HomeRace ScheduleChampionshipHistoryInside F4Gallery4 Sale
 



 

 



 

 

Inside Formula Four

Click here to see our current featured car
 
 

 
RACING REGULATIONS FOR F4 CARS

1) The car must satisfy all general requirements that are listed in the current applicable C.A.S.C. Race Regulations year book, with the following exceptions:
a) An emergency brake is not required
b) Fuel is allowed as stated under engine requirements
c) A self-starter is not required

2a) The combined weight of the car and driver including all required driving apparel (this includes all coolants, lubricants, and fuel remaining) must not be less than 370 kg (or approximately 825 lbs.). (Rule came into effect at the beginning of the 2001 race season).
2b) Rule #2a shall not apply to cars with motors described in Rule #3c.

3) The engine must be based on a production engine (i.e. more than 1000 of the model manufactured) and must conform to the following rules:
a) Must not exceed the first manufacturers over-bore to give a greater displacement than 750cc maximum.
b) Have a maximum displacement of 750 cc and be of either a two stroke cycle or four stroke cycle. All engines must be normally aspirated. Two strokes may use any commercially available gasoline. Four strokes may use 100% alcohol or a alcohol/gasoline blend. Nitrated fuels may not be used.
c) 4 cylinder four strokes with 2 valves per cylinder and 2 stroke Suzuki GT 750's 1972- 1978 may have a maximum displacement of 850cc.

4) The car must be a single seat, four open-wheeled racing car with safety equipment conforming to the current General Racing Regulations as published by the CASC. The following restrictions apply: COACHWORK - All external parts of the car which are in the airstream and situated above a plane passing through the centre of the wheel hubs, with the exception of units definitely associated with the function of the engine, or the transmission, or the safety roll bar.
a) No part of the coachwork, with the exception of the safety roll bar, shall exceed in height a horizontal plane of 900 mm (35.43 inches) from roadway with driver normally seated. The roll cage shall not exert aerodynamic influence on the car.
b) Behind the front wheels, no part of the coachwork may extend beyond a vertical plane passing through the centre line of the wheels on either side of the car.
c) The coachwork ahead of the front wheels may extend to the outer sides of the front tires.
d) Any coachwork which is in front of the front wheels and extends the inner faces of the front tires, must not extend above the height of the front wheel rims.
e) Any specific part of the car which has an aerodynamic influence on the stability of the vehicle must be mounted on the entirely sprung part of the car and shall be firmly and immovable fixed while the car is in motion.

5) All two-stroke engines must be equipped with a muffling device on each exhaust pipe.

Revised November, 2007

 

       

 TQLA  |  Contact Us  |  Send Feedback  
 Copyright 2007-08 the Three Quarter Litre Association.  Use of this website signifies your acknowledgement that real race cars don't have fenders.