Air Intake System

ENGINE - V8

12-2-14 DESCRIPTION AND OPERATION

Ancillary Components and Belt Drive
The ancillary components, the torsional vibration damper, alternator, A/C compressor, steering pump and water 
pump, are driven by the engine crankshaft by the aid of the ancillary drive belts. The A/C compressor is driven by a 
separate belt.

The belts, which are maintenance free poly-vee type belts, are automatically pre-loaded by two tensioning spring pots 
and are routed over deflection pulleys in order to maintain sufficient adhesion about the ancillary pulleys. This ensures 
slip-free drive of the ancillary components.

Belt Drive

1 Coolant pump
2 Idler pulley
3 Alternator
4 Power assisted steering pump

5 Tensioner pulley
6 Crankshaft pulley
7 Tensioner pulley
8 A/C compressor

Air Intake System
The inlet manifold is a light weight, one piece plastic moulding. Fuel is supplied by a single fuel rail and regulated by 
a single pressure regulator mounted on the end of the rail. The manifold is acoustically decoupled from the cylinder 
heads to reduce noise and vibrations.

The throttle plate has two wedges screwed directly to it, these provide a curved zone for smoother throttle response 
during idle, off-idle transition.

The combined output of the mixing plate ensures that the gasses and vapours are evenly distributed among all the 
cylinders, which can improve idle quality.

M12 7815A

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