3 TECHNICAL REGULATIONS
3.1 ELIGIBLE CARS
There will be 25 classes. Classes 3A – 5E & 6 as defined by 2018 MSA Yearbook. Classes SA – 2D are defined below.
In the event of a dispute concerning the compliance of a vehicle to the regulations for the event the onus will be on the competitor to prove the compliance to the organisers.
At some events Eligibility Scrutineers will be employed who will check the eligibility of cars within these regulations. No warning will necessarily be given to competitors.
Cars in Classes SA to SC must use 2018 MSA List 1A tyres, all other road-going production classes must use tyres from List 1A or 1B in the 2018 MSA Yearbook, all tyres must comply with (L2.3).
The forced induction equivalence for classes SA, SB & SC is 1.7 (S18.104.22.168).
The forced induction equivalence for all other classes is as specified in S10.3.1 & S10.3.2.
CLASS S – ROAD GOING STANDARD SERIES PRODUCTION CARS CONFORMING TO S11.9
SA – Standard Sports & Saloon Cars up to 1400cc
SB – Standard Sports & Saloon over 1400cc up to 2000cc
SC – Standard Sports & Saloon over 2000cc
CLASS 1 – ROAD GOING SERIES PRODUCTION CARS (S11.1 to S11.8)
1A – Sports & Saloon up to 1400cc
1B – Sports & Saloon Over 1400cc up to 2000cc
1C – Sports & Saloon Over 2000cc
1D – Four-Wheel Drive Cars any capacity
CLASS 2 – ROAD-GOING SPECIALIST PRODUCTION CARS (S11.1 to S11.8)
2A – Road-Going Kit, Replica & Spaceframed Cars up to 1700cc (Car Derived Engines)
2B – Road-Going Kit, Replica & Spaceframed Cars Over 1700c (Car Derived Engines)
2C – Road-Going Kit, Replica & Spaceframed Cars (Motorcycle Derived Engines)
2D – All Road-Going Specialist Cars That Are Not Eligible For Classes 2A, 2B or 2C
CLASS 3 – MODIFIED SERIES PRODUCTION CARS (S12)
3A – Up to 1400cc
3B – 1400cc. up to 2000cc
3C – Over 2000cc
CLASS 3 – MODIFIED SPECIALIST PRODUCTION CARS (S12)
3F – Modified Kit, Replica & Spaceframed Cars up to 1700cc (Car Derived Engines)
3G – Modified Kit, Replica & Spaceframed Cars over 1700cc (Car Derived Engines)
3H – Modified Kit, Replica & Spaceframed Cars (Motorcycle Derived Engines)
3K – All Modified Specialist Cars that are not eligible for Classes 3F, 3G or 3H
CLASS 4 – HILLCLIMB SUPERSPORTS CARS (S13)
4A – Front Engined
4B – Rear Engined
CLASS 4 – SPORTS LIBRE CARS (S14)
Class 4 includes Specialist Sallons, Silhouettes, Spaceframed Cars, Group B Sports Cars, GT1 Sports Cars, World Rally Cars, Modified Kit Cars, Replica Cars, Sports Racing Cars and Modified Hillclimb Supersports Cars.
4C – Up to 1700cc
4D – 1701cc & Over
CLASS 5 – RACING CARS (S15)
5A – Up to 1100cc
5B – Formula Ford 1600cc Racing Cars Manufactured Before 1 January 1996
5C – Cars over 1100cc up to 1600cc
5D – Cars over 1600cc up to 2000cc
5E – Cars over 2000cc