L322 Range Rover System Description and Operation
ENGINE - V8
12-2-12 DESCRIPTION AND OPERATION
Cylinder Head Components
The cylinder head components are described in the following paragraphs.
Cylinder Head Cover
The cylinder head cover is manufactured from magnesium alloy and is secured to the cylinder head with 11 threaded
spacers with rubber seals. The right hand cover incorporates an oil filler cap.
The cylinder head cover also provides mounting for the coils. The coils are protected by a plastic cover, sealed with
a rubber gasket. The cover is retained with two bolts which are covered with protective caps.
NOTE: Damage to the magnesium cover may cause corrosion.
Cylinder Heads
The cross flow cylinder heads are made of die-cast aluminium and feature:
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Centrally located spark plugs
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Four valves per cylinder
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Two camshafts
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Bucket tappets with hydraulic valve clearance adjusters.
The combustion chambers are machined into the heads, thus ensuring more uniform “matched” combustion
chambers and compression pressures.
Bolted to the front end of the cylinder head are the oil distribution flanges. The flanges provide a mounting for the VCC
solenoids and the advance-retard ports from the solenoids to the intake camshafts.
