Engine Oiling System

A gear type oil pump is used. Pump shaft is driven by distributor shaft. The pump is attached to the bottom of the crankcase. A safety valve in the oil pump prevents oil pressure from becoming extremely excessive.

A pressure relief valve (screwed into the crankcase) is connected directly into the main oil gallery. When oil pressure reaches predetermined maximum value, valve opens to allow oil to return to crankcase.

Oil pump pressure feeds oil through drilled passages within the block to lubricate all internal engine parts. Upper valve train components are lubricated by drainage method.