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BoP Lab / Laguna Seca

P2 vs FC vs P1 pace at Laguna Seca

Class · click a class to switch, + to compare alongside (up to 4)
Reference class · the others' laps as a share of this one's at the same event, so years compare despite weather; + a class above to measure against it

Quickest here: P2 1:26.231 Chuck Bona, Hoosier SCCA Super Tour (San Francisco Region) race · FC 1:28.860 Jason Reichert, Hoosier SCCA Super Tour (San Francisco Region) qualifying · P1 1:21.626 Jim Devenport, Hoosier SCCA Super Tour (San Francisco Region) qualifying

EventP2FCP1
Qual bestRace bestTrapQual bestRace bestTrapvs P2% of P2Qual bestRace bestTrapvs P2% of P2
Hoosier SCCA Super Tour (San Francisco Region) ST19JUL262019-07-261:26.927Tim Day Jr · fastest of 5 · top 5 within 7.8s1:26.231Chuck Bona · fastest of 7 · top 5 within 6.8s116.8Tim Day Jr1:28.860Jason Reichert · fastest of 11 · top 5 within 0.8s1:29.754Jason Reichert · fastest of 11 · top 5 within 1.2s110.2James Hakewill+3.523squal +1.933s104.1%qual 102.2%1:21.626Jim Devenport · fastest of 6 · top 5 within 5.2s1:21.922Todd Slusher · fastest of 6 · top 5 within 4.1s121.3John Manfroy-4.309squal -5.301s95.0%qual 93.9%
22 earlier rule changes on record, in force before Hoosier SCCA Super Tour (San Francisco Region) (from 2019)3 induction · 2 weight · 1 engine · 1 removed · 14 wording · 1 other · P1 allows mechanical and solenoid shifters, prohibits electronic controls and pre-selected changes. · P1 bodywork minimum height provision moved to aerodynamic section; 115cm height limit for aero parts added. · P1 clarifies fender louver and brake duct rules, consolidating duplicative provisions in GCR 9.1.8.C. · P2 cars limited to power application on maximum two wheels, effective 2019-07-01. · P2 Enterprise minimum weight increases to 1375 lbs; peak horsepower of sealed ESR engine reduced per CRB specification. · P1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted. · P1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections. · FC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams. · P1 Engine Table reference cleaned up; no performance change. · P1 Mazda Renesis Rotary removed from Engine Table specification line. · P1 Staudacher and Honda K20A-FD2 engine table language cleaned up; no performance changes. · P1 closed cockpit single-seat cars moved from subsection J.5 to subsection B.4; prohibition unchanged. · P2 stock engine restrictor shrinks to 35.0mm and weight rises to 1025 lbs; modified engine restrictor to 34.0mm, weight to 1125 lbs; line B.5 restrictor to 33.0mm, weight to 1185 lbs. · P2 Line A.1 restrictor reduced from 40mm to 38mm. · P1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes. · FC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams. · P1 removes redundant TIR inlet restrictor provisions; SIR and flat plate restrictors remain required. · P1 Honda K20A-FD2 CN-spec clarifies allowed parts to OEM list only, no machining. · P1 engine table wording corrected; head designs removed from listed specifications. · P2 Spec Line cars now allow 1345cc Hayabusa stock engines at 1050 lbs with 30mm restrictor. · P2 Group CN Honda K20A-FD2 55mm restrictor implementation delayed from 1/1/2019 to 3/1/2019. · P2 Honda K20A-FD2 in CN chassis must use stock intake manifold with 64mm throttle body and 55mm restrictor at 1500 lbs minimum weight.showhide
  • P1 E&O Transmissions #27005wordingwordingP1 allows mechanical and solenoid shifters, prohibits electronic controls and pre-selected changes.
  • P1 Move minimum height provision to #27031wordingwordingP1 bodywork minimum height provision moved to aerodynamic section; 115cm height limit for aero parts added.
  • P1 Remove duplicative fender louver provision #27033wordingwordingP1 clarifies fender louver and brake duct rules, consolidating duplicative provisions in GCR 9.1.8.C.
  • P2 E&O Transmissions #27006otherslowerP2 cars limited to power application on maximum two wheels, effective 2019-07-01.
  • P2 Request to restrict all cars #26246weightslowerP2 Enterprise minimum weight increases to 1375 lbs; peak horsepower of sealed ESR engine reduced per CRB specification.
  • P1 Missing word E&O #26919wordingwordingP1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted.
  • P1 E&O correction to GCR 9.1.8.C.C. #26927wordingwordingP1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections.
  • FC E&O Wiseco piston and Crower connecting rod #26659wordingwordingFC Wiseco piston and Crower connecting rod part numbers updated; minimum weight 976 grams.
  • P1 Clean up reference to engine table #26648wordingwordingP1 Engine Table reference cleaned up; no performance change.
  • P1 Remove redundant spec line #26692removedremovedP1 Mazda Renesis Rotary removed from Engine Table specification line.
  • P1 Clean Up Engine Table Language #26590wordingwordingP1 Staudacher and Honda K20A-FD2 engine table language cleaned up; no performance changes.
  • P1 Move single-seat closed cockpit provision to #26376wordingwordingP1 closed cockpit single-seat cars moved from subsection J.5 to subsection B.4; prohibition unchanged.
  • P2 Change Engine Table Lines B.1 & B.5 #25777inductionslowerP2 stock engine restrictor shrinks to 35.0mm and weight rises to 1025 lbs; modified engine restrictor to 34.0mm, weight to 1125 lbs; line B.5 restrictor to 33.0mm, weight to 1185 lbs.
  • P2 Change Line A.1 restrictor size #26429inductionslowerP2 Line A.1 restrictor reduced from 40mm to 38mm.
  • P1 Correct errors in GCR section 9.1.8.C.J #26144wordingwordingP1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes.
  • FC Correct Wiseco piston and connecting rod #25809weightslowerFC Wiseco piston and Crower connecting rod assembly minimum weight increases from 555 to 976 grams.
  • P1 Remove redundant inlet restrictor provisions #25877wordingwordingP1 removes redundant TIR inlet restrictor provisions; SIR and flat plate restrictors remain required.
  • P1 Clarify Honda K20A-FD2 parts requirement #25949wordingwordingP1 Honda K20A-FD2 CN-spec clarifies allowed parts to OEM list only, no machining.
  • P1 Correct GCR section 9.1.8.C.J errors #25966wordingwordingP1 engine table wording corrected; head designs removed from listed specifications.
  • P2 Request to Allow 1345cc Hayabusa Engines for Spec Line P2 Cars #25595enginefasterP2 Spec Line cars now allow 1345cc Hayabusa stock engines at 1050 lbs with 30mm restrictor.
  • P2 Change CN inlet restrictor implementation date #25816wordingwordingP2 Group CN Honda K20A-FD2 55mm restrictor implementation delayed from 1/1/2019 to 3/1/2019.
  • P2 Clarify Honda K20A-FD2 parts requirement #25950inductionslowerP2 Honda K20A-FD2 in CN chassis must use stock intake manifold with 64mm throttle body and 55mm restrictor at 1500 lbs minimum weight.

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 P2" is the class's best as a share of P2'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 P2'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.