FIA Homologation paper no 5731.
Permitted modifications supported by documented evidence.
Engine.
Straight 4. Belt Driven SOHC.
Bore. 79.5mm Stroke 80mm.
Ignition/Electrics.
Standard or Luminition.
Carburation/Fuel system.
Twin Dellorto/Weber DCOE’s.
Bosch K Jetronic Fuel injection.
Gearbox.
Standard 4 speed or 5 all synchromesh gearbox.
Clutch.
The fitting of a concentric clutch slave cylinder assembly is not allowed.
Differential.
Plated LSD. 3.7, Ratios.are permitted.
Suspension.
Front.
McPherson Strut. Reinforced lower arms.
Rear.
Torsion beam axle. McPherson Strut. Reinforced lower arms.
Panhard rod.
Brakes.
The fitting of a dual master cylinder or any other type of device providing a simultaneous action on all four wheels and divided action on two wheels is permitted providing the original brake pedal and pivot point are used.
The remote brake bias adjuster must be positioned so that it cannot be adjusted by either the driver or co-driver when normally seated in the car.
Front.
Vented brake discs 239 x 20 or 264.5 x 20 mm, with 2/4 piston brake calipers
Rear:
Standard steel brake drums.
Solid rear brake discs 238 x 8 -10mm with 2 piston brake calliper.
A Hydraulic handbrake is permitted.
Wheels and Tyres
Wheel rim, Tyre size and profile as per MSUK NCR’s.
General.
Fibre glass bonnet. Composite side windows.
Alloy centrally mounted replacement petrol tank.