-R	32.660 C-R	21.619 C-R
45	Mazda RX-7 (1983)	Steve Gaetjens	EP	66	2:46.098 C-Q1	2:45.285	2:46.098 C-Q1	2:53.177 C-R	2:57.318 C-R	+10.173 C-R	122.7 C-R	46.679 C-Q1	1:02.978 C-Q1	32.924 C-Q1	22.704 C-Q1
46	Mazda RX-8	Ron Olsen	EP	81	2:46.347 G-Q2		2:46.347 G-Q2	2:56.070 G-R			121.8 G-Q2
47	Mazda RX-7	Donald Walsh	EP	47	2:47.623 G-Q1		2:47.623 G-Q1	2:48.625 G-R	2:50.651 G-R	+2.604 G-R	121.7 G-R
48	Austin-Healey 3000 (1959)	Rich Olsen 2+ cars	EP	75	2:48.537 C-R	2:47.705	2:56.603 C-Q1	2:48.537 C-R	2:48.915 C-R	+1.139 C-R	122.7 C-R	47.650 C-R	1:04.301 C-R	33.101 C-R	22.653 C-R
49	Mazda MX-5 Cup	Thomas Burt 2+ cars >115%	EP	10b	3:25.363 A-P2	3:25.363					105.7 A-P2	56.655 A-P2	1:22.036 A-P2	39.705 A-P2	26.967 A-P2

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 → 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	Lap	Qual	Race	Trap	S1	S2	S3	S4
BMW Z3	EP	4	2:26.803Tyler Ladd	2:26.803Tyler Ladd	2:27.869Tyler Ladd	139.9Tyler Ladd	41.976Jon Brakke	56.917Jon Brakke	28.577Tyler Ladd	19.805Jon Brakke
BMW Z3 (1999)	EP	3	2:26.803Tyler Ladd	2:26.803Tyler Ladd	2:27.869Tyler Ladd	139.9Tyler Ladd	41.976Jon Brakke	56.917Jon Brakke	28.577Tyler Ladd	19.805Jon Brakke
BMW Z3 (1996)	EP	1	2:37.009Don Tucker	2:47.047Don Tucker	2:37.009Don Tucker	130.7Don Tucker	43.903Don Tucker	1:00.803Don Tucker	31.207Don Tucker	20.573Don Tucker
Mazda RX-7	EP	11	2:27.115John Hainsworth	2:27.115John Hainsworth	2:28.445John Hainsworth	140.3John Hainsworth	42.267John Hainsworth	56.874John Hainsworth	28.661John Hainsworth	19.830John Hainsworth
Mazda RX-7 (1990)	EP	1	2:27.115John Hainsworth	2:27.115John Hainsworth	2:28.445John Hainsworth	140.3John Hainsworth	42.267John Hainsworth	56.874John Hainsworth	28.661John Hainsworth	19.830John Hainsworth
Mazda RX-7 (1982)	EP	1	2:29.663Austin Bradshaw	2:29.663Austin Bradshaw	2:30.350Austin Bradshaw	138.2Austin Bradshaw	42.399Austin Bradshaw	57.624Austin Bradshaw	29.556Austin Bradshaw	19.850Austin Bradshaw
Mazda RX-7 (1980)	EP	1	2:35.876Kurt Frietzsche	2:41.624Kurt Frietzsche	2:36.206Kurt Frietzsche	130.3Kurt Frietzsche	44.336Kurt Frietzsche	59.305Kurt Frietzsche	30.427Kurt Frietzsche	20.512Kurt Frietzsche
Mazda RX-7	EP	4	2:36.873Rob Hummel	2:36.873Rob Hummel	2:37.401Anthony Jimerson	130.6Anthony Jimerson
Mazda RX-7 (1986)	EP	1	2:36.909Thomas Burt	2:37.904Thomas Burt	2:36.909Thomas Burt	129.7Thomas Burt	44.947Thomas Burt	59.606Thomas Burt	30.320Thomas Burt	21.247Thomas Burt
Mazda RX-7 (1989)	EP	1	2:42.182Joe Carr	2:44.754Joe Carr	2:42.182Joe Carr	132.6Joe Carr	45.216Joe Carr	1:02.106Joe Carr	31.860Joe Carr	21.221Joe Carr
Mazda RX-7 (1984)	EP	1	2:45.445Yuri Collazos	2:46.024Yuri Collazos	2:45.445Yuri Collazos	129.1Yuri Collazos	46.684Yuri Collazos	1:03.705Yuri Collazos	32.660Yuri Collazos	21.619Yuri Collazos
Mazda RX-7 (1983)	EP	1	2:46.098Steve Gaetjens	2:46.098Steve Gaetjens	2:53.177Steve Gaetjens	122.7Steve Gaetjens	46.679Steve Gaetjens	1:02.978Steve Gaetjens	32.924Steve Gaetjens	22.704Steve Gaetjens
BMW Z3 2.5L	EP	4	2:27.293Jon Brakke	2:27.293Jon Brakke	2:28.756Tyler Ladd	141.7Jesse Prather	41.873Jon Brakke	56.504Jon Brakke	28.770Jon Brakke	19.867Tyler Ladd
BMW Z3 2.5L (1999)	EP	3	2:27.293Jon Brakke	2:27.293Jon Brakke	2:28.756Tyler Ladd	140.8Jon Brakke	41.873Jon Brakke	56.504Jon Brakke	28.770Jon Brakke	19.867Tyler Ladd
BMW Z3 2.5L	EP	1	2:27.322Jesse Prather	2:27.322Jesse Prather	2:29.047Jesse Prather	141.7Jesse Prather
Mazda Miata	EP	8	2:28.600Chris Haldeman	2:28.777Jon Brakke	2:29.423Matt Reynolds	136.7Matt Reynolds	42.406Chris Haldeman	56.827Chris Haldeman	28.969Chris Haldeman	19.812Chris Haldeman
Mazda Miata (1999)	EP	4	2:28.600Chris Haldeman	2:28.993Chris Haldeman	2:31.119Tony Ave	136.4Chris Haldeman	42.406Chris Haldeman	56.827Chris Haldeman	28.969Chris Haldeman	19.812Chris Haldeman
Mazda Miata	EP	2	2:28.777Jon Brakke	2:28.777Jon Brakke	2:29.423Matt Reynolds	136.7Matt Reynolds
Mazda Miata (1995)	EP	1	2:35.309Don Tucker	2:35.825Don Tucker	2:35.309Don Tucker	131.9Don Tucker	44.941Don Tucker	1:02.310Don Tucker	31.112Don Tucker	21.120Don Tucker
Mazda Miata (1993)	EP	1	2:41.339Mark Weber	2:41.339Mark Weber	2:41.419Mark Weber	128.4Mark Weber	45.830Mark Weber	1:02.214Mark Weber	31.512Mark Weber	21.329Mark Weber
BMW 325i/is	EP	3	2:28.765Tim Schreyer	2:29.828Tim Schreyer	2:28.765Tim Schreyer	136.1Tim Schreyer	42.268Tim Schreyer	57.136Tim Schreyer	28.948Tim Schreyer	19.769Tim Schreyer
BMW 325i/is E30 (1987)	EP	1	2:28.765Tim Schreyer	2:29.828Tim Schreyer	2:28.765Tim Schreyer	136.1Tim Schreyer	42.268Tim Schreyer	57.136Tim Schreyer	28.948Tim Schreyer	19.769Tim Schreyer
BMW 325i/is (1989)	EP	1	2:32.319Tim Anastopoulos	2:32.431Tim Anastopoulos	2:32.319Tim Anastopoulos	132.2Tim Anastopoulos	44.391Tim Anastopoulos	58.428Tim Anastopoulos	30.057Tim Anastopoulos	20.915Tim Anastopoulos
BMW 325i/is (1987)	EP	1	2:38.279John Collins	2:39.797John Collins	2:38.279John Collins	130.6John Collins
Caterham 7 America	EP	1	2:29.394Peter Norton	2:29.394Peter Norton	2:30.284Peter Norton	135.5Peter Norton	42.702Peter Norton	57.134Peter Norton	28.848Peter Norton	19.796Peter Norton
BMW 328i/is E36	EP	3	2:30.206Bill Miller	2:30.206Bill Miller	2:30.224Bill Miller	140.7Bill Miller	42.671Bill Miller	58.130Cameron Wogrin	29.313Cameron Wogrin	19.992Cameron Wogrin
BMW 328i/is E36 (1998)	EP	1	2:30.206Bill Miller	2:30.206Bill Miller	2:30.224Bill Miller	140.7Bill Miller	42.671Bill Miller	59.852Bill Miller	29.719Bill Miller	20.175Bill Miller
BMW 328i/is (1997)	EP	1	2:30.518Cameron Wogrin	2:30.518Cameron Wogrin	2:30.665Cameron Wogrin	139.8Cameron Wogrin	42.693Cameron Wogrin	58.130Cameron Wogrin	29.313Cameron Wogrin	19.992Cameron Wogrin
BMW 328i/is E36	EP	1	2:31.375William Lamkin	2:31.375William Lamkin	2:32.938William Lamkin	140.2William Lamkin
Lotus/Caterham 7 America	EP	1	2:30.714Peter Norton	2:30.714Peter Norton	2:31.490Peter Norton	133.3Peter Norton
Triumph GT6	EP	1	2:31.647Anthony Parker	2:32.873Anthony Parker	2:31.647Anthony Parker	133.5Anthony Parker	43.294Anthony Parker	57.954Anthony Parker	29.575Anthony Parker	20.388Anthony Parker
BMW Z3 2.8L	EP	1	2:33.139Bryce McGuire	2:33.139Bryce McGuire		132.4Bryce McGuire	43.718Bryce McGuire	58.485Bryce McGuire	29.877Bryce McGuire	20.565Bryce McGuire
Mazda RX-3SP	EP	1	2:33.473Aaron Downey	2:59.442Aaron Downey	2:33.473Aaron Downey	133.8Aaron Downey
Honda S2000	EP	1	2:33.516Aaron Johnson	2:34.349Aaron Johnson	2:33.516Aaron Johnson	135.1Aaron Johnson
Nissan 240Z	EP	2	2:34.410Lance Loughman	2:34.410Lance Loughman	2:34.783Lance Loughman	135.4Lance Loughman
Mazda RX-8	EP	2	2:34.766Thomas Burt	2:39.874Thomas Burt	2:34.766Thomas Burt	132.8Thomas Burt	44.264Thomas Burt	58.987Thomas Burt	30.269Thomas Burt	20.874Thomas Burt
Fiat 124 Spider (2000)	EP	1	2:35.517John Baucom	2:35.517John Baucom	2:35.535John Baucom	133.0John Baucom	44.373John Baucom	59.520John Baucom	30.354John Baucom	20.616John Baucom
Alfa Romeo Spider Duetto	EP	1	2:39.294John Baucom	2:39.294John Baucom	2:51.973John Baucom	133.2John Baucom
Mazda MX-5	EP	2	2:40.913Whitfield Gregg	2:40.913Whitfield Gregg		126.7Whitfield Gregg	45.714Whitfield Gregg	1:01.562Whitfield Gregg	30.998Whitfield Gregg	21.869Whitfield Gregg
Mazda MX-5 (2006)	EP	1	2:40.913Whitfield Gregg	2:40.913Whitfield Gregg		126.7Whitfield Gregg	45.714Whitfield Gregg	1:01.562Whitfield Gregg	30.998Whitfield Gregg	21.869Whitfield Gregg
Mazda MX-5 Cup	EP	1	3:25.363Thomas Burt			105.7Thomas Burt	56.655Thomas Burt	1:22.036Thomas Burt	39.705Thomas Burt	26.967Thomas Burt
Austin-Healey 3000	EP	2	2:42.279Rich Walke	2:45.526Rich Walke	2:42.279Rich Walke	127.8Rich Walke	45.652Rich Walke	1:03.413Rich Walke	31.483Rich Walke	20.840Rich Walke

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

Runoffs 2020 → Runoffs 2024 2020-10-02 to 2024-10-01

2020-12-01 EP Mk2 VW Consistency and Cleanup of FP and HP Spec Lines

#29195 from Christopher Schaafsma · Rule change · TB 20-12 (2020-12 Fastrack)

fasterFP Volkswagen Golf and Jetta 1.8 lose 50 lbs each, to 1900. HP Jetta GLI engine code removed.

In Production, Spec Lines, Change as follows:
In FP:
"Volkswagen Golf
~~1.8~~ (GTI, GT, GL)
(85-92)"
Weight: "~~1950~~ 1900"
In FP:
"Volkswagen Jetta

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~~1.8~~ (GLI, GL)
(85-92)"
Weight: “~~1950~~ 1900"
In HP:
"Volkswagen Jetta
~~1780~~ (GLI, GL)
(85-92)"

2020-12-01 EP Correct Wording for Level 1 and Level 2 Induction Systems

#29406 from Ron Bartell · Rule change · TB 20-12 (2020-12 Fastrack)

neutralEP, FP, HP Level 1 and Level 2 induction systems: clarified carburetor and fuel injection rules, jets/needles/rods unrestricted in Level 2.

In Production, GCR section 9.1.5.E.1.b.1, make changes as follows:
"All inducted air must pass through the venturi(s) of the car’s carburetor(s). Any carburetor(s) with restricted venturi(s) must
retain such venturi(s) in the original location within the carburetor. The throttle plate, shaft location, and bore diameter (as
measured at the throttle plate) shall remain as specified. ~~Carburetor jets, jet needles, metering rods and needle valves are~~
~~unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed.~~ The number and type of
carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. In all other regards, standard
and approved optional carburetor(s) are unrestricted.
All single carbureted cars may fit a permitted optional carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is

Show 19 more lines

specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are:"
In GCR section 9.1.5.E.1.b.4, make changes as follows:
"Fuel injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly. The stock
throttle body casting/housing must be retained. The inside dimensions of the throttle body casting/housing (as measured at the
throttle butterfly) ~~and all dimensions of the throttle butterfly~~ must remain stock, but ~~. T~~ the throttle body can otherwise be
ported and polished. The dimensions of the throttle butterfly must remain stock. The throttle butterfly shaft shall not be
relocated. The outside diameter of the portion of the throttle butterfly shaft located in the throttle body bore must be no
smaller than stock. The contour of the interface between the throttle butterfly shaft and the butterfly must remain stock. The
throttle butterfly and any throttle butterfly to shaft screws/bolts can be attached to the throttle butterfly shaft by any means
including welding or brazing. Holes or slots can be created in the throttle butterfly for purposes of idle adjustment only. The
number of injectors must remain stock. The mounting position and the injection point must be stock. Electronic fuel injection
may be substituted for the stock type of fuel injection. In all other respects the fuel injection system is unrestricted."
In GCR section 9.1.5.E.2.b.1, make changes as follows:
"All inducted air must pass through the venturi(s) of the car’s carburetor(s). Carburetor jets, jet needles, metering rods and
needle valves are unrestricted. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses can be removed. The
number and type of carburetors must not be changed from stock, unless otherwise specified by the vehicles spec line. In all
other regards, standard and approved optional carburetor(s) must not be modified.
All single carbureted cars may fit a permitted optional carburetor. Where the use of one (1) 40 DCN, DCNF, IDF carburetor is
specified, a permitted optional carburetor may be substituted. Permitted optional carburetors are:"

2020-12-01 EP Weight Reduction for Datsun Roadster

#29409 from Samuel Neave · Rule change · TB 20-12 (2020-12 Fastrack)

fasterEP Datsun SRL 311U Roadster minimum weight reduced to 1925 lbs from 2000 lbs.

In EP Spec Line, Nissan/Datsun SRL 311U Roadster, change Weight as follows:
"~~2000~~ 1925"

2020-12-01 EP EP TR8 Adjustment

#29512 from Jeffrey Young · Rule change · TB 20-12 (2020-12 Fastrack)

fasterEP Triumph TR8 78-81 weight reduced from 2600 to 2500 lbs.

In EP Spec Lines, Triumph TR8 (78-81), change weight as follows:
"~~2600~~ 2500"

2021-01-01 EP Alternate Front Brake Rotors and Calipers for EP AH 3000

#29893 from Rich Walke · Rule change · TB 21-01 (2021-01 Fastrack)

neutralEP Austin-Healey 3000 Mk. I, II, III now allows TR-6 front calipers and discs as alternate.

In EP, Spec Lines, Austin-Healey 3000 Mk. I, II, III, add to Brakes Alt.: mm/(in.) as follows:
"Rear Disc: #H82462 Front calipers & discs from TR-6 (std. or alt)"

2021-04-01 EP Please Classify Mazda3 in FP

#30165 from John MacGowan · Rule change · TB 21-04 (2021-04 Fastrack)

neutralMazda 3 S 04-08 classified in EP at 2350 lbs minimum, 2.26L DOHC, 12.0:1 compression, .500" valve lift limit.

In EP, classify Mazda 3 S (04-08) as follows:

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

2021-05-01 EP Change Classification of 84-87 Mazda 626 from FP to HP

#30350 from David Reiter · Rule change · TB 21-05 (2021-05 Fastrack)

neutral84-87 Mazda 626 reclassified from FP to HP with 2300–2415 lbs weight, 1998cc SOHC, dual 32mm carbs.

In HP Spec Lines, classify Mazda 626 (84-87):

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

2021-05-01 EP Fiat X1/9 brake rotors

#30423 from Daniel Snow · Rule change · TB 21-05 (2021-05 Fastrack)

neutralFP Fiat X1/9 brake rotors change to 257 (10.1) x 12 (.407) solid disc.

In FP Spec Line, Fiat X-1/9 & Bertone 1300, change Brakes Alt. as follows:
"(F&R) 257 (10.0 1) x 12 (.40 7) Solid Disc (Lancia/Fiat)"
In FP Spec Line, Fiat X-1/9 & Bertone, change Brakes Alt. as follows:
"(F&R) ~~Lancia~~ 257 (~~9.875~~ 10.1) x 12 (.40 7) Solid Disc (Lancia/Fiat)"

2021-05-01 EP NC MX-5 year range correction E&O

#30503 from Josh Smith · Rule change · TB 21-05 (2021-05 Fastrack)

neutralEP Mazda MX-5 year range corrected from 06-14 to 06-15.

In EP Spec Lines, Mazda MX-5 (06-14) change as follows:
"(06-14 5)"

Applies to Mazda MX-5 on this page: Whitfield Gregg, Thomas Burt

2021-06-01 EP Clarify Application of Percentage Based Weight Penalties

#30669 from Production Committee · Rule change · TB 21-06 (2021-06 Fastrack)

slowerEP, FP, HP clarifies percentage weight penalties sum first, then apply to base weight, rounding to nearest pound.

In GCR, Section 9.1.5.C. add as follows:
"5. For percentage-based weight penalties, all applicable percentage values shall be summed first, and then applied to the
vehicle’s minimum specified base weight, as listed in the PCS. The minimum vehicle weight shall be rounded to the nearest
pound. For example, a car with a 1950lbs minimum specified base weight, that’s running a non-stock gear-engagement
transmission and non-stock brake rotors and/or calipers, would calculate its minimum weight as follows:
5% transmission penalty + 2% brakes penalty = 7% total penalty
7% total penalty * 1950 lbs base weight = 2086.5 lbs
2086.5 lbs rounded to nearest pound = 2087 lbs minimum weight"

2021-07-01 EP Lotus/Caterham 7 America Request

#30392 from Larry Svaton · Rule change · TB 21-07 (2021-07 Fastrack)

unclearEP Lotus/Caterham 7 America carburetor changed from IT fuel injection prep to fuel injection.

In EP Spec Lines, Lotus / Caterham 7 America, change as follows:
Carburetor No. & Type: "I~~T fuel injection prep~~ Fuel injection"
Notes: "~~Engine is limited to IT preparation except modifications permitted in sections 9.1.5.E.2.e, 9.1.5.E.2.f, and 9.1.5.E.2.h.~~"

Applies to Lotus/Caterham 7 America on this page: Peter Norton

2021-07-01 EP Reclassify Daimler SP 250

#30721 from William Jarrell · Rule change · TB 21-07 (2021-07 Fastrack)

neutralDaimler SP 250 classified in EP at 2165 lbs with 2548 cc OHV 8-cylinder engine.

In EP Spec Lines, classify Daimler SP 250, as follows:

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

2021-08-01 EP Request to Allow F22c Engine for 2000-2003 Honda S2000

#30548 from Michael Unger · Rule change · TB 21-08 (2021-08 Fastrack)

unclearHonda S2000 (00-03) reclassified as EP Prep with F22c engine option: 1997cc or 2157cc, weight 2450–2636 lbs depending on displacement.

In EP Spec Lines, delete Honda S2000 (00-03) and Honda S2000 (04-09) in their entirety.
In EP Spec Lines, classify Honda S2000 as follows:

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

2021-08-01 EP Request a review of the S14 240SX in EP.

#30873 from Brett Whisenant · Rule change · TB 21-08 (2021-08 Fastrack)

fasterEP Nissan 240-SX S13/S14 loses 200-210 lbs minimum weight; comp ratio rises to 12.0:1, valve lift to .500.

In EP Spec Lines, Nissan 240-SX S13/S14 (91-98), change as follows:
Weight (lbs):
"~~2600~~ 2400
*~~2665~~ 2460
**~~2730~~ 2520"
Notes: "Comp. Ratio limited to ~~10.5:1~~ 12.0:1. Valve lift limited to .~~450~~ 500”."

2021-10-01 EP E&O; MR2 Track

#31120 from Greg Amy · Rule change · TB 21-10 (2021-10 Fastrack)

neutralHP Toyota MR-2 1.6L (85-89) track corrected to 15.47 inches front and rear.

In the HP "Toyota MR-2 1.6L (85-89)" spec line, please correct the Track column as follows:
"1532 47 / 1532 47"
In GCR, Section 9.1.5.C.4, please change as follows:
"Track specifications will be set at 103% of the car’s stock track, plus 2.5 inches."

2021-12-01 EP 944S2 Restrictor

#31396 from KEVIN Patterson · Rule change · TB 21-12 (2021-12 Fastrack)

slowerEP Porsche 944S2 89-91 requires 56mm flat plate intake restrictor; comp ratio max 12.0:1, valve lift max 0.500".

In EP Spec Lines, Porsche 944S2 (89-91), change Notes as follows:
"Comp. Ratio limited to 12.0:1, Valve lift limited to .500”, Dry sump is allowed. 56mm Flat Plate Intake Restrictor is required. In
order to facilitate the installation of the FPR, additional spacers/plates may be added to convert the mating area of the throttle
body and the intake manifold into a flat surface. These pieces must maintain the stock 60mm throttle body bore, the FPR must be
a separate piece that can be independently removed and measured, and the total thickness of all pieces (including the FPR)
cannot add up to more than 1” in thickness. Can use the stock fuel tank if stock rear bumper and bumper support structure
retained."

2021-12-01 EP Classing Clarification for 1986 Toyota Corolla FX16

#31527 from Brian Heffron · Rule change · TB 21-12 (2021-12 Fastrack)

neutralHP Corolla GTS RWD (84-87) added at 2300 lbs; HP Corolla FX16 FWD (87-88) added at 2260 lbs; old Corolla (84-87) removed.

In HP Spec Lines, delete the Toyota Corolla (84-87) Spec Line in its entirety.
In HP Spec Lines, classify the Toyota Corolla GTS (RWD) (84-87):

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

2022-01-01 EP Porsche 968 Engine Questions

#31478 from Hayes Flynn · Rule change · TB 22-01 (2022-01 Fastrack)

fasterEP Porsche 968 intake valve size increased from 37 to 39.0 mm.

In EP Spec Lines, Porsche 968 (92-95), change Intake Valve size as follows:
"(I) 37 39.0/(1.46 54)"

2022-01-01 EP PCS E. 2. n. 4. Add Axle Shaft to Allow FWD the Same Freedom

#31592 from Chris Schaafsma · Rule change · TB 22-01 (2022-01 Fastrack)

neutralEP, FP, HP front-wheel-drive cars may alter body and suspension to install alternate transmission, transaxle, and axle shaft.

In Production, GCR sections 9.1.5.E.1.n.4. and 9.1.5.E.2.n.4. change as follows:
"For rear wheel drive cars, the transmission tunnel and tunnel cover can be altered to allow the installation of an alternate
transmission and/or driveshaft. For front wheel drive cars, the body, unibody, frame, suspension crossmembers/subframes and
their components may be altered to the extent required to allow the installation of an alternate transmission, transaxle
and/or ~~driveshaft~~ axle shaft."

2022-01-01 EP BMW Z3 2.5L Spec Line

#31724 from William Etherington · Rule change · TB 22-01 (2022-01 Fastrack)

neutralEP BMW Z3 2.5L allows alternate throttle body from 92-95 325i with Turner adapter; head casting 1738400 permitted with specific blocks.

In EP Spec Lines, BMW Z3 2.5L, change Notes as follows:
"Comp. Ratio Limited to 12.0:1, Valve lift limited to .500”. ~~To replace stock drive-by-wire throttle body, a~~ Alternate throttle body
from BMW 92-95 325i (part #13541748105) is permitted only with Turner Motorsports adapter plate (part #TEN9990850) is
~~permitted.~~ Cylinder head casting number 1738400 permitted with use of the allowed iron block (casting number 1748933 or
1738566)."

Applies to BMW Z3 on this page: Tyler Ladd, Jon Brakke, Doug Piner, Don Tucker

Applies to BMW Z3 2.5L on this page: Jon Brakke, Tyler Ladd, Doug Piner, Jesse Prather

Applies to BMW Z3 2.8L on this page: Bryce McGuire

2022-02-01 EP Throttle Body and Idle Air

#31800 from David Boles · Rule change · TB 22-02 (2022-02 Fastrack)

neutralEP, FP, HP classes allow stock/original idle control devices unmodified or completely removed with openings blocked.

In GCR, Section 9.1.5.E.1.b.1., change as follows:
“All inducted air must pass through the venturi(s) of the car’s carburetor(s), except that which passes through a stock/original
idle control device.“
In GCR, Section 9.1.5.E.1.b.4., change as follows:
“Fuel injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly), except
that which passes through a stock/original idle control device.“
In GCR, Section 9.1.5.E.1.b., add the following:
”9. Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed

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and any resulting openings blocked off. “
In GCR, Section 9.1.5.E.2.b.1., change as follows:
“All inducted air must pass through the venturi(s) of the cars carburetor(s), except that which passes through a stock/original
idle control device. “
In GCR, Section 9.1.5.E.2.b.4., change as follows:
“Fuel Injection: All inducted air must pass through the throttle body and be subject to control by the throttle butterfly), except
that which passes through a stock/original idle control device. “
In GCR, Section 9.1.5.E.2.b., add the following:
“9. Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed
and any resulting openings blocked off. “

2022-02-01 EP Porsche 968 Engine Questions

#31831 from Hayes Flynn · Rule change · TB 22-02 (2022-02 Fastrack)

neutralEP Porsche 968 (92-95) now allows dry sump.

In EP spec line "Porsche 968 (92-95)", add to Notes:
"Dry sump is allowed."

2022-02-01 EP Request weight reduction for 1979-1985 Mazda RX-7

#31833 from RON OLSEN · Rule change · TB 22-02 (2022-02 Fastrack)

fasterEP 1979-1985 Mazda RX-7 12A and 13B weight reduced by 50-53 lbs across all configurations.

In EP Spec Lines, Mazda RX-7 (12A/13B) (79-85), change Weight as follows:

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

Applies to Mazda RX-7 on this page: Austin Bradshaw, Kurt Frietzsche, Rob Hummel, Anthony Jimerson, Rich Olsen, Donald Walsh, Yuri Collazos, Steve Gaetjens

2022-03-01 EP 1999 3.8L Ford Mustang to EP?

#31635 from Chris Dercole · Rule change · TB 22-03 (2022-03 Fastrack)

fasterFord Mustang 99-03 classified to EP at 2700/2768/2835 lbs; 94-98 Mustang weight reduced to 2550/2614/2678 lbs.

In EP Spec Lines, Ford Mustang (94-98), change weight as follows:
~~"2700~~ 2550
*~~2768~~ 2614
**~~2835~~ 2678"
In EP Spec Lines, classify Ford Mustang (99-03) as follows:

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

2022-03-01 EP EP Adjustments

#31858 from Production Committee · Rule change · TB 22-01 (2022-01 Fastrack)

slowerEP BMW Z3 2.5L intake restrictor reduced from 59mm to 58mm flat plate.

Effective 3/1/2022 In EP, make changes to BMW spec lines as follows:
BMW Z3 2.5L - 59 58mm Flat Plate Intake Restrictor is required with both stock or alternate throttle body.
BMW 328i/is E36 (96-99) - 62mm Flat Plate Intake Restrictor is required.
BMW 328i/ci E46 (01-06) - 62mm Flat Plate Intake Restrictor is required.
BMW 325i/is E46 (01-06) - 60mm Flat Plate Intake Restrictor is required.
BMW 325i/is E36 (92-95) - 60mm Flat Plate Intake Restrictor is required.
BMW 325is M-Technic (1994) - 60mm Flat Plate Intake Restrictor is required.

2022-03-01 EP Improved Touring Tires

#32064 from Greg Amy · Rule change · TB 22-03 (2022-03 Fastrack)

neutralEP, FP, HP Improved Touring cars may use any DOT-approved tire per section 9.3.45 in Production class.

In Production, GCR Section 9.1.5.B.5, change as follows:
"Any Improved Touring car meeting all the requirements of ITCS 9.1.3 may compete in the Production class in which the same
make, model and engine displacement car is classified. For Improved Touring cars competing in Production, the level of
preparation and modifications will be as determined by ITCS 9.1.3 and not by PCS 9.1.5, however any DOT approved tire as
defined by 9.3.45 is allowed."

2022-04-01 EP Mazda RX8 with 13b Rotary

#32170 from John Warren · Rule change · TB 22-04 (2022-04 Fastrack)

neutralEP Mazda RX-8 13B carburetor rules clarified: dual 2bbl carb, fuel injected throttle body, or stock fuel injection permitted.

In EP Spec Lines, Mazda RX-8 (04-11) (alternate), make the following changes to Carburetor. No. & Type:
"Renesis: Fuel Injection. 13B: d (1) Auto-type 2 bbl carb w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle
body w/ 42mm choke(s) on a “dual-y” manifold, or stock 13B fuel injection."

Applies to Mazda RX-8 on this page: Thomas Burt, Ron Olsen

2022-04-01 EP Request Idle control valve clarification

#32178 from Joe Camilleri · Rule change · TB 22-04 (2022-04 Fastrack)

neutralEP and FP Production clarifies idle control valve rules: stock devices allowed original, removed with blocked ports, or mechanical replaced with electronic stock type.

In Production, GCR Section 9.1.5.E.1.b.9, add the following:
"Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed
and any resulting openings blocked off. A mechanical stock/original idle control device can be replaced with an electronic
stock/original type of idle control device, with the original mechanical idle ports in the throttle body blocked off."
In Production, GCR Section 9.1.5.E.2.b.9, add the following:
"Stock/original idle control devices can be utilized in their original, unmodified location and condition, or completely removed
and any resulting openings blocked off. A mechanical stock/original idle control device can be replaced with an electronic
stock/original type of idle control device, with the original mechanical idle ports in the throttle body blocked off."

2022-05-01 EP EP MX-5 Global Cup Car

#32218 from Production Committee · Rule change · TB 22-03 (2022-03 Fastrack)

slowerEP Mazda MX-5 Global Cup 16-22 minimum weight set to 2400 lbs; sequential gearbox allowed with +150 lbs penalty.

Effective 05/01/2022 In EP Spec Lines, Mazda MX-5 Global Cup (16-22), change as follows:
Weight (lbs): "~~see notes~~ 2400"
Notes: "Car preparation is limited to what is permitted by the MX-5 Global Cup rules, and the car must meet all MX-5 Global Cup
rules except as otherwise indicated within this spec line. Competitors must have the current MX-5 Global Cup rules in their
possession and present them upon request. Sequential gearbox is allowed with +150lbs."

Applies to Mazda MX-5 on this page: Thomas Burt

2022-05-01 EP Please Class BMW 128i in EP

#32370 from Mark Uhlmann · Rule change · TB 22-05 (2022-04 Fastrack)

neutralBMW 128i (08-13) classified in EP at 2700 lbs minimum with stock throttle body, 11.0:1 compression ratio, 0.400 in. valve lift limits.

In EP Spec Lines, classify the BMW 128i (08-13) as follows:

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

2022-05-01 EP Inconsistency in Body Work Descriptions

#32396 from Production Committee · Rule change · TB 22-05 (2022-04 Fastrack)

fasterEP/FP/HP open cars may now use carbon fiber hardtops if they retain OEM appearance in all exterior profiles.

In Production Category Specifications, GCR Section 9.1.5.E.9.a.12 change as follows:
"Open cars must remove convertible soft tops and all attaching bracketry and hardware. If the stock windshield is retained, OEM
and aftermarket hardtops are allowed. Aftermarket hardtops must retain OEM appearance in all exterior profiles~~, and carbon~~
~~fiber construction is not allowed~~. Any hardtop must be attached by positive fasteners."

2022-06-01 EP Subaru BRZ Model Years

#32500 from Steve Gaetjens · Rule change · TB 22-06 (2022-06 Fastrack)

neutralEP Subaru BRZ and Toyota 86/Scion FR-S model year ranges updated to 13-20.

In EP Spec Lines, Subaru BRZ (2013), change title changes:
"Subaru BRZ (13 - 20)"
In EP Spec Lines, Toyota Scion FR-S (2013), change title changes:
"Toyota 86 / Scion FR-S (13 - 20)"

2022-09-01 EP Request to classify VW New Beetle 2.5L in EP

#32725 from G. Metcalf · Rule change · TB 22-09 (2022-09 Fastrack)

neutralVW New Beetle 2.5L 5-cyl added to EP at 2400–2520 lbs, 2480 cc, fuel injection, comp ratio 12.0:1 max, valve lift 0.500" max.

In EP Spec Lines, classify Volkswagen New Beetle (06-11) as follows:

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

2022-09-01 EP Request Rotary Injection on Dual Y manifold

#32775 from James Lindenthal · Rule change · TB 22-09 (2022-09 Fastrack)

unclearEP Mazda RX-7 12A/13B gains fuel injection option on dual-y manifold with 42mm choke(s).

Effective November 1, 2022, in EP Spec Lines, change Carburetor. No. & Type as follows:
Mazda RX-7 (12A/13B) (79-85):
"12A: (1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold or (1) Auto-type 2
bbl w/42mm choke(s) on a “dual-y” manifold. 13B: (1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel
injected throttle body w/ 42mm choke(s) on a “dual-y” manifold, or stock 13B fuel injection."
Mazda RX-7 (13B) (86-91):
"(1) Auto-type 2 bbl w/ 42mm choke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/ 42mm choke(s) on a “dual-
y” manifold, or stock 13B fuel injection."

2022-09-01 EP Request for Corrado Stroke & Displacement Correction

#32985 from Douglas Hedges · Rule change · TB 22-09 (2022-09 Fastrack)

neutralEP VW Corrado 92-95 stroke corrected to 90.3 mm, displacement to 2792 cc.

In EP Spec Line, VW Corrado (92-95), change as follows:
Bore x Stroke mm/(in.): "81.0 x 90.4 3 (3.19 x 3.56)"
Displ. cc/(ci) (nominal): "278 92"

2023-01-01 EP Revise 79-85 RX7 Brake Spec Line Allowance

#33293 from David Mead · Rule change · TB 23-01 (2023-01 Fastrack)

unclearEP 79-85 RX-7 12A/13B brake spec simplification removes hub/rotor weight minimum allowance.

In EP Spec Line, Mazda RX-7 (12A/13B) (79-85), change Notes as follows:
"Level 1 dry sump, intake manifold porting permitted. ~~Alternate multi-piece hub and rotor allowed provided they are of the~~
~~same dimensions as original and weigh a minimum of 10.2 lbs.~~ 13B (only): Any 13B rotor housing and any non-turbo 6-port side
and/or intermediate housing permitted. Use of differential from 94-97 Mazda MX-5/ Miata permitted."

Applies to Mazda RX-7 on this page: Austin Bradshaw, Kurt Frietzsche, Rob Hummel, Anthony Jimerson, Rich Olsen, Donald Walsh, Yuri Collazos, Steve Gaetjens

2023-01-01 EP Request alternate carburetors for EP 280z

#33405 from Joe Harlan · Rule change · TB 23-01 (2023-01 Fastrack)

neutralEP 280Z carburetor option adds Hitachi-SU 1bbl 46mm throttle bores alongside fuel injection.

In EP Spec Lines, Nissan 280Z, change Carburetor. No. & Type as follows:
"(2) Hitachi-SU (1bbl) 46mm throttle bores, or fF uel injection."

2023-01-01 EP Fuel Injection 12a Mazda RX3

#33434 from Aaron Downey · Rule change · TB 23-01 (2023-01 Fastrack)

neutralEP Mazda RX-2, RX-3, RX-4, and 12A RX-7 now allow 2 bbl fuel injected throttle body w/ 42mm chokes on dual-y manifold.

In EP Spec Lines, Mazda RX-2, change Carburetor. No. & Type as follows:
"(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/
42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold."
In EP Spec Lines, Mazda RX-3 & 3SP (72-78), change Carburetor. No. & Type as follows:
"(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/
42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y” manifold."
In EP Spec Lines, Mazda RX-4 (74-78), change Carburetor. No. & Type as follows:
"(1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2 bbl w/

Show 6 more lines

42mm choke(s) on a “dual-y” manifold”
In EP Spec Lines, Mazda RX-7 (12A/13B) (79-85), change Carburetor. No. & Type as follows:
"12: (1) Nikki 4 bbl carburetor w/ primary choke(s) bored to match secondary choke(s) on a stock manifold, or (1) Auto-type 2
bbl w/ 42mm choke(s) on a “dual-y” manifold”, or (1) 2 bbl fuel injected throttle body w/42mm choke(s) on a “dual-y”
manifold. 13B: (1) Auto-type 2 bbl w/ 42mmchoke(s) on a “dual-y” manifold, (1) 2 bbl fuel injected throttle body w/42mm
choke(s) on a “dual-y” manifold, or stock 13B fuel injection."

Applies to Mazda RX-3SP on this page: Aaron Downey

Applies to Mazda RX-7 on this page: Austin Bradshaw, Kurt Frietzsche, Rob Hummel, Anthony Jimerson, Rich Olsen, Donald Walsh, Yuri Collazos, Steve Gaetjens

2023-01-01 EP Mazda RX3 - Weight Reduction

#33436 from Aaron Downey · Rule change · TB 23-01 (2023-01 Fastrack)

fasterEP Mazda RX-2, RX-3, RX-3SP, and RX-4 minimum weights reduced 50–52 lbs across all spec lines.

In EP Spec Lines, Mazda RX-2, change Weight as follows:
"~~1950~~ 1900
*~~1999~~ 1948
**~~2048~~ 1995"
In EP Spec Lines, Mazda RX-3 & 3SP (72-78), change Weight as follows:
"~~1950~~ 1900
*~~1999~~ 1948
**~~2048~~ 1995"

Show 4 more lines

In EP Spec Lines, Mazda RX-4 (74-78), change Weight as follows:
"~~2100~~ 2050
*~~2153~~ 2101
**~~2205~~ 2153"

Applies to Mazda RX-3SP on this page: Aaron Downey

2023-01-01 EP Request TR8 Dry Sump Allowance

#33460 from Jeff Young · Rule change · TB 23-01 (2023-01 Fastrack)

fasterEP Triumph TR8 78-81 now allowed to run dry sump.

In EP Spec Lines, Triumph TR8 (78-81), add to Notes as follows:
"Dry sump is allowed."

2023-01-01 EP Review Limited Prep Port Matching Rules

#33600 from Production Committee · Rule change · TB 23-01 (2023-01 Fastrack)

neutralEP, FP, HP cylinder head ports limited to 1 inch maximum depth matching from mating surface.

In Production Category Specifications, GCR section 9.1.5.E.2.e.5., change as follows:
"Cylinder head ports may be matched to the intake and exhaust manifolds to a depth of no more than 1 inch from the port
mating surface."

2023-01-01 EP 280ZX Classification Request

#33611 from Bill Coffey · Rule change · TB 23-01 (2023-01 Fastrack)

neutralEP Prep 280ZX (79-83) added to spec lines with 2425–2546 lbs, 2760cc SOHC 6-cyl, fuel injection, 12.0:1 compression limit, .500" valve lift limit.

In EP Spec Lines, add a spec line as follows:

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

2023-04-01 EP Investigate Parity of Z3

#33343 from Tim Schreyer · Rule change · TB 23-01 (2023-01 Fastrack)

slowerEP BMW Z3 2.5L intake restrictor reduced from 58mm to 56mm flat plate.

Effective 4/1/2023 In EP Spec Line BMW Z3 2.5L, change Notes as follows:
"58 56mm Flat Plate Intake Restrictor is required with both stock or alternate throttle body."

2023-06-01 EP 914-6 Valve Size Correction

#34185 from Kip VanSteenburg · Rule change · TB 23-06 (2023-05 Fastrack)

fasterEP Porsche 914-6 2.0L intake valves increase to 2.0 mm, exhaust valves corrected to 38.0 mm.

In EP Spec Lines, Porsche 914 - 6 2.0L, change Valves IN & EX mm/(in.) as follows:
"(I) 4~~1.9~~ 2.0/(1.65)
(E) 38.1 0/(1.50)"

2023-07-01 EP Correct Intake Valve Size on 1500cc Midget/Spitfire

#34419 from Production Committee · Rule change · TB 23-06 (2023-05 Fastrack)

neutralFP and HP Sprite, Midget, and Spitfire 1500 intake valve size corrected to 36.6/(1.44).

In FP Spec Lines, Austin-Healey Sprite Mk. I, II,III, IV MG Midget Mk I,II, III, IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.3~~/(1.44)"
In FP Spec Lines, Triumph Spitfire Mk. IV & 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"
In HP Spec Lines, Triumph Spitfire Mk. III & IV 1500, change Intake Valve Size as follows:
"(I) 36.6~~5.5~~/(1.440)"

2023-09-01 EP Hub Note Clean Up In EP TR8 Spec Line

#34649 from Jeff young · Rule change · TB 23-09 (2023-09 Fastrack)

neutralEP Triumph TR8 78-81 removes alternate front hub allowance note; stock hubs now required.

In the EP Spec Lines, Triumph TR8 (78-81), remove the following wording from Notes:
"~~Alternate front hubs are allowed provided they are of the same external dimensions as stock and weigh no less than the stock~~
~~hubs.~~"

2023-09-01 EP Triumph GT6 Adjustments

#34662 from ANTHONY PARKER · Rule change · TB 23-09 (2023-09 Fastrack)

unclearEP Triumph GT6 carburetors change from SU or Stromberg to 1.5" Auto-type.

In EP Spec Lines, Triumph GT6, change Carburetor. No. & Type as follows:
"(2) 1.5” ~~SU or Stromberg~~ Auto-type carburetor(s)"

Applies to Triumph GT6 on this page: Anthony Parker

2023-09-01 EP Triumph GT6 Adjustments: Brakes

#34663 from ANTHONY PARKER · Rule change · TB 23-09 (2023-09 Fastrack)

neutralEP Triumph GT6 brakes may now use TR-6 standard or alternate calipers and discs.

In EP Spec Lines, Triumph GT6, add the following to Brakes Alt.: mm/(in.):
"(F) Calipers & discs from TR-6 (std. or alt)"

Applies to Triumph GT6 on this page: Anthony Parker

2023-12-01 EP Porsche 944/924S Rule Change Request

#35002 from Adam Achepohl · Rule change · TB 23-12 (2023-12 Fastrack)

neutralEP Porsche 944/924S combines 2.5L and 2.7L variants with new weights: 2250–2415 lbs depending on engine and year.

In EP Spec Lines, delete the Porsche 944/924S 2.5L (2V) (83-88) spec line entirely, and create a new spec line for Porsche
944/924S 2.5L(2V) 2.7L(2V) (83-89) as follows:

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

2023-12-01 EP Triumph GT6 Adjustments

#35054 from ANTHONY PARKER · Rule change · TB 23-12 (2023-12 Fastrack)

fasterEP Triumph GT6 minimum weight reduced to 1800 lbs.

In EP Spec Lines, Triumph GT6, change weight as follows:
"~~1830~~ 1800"

Applies to Triumph GT6 on this page: Anthony Parker

2024-01-01 EP Request to Review Z3 2.5 Spec Line

#35073 from Tim Schreyer · Rule change · TB 24-01 (2024-01 Fastrack)

slowerEP BMW Z3 2.5L weight increases to 2500 lbs, 2563 lbs with turbo, 2625 lbs with supercharger.

In EP spec line, BMW Z3 2.5L, change weight as follows:
"~~2450~~ 2500
*~~2511~~ 2563
**~~2573~~ 2625"

Applies to BMW Z3 on this page: Tyler Ladd, Jon Brakke, Doug Piner, Don Tucker

Applies to BMW Z3 2.5L on this page: Jon Brakke, Tyler Ladd, Doug Piner, Jesse Prather

Applies to BMW Z3 2.8L on this page: Bryce McGuire

2024-01-01 EP Miata Alternate Head

#35253 from Don Tucker · Rule change · TB 24-01 (2024-01 Fastrack)

fasterEP Mazda MX-5 1.8L 1990-97 minimum weight drops to 2150 lbs; 1994-97 variants to 2000, 2050, 2100 lbs respectively.

In EP Spec Lines, Mazda MX-5 /Miata 1.8L (90-97), change weight as follows:
"~~2200~~ 2150"
Mazda MX-5 /Miata (94-97)
"~~2035~~ 2000
*~~2086~~ 2050
**~~2137~~ 2100"

Applies to Mazda Miata on this page: Jon Brakke, Matt Reynolds, Don Tucker, Mark Weber

Applies to Mazda MX-5 on this page: Thomas Burt

2024-01-01 EP Triumph GT6 Adjustments

#35255 from Anthony Parker · Rule change · TB 24-01 (2024-01 Fastrack)

fasterEP Triumph GT6 dual 1.75" carbs weight drops to 1940 lbs; triple Weber 40 DCOE options consolidated.

In EP spec line, Triumph GT6, make the following change in the Notes section:
"Two (2) 1.75” auto-type carburetors @ 1970 40 lbs. Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive. ~~Three (3) Weber 40mm DCOE w/28mm venturi on individual~~
~~runner manifold @ 2020 lb.~~"

Applies to Triumph GT6 on this page: Anthony Parker

2024-01-01 EP Honda S2000 throttle body

#35272 from Aaron Johnson · Rule change · TB 24-01 (2024-01 Fastrack)

fasterEP Honda S2000 fuel injected throttle body inside diameter increases from 62mm to 64mm.

In EP spec line, Honda S2000, make the following changes to its spec line:
Fuel Injected Equipped Throttle Body Inside Diameter: "62 64"
Notes: "Comp. Ratio limited to 12.0:1. Valve lift limited to .500”. An adaptor plate can be used to mount the 62mm throttle body
from '00-05 to the '06-09 intake manifold. The adaptor plate can be no more than 1.25" thick, and its bore must not exceed the
"Fuel Injected Equipped Throttle Body Inside Diameter" maximum spec of 64mm."

Applies to Honda S2000 on this page: Aaron Johnson

2024-01-01 EP Correction within Triumph TR8 Spec Line

#35315 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

neutralEP Triumph TR8 dry sump allowance moved from carburetor line to notes section.

In EP spec line, Triumph TR8 (78-81), move the "Dry sump allowed" wording to the appropriate location as follows:
Carburetor. No. & Type: “Zenith Stromberg carbs or fuel injection. ~~Dry sump is allowed.~~”
Notes: “Comp. Ratio limited to 12.0:1, Valve lift limited to .500”. Dry sump is allowed.”

2024-01-01 EP Correction to EP 924S/944 Spec Line

#35317 from Production Committee · Rule change · TB 24-01 (2024-01 Fastrack)

neutralEP Porsche 944/924S 2.5L and 2.7L weight minimums corrected: 2479cc to 2306/2363 lbs, 2681cc to 2358/2415 lbs.

In EP spec line, Porsche 944/924S 2.5L (2V) / 2.7L (2V) (83-89), change Weight as follows:

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

2024-02-01 EP Update 1988-1991 Civic to Match 1988-1991 CRX

#35399 from Enrik Benazic · Rule change · TB 24-02 (2024-01 Fastrack)

fasterHP Honda Civic 1.5 (88-91) weight reduced to 2175 lbs base, 2229 lbs with power adder, 2284 lbs with two.

In HP, make the following weight change:
Honda Civic 1.5 (88-91)
~~“2245~~ 2175
*~~2301~~ 2229
**~~2357~~ 2284”

2024-03-01 EP GCR Correction - Redundant HP Spec Lines

#35623 from Production Committee · Rule change · TB 24-03 (2024-03 Fastrack)

neutralHP removes four redundant VW spec lines: Rabbit Cabriolet 1780, Scirocco 1588, Scirocco 1780 8-valve, Scirocco 1588.

In HP Spec Lines, delete the following redundant spec lines in their entirety:
Spec line #10 - VW Rabbit Cabriolet 1780
Spec line #3 - VW Scirocco 1588
Spec line #4 - VW Scirocco 1780 (8-valve) (83-88)
Spec line #5 - VW Scirocco 1588

2024-06-01 EP NIssan 300ZX Z31 to EP

#35830 from Murphy Nichols · Rule change · TB 24-06 (2024-06 Fastrack)

neutralNissan 300ZX 84-89 classified to EP at 2550 lbs minimum, 2960cc 6-cyl SOHC, fuel injection, 12.0:1 compression limit, 0.500" valve lift limit.

In EP Spec Lines, classify Nissan 300ZX (84-89), as follows:

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

2024-06-01 EP RX7 1993 and Up Request In EP Spec Lines, classify

#36031 from Edward Zabinski · Rule change · TB 24-06 (2024-06 Fastrack)

neutralMazda RX-7 92-97 newly classified EP Prep Level 2 at 2200–2310 lbs with 13B 6-port rotary engine.

Mazda RX-7 (92-97) as follows:

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

2024-06-01 EP Clean-up Multiple EP RX-8 Spec Lines In EP

#36156 from Production Committee · Rule change · TB 24-06 (2024-06 Fastrack)

neutralEP Mazda RX-8 (04-11) alternate spec line removed; one primary line remains.

Spec Lines, make the following changes to the two Mazda RX-8 spec lines.
Remove spec line entirely:
~~Mazda RX-8 (04-11)~~
Remove the wording "alternate":
Mazda RX-8 (04-11)~~(alternate)~~
Spec Mazda (SM/SMX) None.

2024-08-01 EP Errant entry in HP production line item

#36231 from Angus Crome · Rule change · TB 24-08 (2024-08 Fastrack)

neutralHP Volkswagen Golf and Jetta 85-92 track correction: front 1537mm (60.5in), rear 1529mm (60.2in).

In HP Spec Lines, change Track (F/R)mm/(in.) as follows:
Volkswagen Golf (GTI, GT, GL) (85-92): "2 1537/1529 (60.5/60.2)"
Volkswagen Jetta (GLI, GL) (85-92): "2 1537/1529 (60.5/60.2)"

Runoffs 2024 → Runoffs 2025 2024-10-01 to 2025-09-29

2024-11-01 EP 1275 HP Spridget Level 2 Only

#36518 from Darryl Saylor · Rule change · TB 24-09 (2024-09 Fastrack)

fasterHP Sprite and Midget 1275cc and 1098cc Level 2 compression ratio raised to 12.0:1.

In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1275cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"
In HP Spec Lines, Austin-Healey Sprite MkI, II, III, IV MG Midget (ALL) - Level 2 - 1098cc, change Notes as follows:
"(Effective 11/1/2024) Compression ratio limited to 11 12.0:1"

2024-11-01 EP NA Miata Track Width Correction

#36902 from Production Committee · Rule change · TB 24-11 (2024-11 Fastrack)

neutralEP Mazda Miata front and rear track widths increased to 1516/1534 mm (59.7/60.4 in.) across all generations.

In EP Spec Lines, Track (F/R) mm/(in.), change as follows:
Mazda MX-5 /Miata 1.6L (-1993) - ~~"1478/1491 (58.2/58.7)~~ 1516/1534 (59.7/60.4)"
Mazda MX-5 /Miata 1.8L (90-97) - ~~"1483/1509 (58.4/59.4)~~ 1516/1534 (59.7/60.4)"
Mazda MX-5 /Miata (94-97) - "~~1483/1509 (58.4/59.4)~~ 1516/1534 (59.7/60.4)"

2024-12-01 EP Triumph GT6 Adjustments

#37112 from Anthony Parker · Rule change · TB 24-12 (2024-12 Fastrack)

slowerEP Triumph GT6 switches to three Weber 40 DCOE carbs with 28mm chokes, weight rises 50 lbs to 1990.

In EP Spec Lines, make the following changes in the "Triumph GT6" spec line:
Carburetor No. & Type: (2): "~~1.5”~~ 1.75" Auto-type carburetor(s)"
Notes: "~~Two (2) 1.75” auto-type carburetors @ 1940 lbs.~~ Three (3) Weber 40 DCOE on IR manifold with 28mm chokes @ 1990
lbs. Laycock overdrive, May use 5 speed gearbox w/o overdrive."

2025-01-01 EP Request to Reduce Weight of BMW 325i/is E30 (84-91) Spec Line

#37119 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

fasterEP BMW 325i/is E30 (84-91) weight reduced 50–52 lbs across three spec lines to 2150, 2204, 2258.

In EP SPEC LINES, BMW 325i/is (E30) (84-91), change Weight as follows:
"~~2200~~ 2150
*~~2255~~ 2204
**~~2310~~ 2258"

Applies to BMW 325i/is on this page: Tim Schreyer, Tim Anastopoulos, John Collins

2025-02-21 EP Effective date for Jan 2025 GCR updates

#37654 from Doug Piner · Rule change · TB 25-02 (2025-02 Fastrack)

slowerEP BMW Z3 2.5L requires 52mm flat plate intake restrictor; Z3 2.8L 55mm; 328i/is E36 58mm; 328i/ci E46 58mm; 325i/is E46 56mm; 325i/is E36 56mm; 325is M-Technic 56mm.

In EP Spec Lines, add to Notes as follows:
BMW Z3 2.5LL "(Effective 2/21/2025) 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 2/21/2025) 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 2/21/2025) 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 2/21/2025) 56mm Flat Plate Intake Restrictor is required."

2025-03-01 EP Request Competition Adjustment to BMW Z3 2.5L

#37120 from Tim Schreyer · Rule change · TB 25-01 (2025-01 Fastrack)

slowerEP BMW Z3 and 3-series models get smaller intake restrictors: Z3 2.5L to 52mm, Z3 2.8L to 55mm, 328i to 58mm, 325i to 56mm.

In EP Spec Lines, change Notes as follows:
BMW Z3 2.5LL "(Effective 3/1/2025) ~~56mm~~ 52mm Flat Plate Intake Restrictor is required."
BMW Z3 2.8L (97-00): "(Effective 3/1/2025) ~~59mm~~ 55mm Flat Plate Intake Restrictor is required."
BMW 328i/is E36 (96-99): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 328i/ci E46 (01-06): "(Effective 3/1/2025) ~~62mm~~ 58mm Flat Plate Intake Restrictor is required."
BMW 325i/is E46 (01-06): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325i/is E-36 (92-95): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."
BMW 325is M-Technic (1994): "(Effective 3/1/2025) ~~60mm~~ 56mm Flat Plate Intake Restrictor is required."

2025-03-01 EP Interpretation of Production Rules on Mirrors

#37235 from Lawrence Slivinski · Rule change · TB 25-03 (2025-03 Fastrack)

neutralEP, FP, HP: interior or exterior mirrors meeting rule 9.3.36 now permitted.

In GCR, add new rule as Section 9.1.5.E.10.f:
"Any interior or exterior mirror(s) that meets rule 9.3.36 may be used."

2025-03-01 EP Weight Reduction for Honda S2000

#37466 from Michael Unger · Rule change · TB 25-03 (2025-03 Fastrack)

fasterEP Honda S2000 1997cc base loses 75 lbs to 2375; 2157cc base loses 60 lbs to 2450.

In EP, Spec Lines make the following weight changes:

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

2025-03-01 EP Mazda 1999 Miata 1.8L

#37488 from Joe Carr · Rule change · TB 25-03 (2025-03 Fastrack)

fasterEP Mazda MX-5/Miata 99-05 minimum weight drops to 2100 lbs, 2153 lbs with power adder, 2205 lbs with two adders.

In EP Spec Lines, make the following weight change:
Mazda MX-5 /Miata (99-05):
"~~2150~~ 2100
*~~2204~~ 2153
**~~2258~~ 2205"

2025-04-01 EP Request for Classification of Chevrolet Spark

#37755 from Kristian Smith · Rule change · TB 25-04 (2025-04 Fastrack)

neutralChevrolet Spark 16-22 classified HP Pre at 1850 lbs minimum weight, fuel injected, 1399 cc.

In HP Spec Lines, classify the Chevrolet Spark (16-22):

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

2025-04-01 EP Request to Lower Ford Festiva Minimum Weight to 1600 LBS

#37939 from Doug DeRonne · Rule change · TB 25-04 (2025-04 Fastrack)

fasterHP Ford Festiva 88-93 minimum weight drops to 1600 lbs, variants to 1640 and 1680 lbs; compression ratio raised to 11.0:1.

In HP Spec Lines "Ford Festiva (88-93)" change as follows:
Weight:
"~~1700~~ 1600
*~~1743~~ 1640
**~~1785~~ 1680"
Notes:
"Compression ratio limited to ~~10.5~~ 11.0:1. Valve lift limited to .450”."

2025-06-01 EP Base Weight Adjustment for H-Production X1/9 Spec Lines

#38255 from Matthew Brannon · Rule change · TB 25-06 (2025-06 Fastrack)

fasterHP Fiat X-1/9 base weights reduced 50–53 lbs across 1300 and 1500 spec lines.

In HP Spec Lines, change Weight as follows:
Fiat X-1/9 & Bertone1500: “~~1790~~ 1740 *~~1835~~ 1784 **~~1880~~ 1827”
Fiat X-1/9 1300: “~~1650~~ 1600 *~~1691~~ 1640 **~~1733~~ 1680”
Fiat X-1/9 1300: “~~2060~~ 2010”
Fiat X-1/9 1500: “~~1950~~ 1900”

2025-07-01 EP BMW Z4 update

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

slowerEP BMW Z4 03-05 restricted to 52mm flat plate intake restrictor.

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

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

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

fasterEP Fiat 124 Spider 1600 & 2000 weight drops 50 lbs to 2000; carburetors gain 2mm chokes to 36mm.

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."

Applies to Fiat 124 Spider 2000 on this page: John Baucom

Runoffs 2025 → Runoffs 2026 2025-09-29 to 2026-09-28

2025-10-01 EP HP Plymouth Arrow spec omission

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

neutralHP Plymouth Arrow transmission max speeds clarified to 4 or 5.

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

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

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

neutralEP, FP, HP wheel diameter added to Appendix G as absolute maximum specification.

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

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

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

neutralEP, FP, HP throttle body inside dimensions must remain stock with +/-.25mm tolerance; butterfly dimensions stock in FP, HP only.

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 EP Please Lower Weight of 280Z

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

fasterEP Nissan 280Z minimum weight reduced from 2560 to 2400 lbs.

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

2025-11-01 EP Miata Weight Adjustment Follow Up

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

fasterEP Mazda MX-5 1.8L 90-97 weight reduced to 2125 lbs from 2150 lbs.

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 EP Weight Break for 1098 Midget / Sprite

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

fasterHP Austin-Healey Sprite/Midget 1098cc minimum weight drops 80 lbs to 1550.

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

2025-11-01 EP HP Volvo 142 spec omission

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

slowerHP Volvo 142/142E gains compression ratio limit 12.0:1 and valve lift limit .425".

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 EP HP Mini DOHC 1.6

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

slowerHP Mini Cooper 07-15 valve lift reduced to .390", from .450".

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 EP Add to Rabbit description

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

neutralFP and HP Volkswagen Rabbit descriptions updated: Convertible changed to Cabriolet in FP; Cabriolet added to three HP engine variants.

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 EP Clean-up 9.1.5.E.7e

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

neutralEP, FP, HP: rear drum brake to disc conversion clarified; rotors solid, diameter limited to largest front rotor permitted.

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~~

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~~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 EP Add TB size to Ford Mustang (94-98) Spec Line

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

neutralEP Ford Mustang (94-98) fuel injected throttle body inside diameter specified at 60.

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

2025-12-01 EP TR2 Notes E&O

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

unclearEP Triumph TR2-TR4A allows 5-speed gearbox without overdrive; removes Weber carb and weight specification.

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 EP Balance of Power

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

slowerEP BMW Z3 2.5L restrictor reduced 52mm to 50mm, weight increased to 2550 lbs base; five other BMW models get smaller restrictors.

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"

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

2026-01-01 EP Request to Update E30 BMW Throttle Body Diameter Verbiage

#39363 from Tim Schreyer · Rule change · TB 26-01 (2026-01 Fastrack)

neutralEP BMW 325i/is E30 throttle body specified as 60mm in fuel injection notes.

In EP Spec Line BMW 325i/is E30 (84-91), change Drivetrain Notes as follows:
"Fuel Injection, TB: 60mm"

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

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

neutralEP Mazda MX-5 94-97 front track widens to 1516 mm (59.7 in.), rear to 1534 mm (60.4 in.).

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)"

Applies to Mazda Miata on this page: Jon Brakke, Matt Reynolds, Don Tucker

Applies to Mazda MX-5 on this page: Thomas Burt

2026-05-01 EP Triumph GT6 Spec Change.

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

fasterEP Triumph GT6 auto-type drivetrain choke increases from 44mm to 45mm.

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

Applies to Triumph GT6 on this page: Anthony Parker

2026-06-01 EP Honda S2000 Hardtop

#40138 from John Wilson · Rule change · TB 26-06 (2026-06 Fastrack)

neutralEP Honda S2000 now permits Mugen hardtop P/N 0000-04-2312 or equivalent.

In EP Spec Lines, Honda S2000, add to Chassis Notes the following:
"Mugen hardtop (P/N 0000-04-2312), or an aftermarket equivalent, is permitted."

Applies to Honda S2000 on this page: Aaron Johnson

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

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

neutral1996-2000 Honda Civic CX/DX/LX with D16Y7 engine newly classified in HP.

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

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

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

neutralHP Sprite/Midget 1275 allows MG-B alternate intake manifold with 1.5" SU carbs; balance tube shortening and flange modification permitted.

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 EP HP Honda Civic (92-95)

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

fasterHP Honda Civic DX/LX (92-95) wheels widen to 15x7, weight drops to 2350 lbs.

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 EP Mini Cooper Compression Ratio

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

fasterHP Mini Cooper 02-06 compression ratio increases from 10.6 to 11.0:1.

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.