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:

Cylinder head - removal and refitting (engine removed)
Note: Up to early 1984, splined type cylinder head bolts were used, and from early 1984, size T55 Torx bolts were used. Torx type bolts must always be renewed after slackening. The two types of bo ...

Air cleaner air temperature control - description and testing
Thermostatically-controlled air cleaner 1 On all pre-1986 models and certain models from 1986 onwards, the air cleaner is thermostatically-controlled by a vacuum operated system to provide air at ...

Fuel injectors - removal and refitting
Note: Refer to the precautions at the end of Section 1 before proceeding. New injector seals will be required on refitting. Removal 1 Disconnect the battery negative lead. 2 Depressurise the fuel ...