BoP Lab / Virginia International Raceway

EP at Virginia International Raceway

Sectors are not comparable across all of these events. Sector times and the theoretical lap use North Carolina Region Dual Conference Hoosier SCCA Super Tour & Test Day @ Virginia International Raceway, North Carolina 2025, Spring Sprints 2026 only. Runoffs 2023 (sectors cut at different points) counts towards whole-lap times and trap speed only.

One lap is left out as timing errors (far too short to be a lap of this track). The rest of those sessions, sectors included, is used.

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	BMW Z3 2.5L (1999)	Greg Ira	EP	2	2:04.050 D-R			2:04.050 D-R	2:05.713 D-R	+2.641 D-R	144.6 D-R
2	BMW Z3 2.5L (1999)	Jon Brakke	EP	89	2:04.189 D-R			2:04.189 D-R	2:05.994 D-R	+3.735 D-R	142.8 D-R
3	Lotus/Caterham 7 America (2000)	Peter Norton 2+ cars	EP	5	2:04.201 D-R			2:04.201 D-R	2:06.165 D-R	+3.286 D-R	134.6 D-R
4	Mazda RX-7 (1990)	John Hainsworth	EP	95	2:04.458 C-R2	2:04.141	2:05.345 C-Q	2:04.458 C-R2	2:04.870 C-R2	+1.493 C-R2	140.2 B-R2	44.515 C-R2	46.004 C-R1	33.622 C-R2
5	Caterham Seven	Peter Norton 2+ cars	EP	50, 0	2:04.871 C-R2	2:04.278	2:06.217 B-Q1	2:04.871 C-R2	2:05.555 C-R1	+2.082 C-R1	137.2 B-Q1	44.470 C-R2	46.069 C-R1	33.739 C-R2
6	Mazda MX-5	Tony Ave	EP	28	2:07.147 A-Q1	2:06.971	2:07.147 A-Q1	2:07.977 A-R1	2:24.204 A-R2	+1.326 A-R2	130.4 A-R1	45.007 A-Q1	47.573 A-Q1	34.391 A-Q1
7	BMW Z3	Doug Piner 2+ cars	EP	01, 06	2:07.895 C-R1	2:07.278	2:08.331 C-Q	2:07.895 C-R1	2:08.806 C-R2	+1.801 C-R2	140.7 B-Q1	45.516 C-Q	47.279 C-R2	34.483 C-R2
8	Mazda Miata (1995)	Don Tucker	EP	9	2:09.237 C-R2	2:09.119	2:11.985 C-Q	2:09.237 C-R2	2:09.987 C-R2	+1.636 C-R2	132.9 C-R2	46.003 C-R2	48.141 C-R2	34.975 C-R2
9	BMW Z3 2.5L (1999)	Doug Piner 2+ cars	EP	06	2:09.347 D-R			2:09.347 D-R	2:10.635 D-R	+3.616 D-R	138.9 D-R
10	BMW Z3	Bryce McGuire	EP	88, 27	2:09.982 C-R2	2:09.244	2:11.329 C-Q	2:09.982 C-R2	2:10.416 C-R2	+1.045 C-R2	130.2 C-R2	46.261 C-R2	48.297 C-R2	34.686 C-R2
11	Mazda RX-7 (1982)	Austin Bradshaw	EP	41	2:10.118 D-R			2:10.118 D-R	2:11.017 D-R	+3.064 D-R	131.5 D-R
12	Nissan 240Z (1973)	Heikki Silegren	EP	61	2:10.174 D-R			2:10.174 D-R	2:10.983 D-R	+2.185 D-R	139.6 D-R
13	Mazda RX-7 (1987)	Steve Rose	EP	30	2:12.995 D-R			2:12.995 D-R	2:14.934 D-R	+3.762 D-R	124.3 D-R
14	Alfa Romeo Spider	John Baucom 2+ cars	EP	86	2:13.068 B-R1	2:13.068	2:13.326 B-Q1	2:13.068 B-R1	2:14.506 B-R1	+2.353 B-R1	130.2 B-Q1	47.490 B-Q1	49.724 B-Q1	36.069 B-Q1
15	Triumph TR8 (1980)	Jeff Young	EP	44	2:13.652 D-R			2:13.652 D-R			135.9 D-R
16	Nissan 240Z (1973)	Lance Loughman	EP	122	2:14.182 D-R			2:14.182 D-R	2:38.950 D-R	+1.846 D-R	131.8 D-R
17	Mazda RX-7 (1986)	Sean Saggese	EP	148	2:14.234 D-R			2:14.234 D-R	2:15.262 D-R	+2.245 D-R	130.5 D-R
18	BMW 325i/is (E36) (1993)	Matthew Fritz	EP	14	2:14.306 D-R			2:14.306 D-R	2:15.384 D-R	+2.255 D-R	129.3 D-R
19	Ford Mustang (1998)	Ron Earp	EP	38	2:15.873 D-R			2:15.873 D-R	2:17.444 D-R	+3.930 D-R	126.7 D-R
20	Mazda RX-8 (2004)	Steve Eckerich	EP	18	2:15.883 D-R			2:15.883 D-R	2:17.283 D-R	+3.877 D-R	128.4 D-R
21	Triumph GT6 (1970)	Anthony Parker	EP	4	2:16.992 D-R			2:16.992 D-R	2:18.175 D-R	+3.369 D-R	119.3 D-R
22	Mazda MX-5	Whitfield Gregg	EP	17	2:17.271 B-Q2	2:16.939	2:17.271 B-Q2	2:18.406 B-R1	2:19.850 B-R2	+2.111 B-R2	122.8 B-R2	48.184 B-Q2	51.549 B-R2	37.206 B-Q1
23	BMW 325i/is (1994)	David Spillman	EP	136	2:17.360 D-R			2:17.360 D-R			137.0 D-R
24	BMW Z3 2.8L (1998)	Mark Bradley	EP	98	2:17.779 D-R			2:17.779 D-R	2:20.231 D-R	+5.925 D-R	128.2 D-R
25	Fiat 124 Spider	John Baucom 2+ cars	EP	86, 24	2:17.796 B-Q2	2:17.260	2:17.796 B-Q2	2:17.916 B-R2	2:19.154 B-R2	+3.982 B-R2	123.5 B-R2	48.906 B-Q2	51.223 B-R2	37.131 B-R2
26	Honda Civic Si (2008)	Greg Amy	EP	33	2:17.957 D-R			2:17.957 D-R			126.8 D-R
27	Mazda RX-7	Thomas Burt	EP	01	2:18.474 B-R2	2:18.094	2:20.764 B-Q2	2:18.474 B-R2	2:19.175 B-R2	+1.311 B-R2	122.4 B-R2	48.837 B-R2	51.684 B-R2	37.573 B-R2
28	Mazda Miata (1993)	Mark Weber	EP	50, 70	2:18.808 D-R	2:18.808	2:22.899 A-Q1	2:18.808 D-R	2:21.146 D-R	+5.165 D-R	126.6 A-Q1	49.972 A-Q1	53.089 A-Q1	38.654 A-Q1
29	Mazda RX-7 (1989)	John Bell	EP	162	2:18.812 D-R			2:18.812 D-R	2:20.944 D-R	+3.761 D-R	124.7 D-R
30	Mazda RX-7 (1988)	Michael Cooke	EP	17	2:18.980 D-R			2:18.980 D-R	2:19.850 D-R	+2.240 D-R	122.7 D-R
31	Mazda Miata	Robert Garrison	EP	06	2:20.546 C-R2	2:20.057		2:20.546 C-R2	2:20.780 C-R2	+0.783 C-R2	111.1 C-R2	49.337 C-R2	53.155 C-R2	37.565 C-R2
32	BMW Z4	Doug Piner 2+ cars	EP	03	2:21.015 A-R1	2:19.750	2:25.934 A-Q1	2:21.015 A-R1			128.6 A-R1	50.536 A-R1	51.324 A-R1	37.890 A-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. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

S1 SF → IM1
S2 IM1 → IM2
S3 IM2 → SF
SPd IM2 → IM3 0.02 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
BMW Z3 2.5L	EP	3	2:04.050Greg Ira		2:04.050Greg Ira	144.6Greg Ira
Lotus/Caterham 7 America	EP	1	2:04.201Peter Norton		2:04.201Peter Norton	134.6Peter Norton
Mazda RX-7 Convertible	EP	7	2:04.458John Hainsworth	2:05.345John Hainsworth	2:04.458John Hainsworth	140.2John Hainsworth	44.515John Hainsworth	46.004John Hainsworth	33.622John Hainsworth
Mazda RX-7 (1990)	EP	1	2:04.458John Hainsworth	2:05.345John Hainsworth	2:04.458John Hainsworth	140.2John Hainsworth	44.515John Hainsworth	46.004John Hainsworth	33.622John Hainsworth
Mazda RX-7 (1982)	EP	1	2:10.118Austin Bradshaw		2:10.118Austin Bradshaw	131.5Austin Bradshaw
Mazda RX-7 (1987)	EP	1	2:12.995Steve Rose		2:12.995Steve Rose	124.3Steve Rose
Mazda RX-7 (1986)	EP	1	2:14.234Sean Saggese		2:14.234Sean Saggese	130.5Sean Saggese
Mazda RX-7	EP	1	2:18.474Thomas Burt	2:20.764Thomas Burt	2:18.474Thomas Burt	122.4Thomas Burt	48.837Thomas Burt	51.684Thomas Burt	37.573Thomas Burt
Mazda RX-7 (1989)	EP	1	2:18.812John Bell		2:18.812John Bell	124.7John Bell
Mazda RX-7 (1988)	EP	1	2:18.980Michael Cooke		2:18.980Michael Cooke	122.7Michael Cooke
Caterham Seven	EP	1	2:04.871Peter Norton	2:06.217Peter Norton	2:04.871Peter Norton	137.2Peter Norton	44.470Peter Norton	46.069Peter Norton	33.739Peter Norton
Mazda MX-5	EP	2	2:07.147Tony Ave	2:07.147Tony Ave	2:07.977Tony Ave	130.4Tony Ave	45.007Tony Ave	47.573Tony Ave	34.391Tony Ave
BMW Z3	EP	2	2:07.895Doug Piner	2:08.331Doug Piner	2:07.895Doug Piner	140.7Doug Piner	45.516Doug Piner	47.279Doug Piner	34.483Doug Piner
Mazda Miata	EP	3	2:09.237Don Tucker	2:11.985Don Tucker	2:09.237Don Tucker	132.9Don Tucker	46.003Don Tucker	48.141Don Tucker	34.975Don Tucker
Mazda Miata (1995)	EP	1	2:09.237Don Tucker	2:11.985Don Tucker	2:09.237Don Tucker	132.9Don Tucker	46.003Don Tucker	48.141Don Tucker	34.975Don Tucker
Mazda Miata (1993)	EP	1	2:18.808Mark Weber	2:22.899Mark Weber	2:18.808Mark Weber	126.6Mark Weber	49.972Mark Weber	53.089Mark Weber	38.654Mark Weber
Mazda Miata	EP	1	2:20.546Robert Garrison		2:20.546Robert Garrison	111.1Robert Garrison	49.337Robert Garrison	53.155Robert Garrison	37.565Robert Garrison
Nissan 240Z	EP	2	2:10.174Heikki Silegren		2:10.174Heikki Silegren	139.6Heikki Silegren
Alfa Romeo Spider	EP	1	2:13.068John Baucom	2:13.326John Baucom	2:13.068John Baucom	130.2John Baucom	47.490John Baucom	49.724John Baucom	36.069John Baucom
Triumph TR8	EP	1	2:13.652Jeff Young		2:13.652Jeff Young	135.9Jeff Young
BMW 325i/is (E36)	EP	2	2:14.306Matthew Fritz		2:14.306Matthew Fritz	137.0David Spillman
BMW 325i/is (E36) (1993)	EP	1	2:14.306Matthew Fritz		2:14.306Matthew Fritz	129.3Matthew Fritz
BMW 325i/is (1994)	EP	1	2:17.360David Spillman		2:17.360David Spillman	137.0David Spillman
Ford Mustang	EP	1	2:15.873Ron Earp		2:15.873Ron Earp	126.7Ron Earp
Mazda RX-8	EP	1	2:15.883Steve Eckerich		2:15.883Steve Eckerich	128.4Steve Eckerich
Triumph GT6	EP	1	2:16.992Anthony Parker		2:16.992Anthony Parker	119.3Anthony Parker
BMW Z3 2.8L	EP	1	2:17.779Mark Bradley		2:17.779Mark Bradley	128.2Mark Bradley
Fiat 124 Spider	EP	1	2:17.796John Baucom	2:17.796John Baucom	2:17.916John Baucom	123.5John Baucom	48.906John Baucom	51.223John Baucom	37.131John Baucom
Honda Civic Si	EP	1	2:17.957Greg Amy		2:17.957Greg Amy	126.8Greg Amy
BMW Z4	EP	1	2:21.015Doug Piner	2:25.934Doug Piner	2:21.015Doug Piner	128.6Doug Piner	50.536Doug Piner	51.324Doug Piner	37.890Doug Piner

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 2023 → North Carolina Region Dual Conference Hoosier SCCA Super Tour & Test Day @ Virginia International Raceway 2023-09-23 to 2024-04-04

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 2.5L on this page: Greg Ira, Jon Brakke, Doug Piner

Applies to BMW Z3 on this page: Doug Piner, Bryce McGuire

Applies to BMW Z3 2.8L on this page: Mark Bradley

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 MX-5 on this page: Tony Ave, Whitfield Gregg

Applies to Mazda Miata on this page: Don Tucker, Mark Weber, Robert Garrison

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."

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.”

Applies to Triumph TR8 on this page: Jeff Young

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

North Carolina Region Dual Conference Hoosier SCCA Super Tour & Test Day @ Virginia International Raceway → North Carolina 2025 2024-04-04 to 2025-04-04

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)"

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"

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”."

North Carolina 2025 → Spring Sprints 2026 2025-04-04 to 2026-04-03

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.”

Applies to BMW Z4 on this page: Doug Piner

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 on this page: John Baucom

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"

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