BoP Lab / Buttonwillow Raceway Park
FC vs FE2 vs FF pace at Buttonwillow Raceway Park
Quickest here: FC 1:11.935 Peter West, Cal Club 2023 qualifying · FE2 1:12.402 Blake Pigeon, Cal Club 2023 qualifying · FF 1:51.118 Eric Poulsen, Cal Club 2025 race
| Event | FC | FE2 | FF | ||||||||||||
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| Qual best | Race best | Trap | Qual best | Race best | Trap | vs FC | % of FC | Qual best | Race best | Trap | vs FC | % of FC | |||
| Cal Club 2026 CALCL262026-02-21 | 1:45.137Robert Armington · fastest of 4 · top 4 within 25.0s-4.930s (-4.48%) | 1:45.314Robert Armington · fastest of 4 · top 4 within 12.9s-3.208s (-2.96%) | 147.5Bill Wallschlaeger+33.0 mph (+28.9%) | 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%) | -5.061squal -5.872s | 95.2%qual 94.4% | 1:53.098Edward Erlandson · fastest of 2+1.054s (+0.94%) | 1:54.741Edward Erlandson · fastest of 2+3.623s (+3.26%) | 133.7Edward Erlandson+19.0 mph (+16.5%) | +9.427squal +7.961s | 109.0%qual 107.6% | ||
7 rule changes (FC: 2, FE2: 2, FF: 3)2 tyres & wheels · 1 weight · 4 wording · FC USF2000 Tube Frame may use Hewland LD200 4-speed H-pattern as alternative to Hewland JL-200 5-speed sequential. · FC F2000 Metrik ZF2 minimum weight reduced to 1220 lbs. · FF clarifies alternative tire eligibility for cars homologated 1989 or earlier with rocker arm or outboard suspension on all four corners. · FE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. · FF adds rocker arm and outboard suspension cars optional bias ply and VFF tires; removes front-as-rear rule, adds mixing restrictions. · FE2 allows driver safety and comfort modifications for disabled drivers with SCCA approval, not transferable to other drivers. · FF allows older cars with rocker arm or outboard suspension to use bias ply slicks or VFF tires instead of radials.show
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| Cal Club 2025 CALCL252025-02-22 | 1:50.067Paul MacFarlane · only car+38.132s (+53.01%) | 1:48.522Paul MacFarlane · only car | 114.4Paul MacFarlane | 1:39.358Paul Marino · fastest of 4 · top 4 within 1.5s+26.956s (+37.23%) | 1:39.712Paul Marino · fastest of 4 · top 4 within 1.7s | 127.2Tom Hope | -8.810squal -10.709s | 91.9%qual 90.3% | 1:52.044Eric Poulsen · only car | 1:51.118Eric Poulsen · only car | 114.7Eric Poulsen | +2.596squal +1.977s | 102.4%qual 101.8% | ||
11 rule changes (FC: 6, FF: 5)2 cars added · 2 weight · 1 engine · 1 tyres & wheels · 5 wording · FC tire limit reduced to four dry and four wet for Regional/Major/Super Tour, eight for Runoffs. · FF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs. · FF and FC cars with sequential gearbox must add 10 lbs. to minimum weight, down from 25 lbs. · FF Honda Fit allows Fast Forward 0.25mm oversize pistons PN FF800-110 as alternative; piston diameter spec clarified to 2.8835 inches. · FF VTEC activation valve must function; EGR blanking plate rule clarified with Fast Forward part numbers. · FC adds F2000 Metrik ZF2 with Ford Zetec engine and four-piston Brembo calipers as spec-line car. · F600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional. · FF Honda Fit gains Fast Forward FF800-100 oversize piston ring pack option. · FC tire marking rule clarified: four dry and wet tires for Regionals, eight each for Runoffs; damaged tire replacement procedures revised. · USF2000 Van Diemen with Mazda MZR LF-DE 2.0L added as spec line car in FC; removed from FX. · FF Honda Fit engine adds Fast Forward part number alternatives for intake, exhaust, oil system, and scavenge pump components.show
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| Cal Club 2023 CALCL232023-02-24 | 1:11.935Peter West · fastest of 3 · top 3 within 2.6s | 1:12.402Blake Pigeon · fastest of 3 · top 3 within 1.6s | +0.467s qual | 100.6% qual | |||||||||||
25 earlier rule changes on record, in force before Cal Club 2023 (from 2019)4 weight · 2 engine · 1 tyres & wheels · 18 wording · FC/FF PE3-8400 ECU monitor firmware version reduced from V3.04.50 to V3.04.35. · FC Ford Zetec Performance Electronics ECU model renamed PE-3 to PE3-8400; Monitor firmware updated to V3.04.50. · FC chassis/frame section reorganized: anti-intrusion panels between main tubes clarified, suspension mounting restrictions strengthened, firewall requirements reworded. · FC Zetec ECU requirements clarified: Pectel T2 or Performance PE-3 required with specific communications ports and SCCA tune-file/map. · FC composite anti-intrusion panels of non-uniform thickness limited to eight fasteners per side. · FC tire marking rules clarified: competitor responsible for declaring, marking, and logging tires with Tech before qualifying or race. · FF block relief permitted only as needed to fit allowed crankshaft. · FC Pinto engine loses 10 lbs to 1190; Pinto aluminum head loses 10 lbs to 1190; Zetec loses 10 lbs to 1210. · FF class cylinder head may now have optional coolant bleed line fitting to top of head for air release. · FF Honda LC1 ECU by HPD permitted effective 12/1/2020, must use HPD lambda sensor. · FC: Pectel T2 and Performance PE-3 ECU maps clarified; SCCA Club or 2013 Pro map required. · FE2 oil cooler wording clarified: optional air-to-oil cooler allowed, Setrab 50-625-7612 or equivalent max 13 inches wide by 6.5 inches high. · FC Zetec engine minimum weight increases 20 lbs to 1220 lbs. · FF Honda LC1 ECU implementation date changed from 3/1/2020 to pending availability of support materials. · FF alternator changes from not required to optional. · FF allows Honda HPD LC1 low-cost ECU with lambda sensor; E1 ECU no longer supported but existing units permitted if sealed. · FF rain tyres now allow Hoosier W3 Radial in addition to existing Hoosier Wet option. · FC Zetec connecting rods now allow Eagle #CRS5483F3D in addition to original Ford. · FC adds Mahle #930169439 piston as alternate option to existing Ford, Sealed Power, and United Engine choices. · FE and FE2 minimum weight increased to 1270 lbs including driver; spring options and tire warmer ban added. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · FF Honda Fit permitted to use 0.25mm oversize pistons, cylinder honing increased to 73.315mm maximum. · FF heat shield rule clarified: thermal wrap allowed on manifold exterior if easily removable for inspection. · FF catch tank minimum capacity rules clarified: coolant catch tank now one U.S. pint minimum, oil catch tank one U.S. quart minimum. · FC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams.show
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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. "% of FC" is the class's best as a share of FC's best at the same event (100% is level, less is quicker): weather and track condition move every class together, so this compares across years where the raw times do not. It still breaks when FC's own field changes or one session was wet and another dry. 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.