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:

Pressure regulating valve (Saloon and Estate models) - removal and refitting
1 The brake pressure regulating valve is located within the engine compartment, just above the aperture in the wing inner panel through which the steering tie-rod passes. On pre-1986 models the va ...

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, ...

Temperature gauge sender removal and refitting
Removal 1 On SOHC models, the temperature gauge sender is located on the front left-hand side of the cylinder head, just in front of the inlet manifold. On CVH models, the sender is located on th ...