Engine Lubrication System

DESCRIPTION





Fig. 6

The lubrication system is a full-flow filtration, pressure feed type. The oil pump is mounted in the front engine cover and driven by the crankshaft (Fig. 6).

OPERATION





Fig. 7

Refer to image for lubrication system flow. Engine oil is drawn up through the pickup tube and is pressurized by the oil pump and routed through the full flow filter to the main oil gallery running the length of the cylinder block. A diagonal hole in each bulkhead feeds oil to each main bearing. Drilled passages within the crankshaft route oil from the main bearing journals to the connecting rod journals. A vertical hole at the number five bulkhead routes pressurized oil through a restrictor up into the cylinder head. The restrictor that is integral to the cylinder head gasket, provides increased oil flow to the main gallery. The rocker shafts route oil to the rocker arms/ hydraulic lash adjusters. Oil returning to the oil pan from the pressurized components supplies lubrication to the valve stems. The cylinder bores and wrist pins are splash lubricated from directed slots on the connecting rod thrust collar (Fig. 7).