BoP Lab / Buttonwillow Raceway Park
FC vs FV vs FE2 pace at Buttonwillow Raceway Park
Quickest here: FC 1:11.935 Peter West, Cal Club 2023 qualifying · FV 1:58.898 Mace Gjerman, Cal Club 2026 race · FE2 1:12.402 Blake Pigeon, Cal Club 2023 qualifying
| Event | FC | FV | FE2 | ||||||||||||
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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%) | 2:02.562Gavin Sweeney · fastest of 7 · top 5 within 3.3s+0.208s (+0.17%) | 1:58.898Mace Gjerman · fastest of 7 · top 5 within 6.0s-2.299s (-1.90%) | 124.6Gavin Sweeney+21.2 mph (+20.5%) | +13.584squal +17.425s | 112.9%qual 116.6% | 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% | ||
4 rule changes (FC: 2, FE2: 2)1 weight · 3 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. · FE and FE2 Enterprises must use bubble tail P/N WM138014; FE2 allows only this configuration. · FE2 allows driver safety and comfort modifications for disabled drivers with SCCA approval, not transferable to other drivers.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 | 2:02.354Gavin Sweeney · fastest of 5 · top 5 within 10.3s | 2:01.197Gavin Sweeney · fastest of 5 · top 5 within 9.6s | 103.5Gavin Sweeney | +12.675squal +12.287s | 111.7%qual 111.2% | 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% | ||
8 rule changes (FC: 6, FV: 2)2 cars added · 1 engine · 1 suspension & brakes · 1 tyres & wheels · 1 weight · 2 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. · FV ferrous rotor no longer required to be smooth; may have up to three pad cleaning grooves per side. · 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. · FV front wheel bearings wording clarified in GCR 9.1.1.C.10.G. · 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.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 | |||||||||||
31 earlier rule changes on record, in force before Cal Club 2023 (from 2019)5 tyres & wheels · 5 weight · 1 aero · 20 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. · FV connecting rod rules add Brian Crower part #BC6417 and Newland Group #4M113077 as allowed replacements. · FV connecting rods minimum weight 425.0 grams, center-to-center length 130 ± 0.10/-0.25 mm specified. · FC chassis/frame section reorganized: anti-intrusion panels between main tubes clarified, suspension mounting restrictions strengthened, firewall requirements reworded. · FV connecting rod suppliers clarified: Crower SP93280B and BrianCrower BC6417 allowed as direct replacements. · FC Zetec ECU requirements clarified: Pectel T2 or Performance PE-3 required with specific communications ports and SCCA tune-file/map. · FV allows Crower SP93280B and Brian Crower Racing Rods as direct replacement connecting rods, must meet OEM minimum weight. · 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. · FC Pinto engine loses 10 lbs to 1190; Pinto aluminum head loses 10 lbs to 1190; Zetec loses 10 lbs to 1210. · 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. · FV now allows 4 bolt wheels, previously restricted to 5 bolt wheels. · FV now supports 4-bolt pattern wheels in addition to existing wheel specifications. · FV rain tire requirement changed to Hoosier #44266 22.5 x 5.0 x 15 WET or W3. · FV allows non-spec Hoosier tires in Regional races until 2020-01-01, when spec tires become required. · FV allows rear tires on front of car; mandates Hoosier #43337 fronts and #43353 rears, plus #44266 rain tire from 2020-01-01. · 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. · FV wheels clarified: 15" x 4J standard or 15" x 4.5J steel VW, 5-bolt pattern, same track dimensions. · FV exhaust outlet location tightened to 1–4 inches behind rearmost body part. · FV wheels now permit 15-inch 4.5J steel wheels within C.2 track dimensions, adding to standard 4J options. · FV exhaust opening can now extend to 4 inches behind body rear, previously 3 inches maximum. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · FV front track maximum 52.500" and rear track 49.125"-50.750" no longer prohibits spacers. · FV disc brake assembly minimum weight clarified to 16.5 lbs total; caliper minimum weight requirement removed. · FV intake manifold horizontal tube measurement locations clarified between 1.500" and 8.000" on short side. · 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.