BoP Lab / Buttonwillow Raceway Park
F6 vs FB vs FE vs FE2 pace at Buttonwillow Raceway Park
Quickest here: FE2 1:08.250 Caleb Shrader, Super Tour Feb 2023 qualifying
| Event | F6 | FB | FE | FE2 | |||||||||||||
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| Qual best | Race best | Trap | Qual best | Race best | Trap | vs F6 | Qual best | Race best | Trap | vs F6 | Qual best | Race best | Trap | vs F6 | |||
| Super Tour Feb 2026 CALCL262026-02-21 | 1:39.265Jon McClintock · fastest of 3 · top 3 within 1.5s-0.093s (-0.09%) | 1:40.253Jon McClintock · fastest of 3 · top 3 within 2.2s+0.541s (+0.54%) | 156.6Paul Marino+29.4 mph (+23.1%) | ||||||||||||||
5 rule changes (FE: 3, FE2: 2)2 cars added · 2 wording · 1 other · FE adds engine modification restrictions, testing requirements, and drivetrain violation penalties with competition suspension. · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. · FE and FE2 Enterprise bubble tail part WM138014 now allowed; FE2 must use this configuration only. · FE2 minimum weight stays 1270 lbs; intake manifold part number changes to WM301061; ECU to G992012; mandatory spec parts expanded; bubble tail WM138014 now FE only; SADEV transmission no modifications allowed; brake rotor part numbers to W… · FE2 allows pre-approved driver safety and comfort seat and control modifications for drivers with disabilities, per logbook.show
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| Super Tour Feb 2025 CALCL252025-02-22 | 1:39.358Paul Marino · fastest of 4 · top 4 within 1.5s+31.108s (+45.58%) | 1:39.712Paul Marino · fastest of 4 · top 4 within 1.7s | 127.2Tom Hope | ||||||||||||||
7 rule changes (FE: 7)6 wording · 1 other · FE must use SCCA Part # WM803010 Brake Line to Control Arm covers if used, as delivered, fastened with zip ties or tape only. · FE and SRF protest fee rules redirected to GCR section 8.3.1.D for fees and procedure. · FE Hoosier contingency decal requirement reduced from five decals in specific locations to three decals on sides and front. · FE requires five Hoosier decals: one small on nose or front shock cover, one 12" on each front wing plate, one 12" on each lower floor panel before rear wheels. · FE rain light now must meet FIA Standard 8874-2019, Technical List No. 76, effective 1/1/2024. · FE allows racer's tape for crash repair, panel security, and heat exchanger opening control; seam taping banned. · FE SADEV transmission rule removes note that all ratios under review and could be updated prior to sealing.show
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| Super Tour Feb 2023 CALCL232023-02-24 | 1:08.250Caleb Shrader · fastest of 4 · top 4 within 5.8s | ||||||||||||||||
21 rule changes (FE: 19, FE2: 2)3 aero · 3 suspension & brakes · 2 tyres & wheels · 2 weight · 1 cars added · 8 wording · 2 other · FE drivers may now adjust brake bias manually during the race. · FE front and rear wing specifications clarified: adjustment ranges, shimming, Gurney flap sizes, mounting hardware, and measurement references refined. · FE engine heat shield and insulation between block and exhaust now permitted to protect fuel cell, filter, rail, lines. · FE tires must be run as delivered in sets of 4. · FE master cylinders clarified: Girling front .700" piston WM802005, rear .750" piston WM802006. · FE removes qualifying tire marking requirements and rain tire set rules; renumbers tire warmer prohibition. · FE radiator screens may not protrude more than ¼ inch in front of the outside vertical plane of the sidepods. · FE radiator screens now allowed, maximum ¼ inch from sidepod front vertical plane. · FE front springs change to 800 lbs Hypercoil WM203013 Silver; rear to 900 lbs Hypercoil WM203014 Silver. · FE Gurney flaps clarified: front wing secondary only at 0.500" ±0.030", rear wing at 0.250" ±0.030". · FE2 oil cooler rule clarified: Setrab 50-625-7612 or any cooler with max core 13 inches wide by 6.5 inches high allowed. · FE Gurney flap wicker bill clarified: permitted on front wing secondary elements only, not main plane. · FE2 and FE spring part numbers WM203013 front and WM203014 rear required date moved to November 1, 2020. · FE2 Mazda 2.0L MZR engine now permitted in all SCCA events at 1250 lbs minimum; FE 2.3L becomes Regional Only through 2019 Runoffs. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. · FE minimum weight rises to 1270 lbs; FE2 minimum weight rises to 1270 lbs; new spring options added; tire warmers prohibited. · FE Hoosier wet rear tire width increases from 7.5 to 8.0 inches, part number 44196 W3. · FE removes American Racer tires, mandates Hoosier dry tires 22.0 X 8.0-13 and 22.0 X 10.0-13, wet tires 22.0 X 7.5-13 and 22.0 X 9.0-13. · FE anti-roll bar links may be removed one per end for safety, but bars must stay connected. · FE and FE2 Enterprise bubble tail P/N WM138014 newly allowed for both classes.show
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| Super Tour Apr 2019 ST19APR262019-04-26 | |||||||||||||||||
1 earlier rule change on record, in force before Super Tour Apr 2019 (from 2019)1 tyres & wheels · FE Hoosier rain tyre part numbers updated: front 44195 W3, rear 44217 W3.show
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About this data
Best is the class's fastest lap in that event's qualifying or race sessions, with the driver who set it, how many cars set a time that session and how close the top five were; a best from fewer than three cars is greyed. With two or more classes, "vs" is the gap of each class's best to the first class's at the same event. Newest event first. The coloured figure under each value is the change from the previous event that has one (green is quicker, red slower). Whole laps only, so events with different sector layouts still compare. Weather and track condition are not accounted for.