the present invention is a lubrication system for an internal combustion engine . lubricating oil flows through a central bore of a camshaft , and the camshaft sprays oil into a journal bearing . the crankshaft and camshaft are configured so that they are in phase , whenever the camshaft is closest to the camshaft during a rotation , the camshaft sprays oil into the journal bearing . since the crankshaft has twice the rotational velocity of the camshaft , two spray holes are provided in the camshaft so that a spray hole supplies oil on each cycle of the crankshaft rotation .