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Please note that only the exceptions from the rules according to MSA are noted.

If not mentioned the MSA rules will be applicable.

In interpreting regulations and specifications “what is not specifically permitted is disallowed”. You may only do something if the rules say you may.

Visiting drivers – race within CHD rules for points & trophy if the car adhere to the club rules.

CHD club drivers will be re-scored after the event to exclude the visiting drivers from the club points. E.g. Visiting driver won race 1 and CHD driver was 2nd. With the re-scoring the CHD driver that came 2nd will be re-scored to 1st.


1. Only standard body frames will be allowed (CR1.3.1)

2. The roof must be standard as well as the rear fenders (no sunroofs bodies are allowed) sunroofs may be closed

3. The front fenders, doors, bonnet and boot can be fibre glass. A fibre glass skin may be placed on the original door.

4. All cars are allowed a 2 inch spat, front and rear.

5. All cars are allowed a maximum 10mm spacer per wheel.



1. The engines must adhere to 4 cylinder cars – max 90Kw on flywheel, 180Nm Torque and min weight of 850kg (driver included).

2. If impounded the dyno will be done with the timing is set for maximum power.

3. The engine and radiator must remain on the original mounting points – you may however upgrade the radiator for better cooling

4. No side drafts allowed

5. Only standard air filter housings and air filters may be used or no air filter.

6. Standard intake allowed and be modified to fit a carburetor up to 38 Weber downdraft.

7. Exhaust must exit at the back of the car

8. Only pump fuel

9. A 1600 16 valve Toyota engine can be used.

10. Conquest or Carolla – 4AGE engines

11. It must be used with original, standard fuel injection

12. A 1500 Honda 16 valve can be used with original carburator

13. All other cars must be carburetor models.

14. 100% Full throttle operation.



1. Standard clutch assembly & gearbox are to be used

2. Vehicle and engine must be a unit

3. Gearbox must be original bolted to engine with no adaptor between engine & gearbox of Bell Housing & gearbox.

4. Ratios can be changed – Fabricate with fabricate.

5. No limited slip diffs are allowed

6. Lock and normal diffs are allowed




1. Only local street tyres available to the public at all times over the counter may be used. No road going semi slicks or recapped tyres are allowed

2. Width of tyres allowed is up to a maximum of 195mm x 15 inch (cost saving). Price cap R600

3. Maximum of 6 new tyres may be used per season

4. All cars must be on the same tyre by next season. (Dunlop 7000 star)



Refer CR4. The width of the rim may not exceed the tread width of the tyre utilized with that rim. (Size = 10” to 15”)


1. Standard – no rose-joints are allowed

2. No alterations to wishbones or shock mountings

3. Local shocks that is standard for specific car

4. No import, adjustable or shocks from another vehicle

5. Only original mounting points may be used – no slotting of holes

6. Car can be lowered by cutting the coil springs or spacing leaf springs

7. Front wheel drives can add a bottom chassis brace. It must be non-adjustable and solid

8. Rear wheel drives may add strud-brace.



1. All cars need to adhear to safety regulations. If not, car will not be allowed to race. No exceptions.

2. Sump, gearbox and diff plug are to be wired and all vehicles will have a drip tray fitted underneath the engine.



Maximum 105 dBA


1. Racing format: The class will race clockwise

2. This is a non-contact class



At least 6 cars are required at event to qualify for club championship points, however should not more than 40% of the events in the season have less than 6 cars entered, those events will still count as long as there is an average entry of at least 6 cars throughout the season.

In the event that this does not occur, the event with the fewest entries will be removed from the seasons scoring, and the average entries recalculated to try and obtain the average of more than 6 entries for season.

Should there still be an average of less than six cars for the season the class will not qualify for club championships status.


The committee or the technical rep are responsible for pulling of cars for checking – no driver can protest against another driver’s car.

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