Manifolds, exhaust and emission control systems

All models utilise a light alloy inlet manifold which on carburettor models is coolant heated to improve the atomisation of the fuel/air mixture.

The exhaust manifold is of cast iron construction and incorporates a heated air box as part of the air inlet system on carburettor models.

See also:

Throttle cable - adjustment, removal and refitting
The procedure is similar to that described in Part A of this Chapter for carburettor engines. ...

Spark control system components (carburettor models) - removal and refitting
Spark delay and sustain valves 1 Disconnect the vacuum pipes at the valve and withdraw the valve. 2 When refitting a spark delay valve, the valve must be positioned with the black end (marked “CA ...

Cylinder head - dismantling and reassembly
Note: A valve spring compressor will be required during this procedure. New valve stem oil seals should be used on reassembly. 1.8 litre (R2A type) Dismantling 1 With the cylinder head removed, ...