Quickest here:P1 2:00.418 Matt Romer, Runoffs 2024 race
P1solid race · dashed qualifying · slower is lower
Event
P1
Qual best
Race best
Trap
Runoffs 2024 ROFF242024-10-01
2:00.476Chip Romer · fastest of 12 · top 5 within 1.5s-0.625s (-0.52%)
2:00.418Matt Romer · fastest of 9 · top 5 within 2.1s-1.452s (-1.19%)
168.3Jason Miller+8.7 mph (+5.4%)
27 rule changes (P1: 27)4 engine · 2 aero · 2 weight · 1 cars added · 1 induction · 17 wording · P1 now encourages unspecified engines including Diesel, hybrid, or electric via case-by-case request to Club Racing Board. · P1 removes redundant effective date language from engine stalling prohibition during SIR testing. · P1 Honda K20A-FD2 engine terminology corrected from 'spec' to proper series designation. · F600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional. · P1 4-cycle 2000cc restrictor increases to 32mm, weight rises to 1450 lbs; 2300cc restrictor to 31mm, weight to 1475 lbs. · P1 Group CN Honda K20A-FD2 removes engine modification restrictions; CRB may add intake restrictor. · P1 SIR testing procedure modified: vehicle deemed compliant if stalls within 3 seconds. · P1 Single Inlet Restrictor wording clarified; all intake air or fuel-air mixture must pass through it. · P1 ducted air rule clarified: cockpit opening, fender louvers, and engine bay heat escape devices exempt from heat exchanger requirement. · P1 cockpit length dimension corrected from 23.662 to 23.622 inches; height and extension limits clarified with metric-imperial equivalents. · P1 suspension covers must have symmetrical upper and lower surfaces, no airfoil shaping, cannot angle for downforce. · P1 aerodynamic devices limited to 1cm below lower surfaces rear of front axle; body panels covering suspension cannot be airfoil-shaped. · P1 forced induction banned: turbocharging and supercharging no longer allowed. · P1 motorcycle-based engines with individual throttle bodies must install flat plate restrictors within 4 inches of primary butterfly. · P1 bodywork rules clarified: cycle fenders prohibited, side body minimum height at front axle centerline required, air ducting for downforce banned. · P1 2-cycle 6-cylinder displacement increases to 1725 cc, restrictor shrinks to 40mm, minimum weight drops to 1275 lbs. · P1 splits 2000cc and 2300cc engines into separate spec lines H and I with dedicated minimum weights. · P1 Staudacher cars with 38.5mm flat plate intake restrictor reduced to 950 lbs minimum weight. · P1 adds 1355cc motorcycle-based engine spec line with no restrictor required, minimum weight 1075 lbs. · P1 tonneau cover wording clarified: equipment must be securely attached; covers allowed for minimum dimensions. · P1 Staudacher with 1005cc homologated before 1-1-2014 may run 38.5mm flat plate intake restrictor at 950 lbs minimum weight. · P1 Spec Lines C and G: intake restrictor rules clarified with specific displacement and weight thresholds; wording standardized. · P1 Spec Lines B, C, D maximum valves per cylinder set to 4, was NA. · P1 Spec Line A clarifies carburetor induction only, one per cylinder, balance tubes not allowed. · P1 Spec Line H notes clarify peripheral port or bridgeport allowed. · P1 Elan DP02 Mazda MZR sealed engine option removal effective 3/1/2021. · P1 engine table updates terminology from inlet to intake restrictor across multiple spec lines.showhide
Update GCR section 9.1.8.B.J.7 #35907wordingneutralP1 now encourages unspecified engines including Diesel, hybrid, or electric via case-by-case request to Club Racing Board.
Remove redundant effective date language in GCR 9.1.8.B.J.4 #35693wordingneutralP1 removes redundant effective date language from engine stalling prohibition during SIR testing.
Correct engine series terminology #35694wordingneutralP1 Honda K20A-FD2 engine terminology corrected from 'spec' to proper series designation.
Please correct omitted punctuation #34890engineneutralF600 Rotax 494, 493, 593 engines now require single expansion chamber and pull starter; electric starter optional.
Adjust restrictors and weights for Engine Table lines H and I #35229weightslowerP1 4-cycle 2000cc restrictor increases to 32mm, weight rises to 1450 lbs; 2300cc restrictor to 31mm, weight to 1475 lbs.
Revise Group CN Honda K20A-FD2 Spec Line #35337wordingunclearP1 Group CN Honda K20A-FD2 removes engine modification restrictions; CRB may add intake restrictor.
SIR Testing #34354wordingneutralP1 SIR testing procedure modified: vehicle deemed compliant if stalls within 3 seconds.
E&O Single Inlet Restrictor abbreviation, etc. #34369wordingneutralP1 Single Inlet Restrictor wording clarified; all intake air or fuel-air mixture must pass through it.
E&O Clean up ducted air provision #34410wordingneutralP1 ducted air rule clarified: cockpit opening, fender louvers, and engine bay heat escape devices exempt from heat exchanger requirement.
E&O - Correct dimensional equivalents #34018wordingneutralP1 cockpit length dimension corrected from 23.662 to 23.622 inches; height and extension limits clarified with metric-imperial equivalents.
November 2022 Rules Clarification for Suspension Covers #33615aeroslowerP1 suspension covers must have symmetrical upper and lower surfaces, no airfoil shaping, cannot angle for downforce.
Clarify body panel coverage of suspension components #33318aeroslowerP1 aerodynamic devices limited to 1cm below lower surfaces rear of front axle; body panels covering suspension cannot be airfoil-shaped.
E&O clarification regarding forced induction #33123inductionslowerP1 forced induction banned: turbocharging and supercharging no longer allowed.
Clarify authorization to use flat plate intake restrictor #32964wordingneutralP1 motorcycle-based engines with individual throttle bodies must install flat plate restrictors within 4 inches of primary butterfly.
E&O Clarification of Bodywork Rules #32468wordingneutralP1 bodywork rules clarified: cycle fenders prohibited, side body minimum height at front axle centerline required, air ducting for downforce banned.
Displacement & Weight Change Request for 2-Cycle 6 Cylinder #31609enginefasterP1 2-cycle 6-cylinder displacement increases to 1725 cc, restrictor shrinks to 40mm, minimum weight drops to 1275 lbs.
Move 2000cc and 2300cc engine options to individual spec lines #31012wordingneutralP1 splits 2000cc and 2300cc engines into separate spec lines H and I with dedicated minimum weights.
E&O Spec Line B notes #31095weightfasterP1 Staudacher cars with 38.5mm flat plate intake restrictor reduced to 950 lbs minimum weight.
Add 1355cc spec line #30890cars addedneutralP1 adds 1355cc motorcycle-based engine spec line with no restrictor required, minimum weight 1075 lbs.
E&O tonneau cover provision in cockpit opening section #30458wordingneutralP1 tonneau cover wording clarified: equipment must be securely attached; covers allowed for minimum dimensions.
Update Spec Line B Notes #30498wordingneutralP1 Staudacher with 1005cc homologated before 1-1-2014 may run 38.5mm flat plate intake restrictor at 950 lbs minimum weight.
Update Spec Lines C and G notes #30499wordingneutralP1 Spec Lines C and G: intake restrictor rules clarified with specific displacement and weight thresholds; wording standardized.
E&O Maximum Valves Per Cylinder #30559engineunclearP1 Spec Lines B, C, D maximum valves per cylinder set to 4, was NA.
Clean up Spec Line A notes section #30424wordingneutralP1 Spec Line A clarifies carburetor induction only, one per cylinder, balance tubes not allowed.
Clean up Spec Line H notes section #30425wordingneutralP1 Spec Line H notes clarify peripheral port or bridgeport allowed.
E&O restrictor terminology #30285wordingneutralP1 engine table updates terminology from inlet to intake restrictor across multiple spec lines.
Runoffs 2020 ROFF202020-10-02
2:01.101James French · fastest of 18 · top 5 within 1.1s
2:01.870James French · fastest of 17 · top 5 within 1.8s
159.7David Locke
18 earlier rule changes on record, in force before Runoffs 2020 (from 2019)2 removed · 1 engine · 1 induction · 14 wording · P1 intake manifolds unrestricted on engines without flat plate restrictor; plenums and balance pipes prohibited on individual runner manifolds with restrictor. · P1 sealed DP02-spec 2.0L Mazda MZR Elan removal date extended from 1/1/2020 to 1/1/2021. · P1 sealed DP02-spec 2.0 MZR engine removed effective 1/1/2020; competitors may use Spec Line G. · P1 Spec Line F Honda K20A-FD2 reclassified from Restricted 2.0L Group to CN-spec with stock intake manifold and 64mm throttle body. · P1 traction control prohibited in GCR section 9.1.8.C.H. · 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. · P1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted. · P1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections. · 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. · P1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes. · 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.showhide
E&O minimum weights and intake manifolds #28731inductionfasterP1 intake manifolds unrestricted on engines without flat plate restrictor; plenums and balance pipes prohibited on individual runner manifolds with restrictor.
Extend date for removing sealed DP02-spec 2.0L option #28046wordingneutralP1 sealed DP02-spec 2.0L Mazda MZR Elan removal date extended from 1/1/2020 to 1/1/2021.
Remove sealed DP02-spec 2.0 MZR spec #26753removedslowerP1 sealed DP02-spec 2.0 MZR engine removed effective 1/1/2020; competitors may use Spec Line G.
Update Revised Spec Line F #27745engineunclearP1 Spec Line F Honda K20A-FD2 reclassified from Restricted 2.0L Group to CN-spec with stock intake manifold and 64mm throttle body.
E&O Transmissions #27098wordingunclearP1 traction control prohibited in GCR section 9.1.8.C.H.
E&O Transmissions #27005wordingneutralP1 allows mechanical and solenoid shifters, prohibits electronic controls and pre-selected changes.
Move minimum height provision to #27031wordingneutralP1 bodywork minimum height provision moved to aerodynamic section; 115cm height limit for aero parts added.
Remove duplicative fender louver provision #27033wordingneutralP1 clarifies fender louver and brake duct rules, consolidating duplicative provisions in GCR 9.1.8.C.
Missing word E&O #26919wordingneutralP1 anti-intrusion panels now allowed anywhere on chassis sides, previously restricted.
E&O correction to GCR 9.1.8.C.C. #26927wordingneutralP1 bodywork wording corrected: 'a passenger' becomes 'passenger' in three GCR sections.
Clean up reference to engine table #26648wordingneutralP1 Engine Table reference cleaned up; no performance change.
Remove redundant spec line #26692removedneutralP1 Mazda Renesis Rotary removed from Engine Table specification line.
Clean Up Engine Table Language #26590wordingneutralP1 Staudacher and Honda K20A-FD2 engine table language cleaned up; no performance changes.
Move single-seat closed cockpit provision to #26376wordingneutralP1 closed cockpit single-seat cars moved from subsection J.5 to subsection B.4; prohibition unchanged.
Correct errors in GCR section 9.1.8.C.J #26144wordingneutralP1 engine table reference corrected from 'above' to 'below'; ECU throttle wording clarified for dual sensors and fail-safes.
Remove redundant inlet restrictor provisions #25877wordingneutralP1 removes redundant TIR inlet restrictor provisions; SIR and flat plate restrictors remain required.
Clarify Honda K20A-FD2 parts requirement #25949wordingneutralP1 Honda K20A-FD2 CN-spec clarifies allowed parts to OEM list only, no machining.
Correct GCR section 9.1.8.C.J errors #25966wordingneutralP1 engine table wording corrected; head designs removed from listed specifications.
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.