LR3/Disco 3
Cylinder Heads
The cylinder heads are unique to each cylinder bank. Deep-seated bolts, to reduce distortion, secure the cylinder heads
to the cylinder block. Two hollow dowels align each cylinder head with the cylinder block.
The 14 mm spark plugs, one per cylinder, locate in recesses down the centre line of each cylinder head.
The engine-lifting eyes are bolted to the cylinder heads; two on the rear (one per head) and one at the front.
Camshaft Covers
The camshaft covers are manufactured from thermo-plastic. The A bank camshaft cover incorporates an outlet for the
part load engine breather. The bank B camshaft cover incorporates an outlet for the full load engine breather and the
engine oil filler cap. Identical oil separators are incorporated below the breather outlet in each cover. For additional
information, refer to
Electronic Engine Controls
(303-14B Electronic Engine Controls - 4.4L)
Silicon rubber in-groove gaskets seal the joints between the camshaft covers and the cylinder heads. Together with
spacers and seals on the camshaft cover fasteners, they also isolate the covers from direct contact with the cylinder
heads, to reduce noise.
Cylinder Head Gasket
The multi-layered steel cylinder head gasket has cylinder specific water flow cross-sections for uniform coolant flow.
Camshafts
