RS 2000 ( Cat 3 )
Homologation Form No5566

Engine. 1993cc

Dry sump lubrication system.
Bore 90.82. Stroke 76.95.
A 60thou overbore is allowed without altering class.

The 205 engine block casting is allowed to be used.,

This block is easily identified by a blanking plug facing down towards the sump on the rear r/h side of the engine under the exhaust manifold.

Only “I” section connecting rods are permitted.

The engine may be mounted direct to the chassis rails.

Cylinder Head.

The Holbay/Warrior 16 valve cylinder heads are allowed as is the later 8V fuel injection cylinder head. This is identified by its pear shaped inlet port.

 Ford Pinto engine cylinder heads:   Use of the later fuel injected cylinder head is permitted for carburettor cars subject to the  top of the inlet port at the manifold face not being less than 33mm from the rocker cover gasket face. Material may be added to the cylinder head casting in the area of the injection  “eyebrow” by welding or otherwise to achieve this dimension. Where a cylinder head has been modified such that this criteria is not met, then a metallic spacer plate of at least 3mm thickness with maximum of 38mm dia apertures is to be interposed between the inlet manifold and the cylinder and fixed so as to comply with the 33mm dimension stipulated above. 

Holbay/Warrior Cylinder heads

Valve Sizes;
Inlet. 36mm Head 5/16″ stem and length of 4.500″ (Nominal) This is also wasted.
Exhaust. 32mm Head 5/16″ stem and length of 4.500″ (Nominal) This is also wasted.
Both have single cotter groove.


Standard progressive twin choke or twin 44IDF’s. Twin DCOE, Webers or Delorto carburetors.


Distributor. Motorcraft or Bosch distributor.

Standard or Lumenition. The Lumenition system uses an Optronic Trigger system and is good to 13000RPM! The ignition pack and coil must be mounted on the inner wing.
The later Motorcraft/Bosch Sierra type distributor with the amplifier attached is not permitted.


Four speed 2000E or Rocket gearboxes are permitted.

An Alloy casing for 4 speed gearboxes are permitted.

The ZF S5 18/3 is the only 5 speed gearbox permitted.

Dog engagement gearboxes are not permitted.
Concentric Slave cylinders are not permitted.

Rear Axle.

Standard unit or fully floating Atlas unit. Alternatively the Quaife English axle three quarter floating kit Pt no QAF4Z can be used. Limited slip differential. Full 5 link axle location.
Three piece solid halfshafts.



Standard or vented brake disc with cast iron, AP racing or Girling 4 pot alloy brake calipers.

AP Racing CP2361 (Forestry) or CP2270 (Monte Carlo) front brake calipers.


Drum brakes, either standard or Capri 3lt. (Baby Atlas). Alternatively non vented disc brakes. Single calipers must have mechanical hand brake mechanism built into it. (Not Sierra).
AP racing have reproduced the CP2383 (Solid) rear brake calipers. However two CP2577 calipers, one for foot brake and one for handbrake are acceptable. Ian Rix engineering (01379854387) are marketing a modified CP2577 caliper with a built in mechanical handbrake mechanism to satisfy the MOT/road traffic act. This unit is accepted for use.
Girling alloy brake caliper information is available from John Freeth on 01600713117 or e mail

Master Cylinders.

Single outlet master cylinders may be replaced by a Tandem or Twin cylinder arrangement.

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.


Quick steering rack. 2.5 turns as opposed to 3.5 lock to lock.



McPherson Struts. Adjustable platforms are allowed. These can be small or large diameter spring.
Double width front anti/roll bar mountings with anti/dive kit.

Top Suspension mountings must be rubber bushed. Spherical bearings are allowed.
Rose jointed adjustable track control arms are allowed.
They must however not be able to be adjusted when in situ.
Compression or Tension struts are not permitted


Turret kits (Any height) are allowed. 5 Link rear axle location comprising 4 long links and a panhard rod.
(Watts linkage is not allowed)
The fitting of Coil over springs is allowed, however as in period a leaf spring must also be fitted.
The Ford works team  I am lead yto believe used a plastic look alike spring to satisfy the rules.

Wheels and Tyres

13″ Diameter.
Wheel rim and Tyre sizes as per MSA Blue book.

Switch Gear

Only period indicator stalks are allowed.

Body Shell.

The recessing of the floor pan to accomodate the exhaust system is not permitted.


World cup cross member with engine mountings. Fibre glass bonnet or boot lid.
Perspex rear and side windows are permitted.
Alloy centrally mounted replacement fuel tank.
Battery fitted under the bonnet or in the boot. (Suitably secured and insulated.)
Front and rear steel bumper must be fitted.
Heated Front windscreens are permitted.
Digital display dashes and instruments are not permitted.

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