How the "Evo" Oiling System
Works
Green is Low Pressure Feed
Red is High pressure Feed
Pressurized oil is forced thru
tappet oil screen to oil pressure switch,
and thru crankcase passages to
the tappet guide where it fills the
hydraulic lifters. Oil is then
forced up thru the pushrods to the rocker arms,
shafts, etc. The pressure
created in the top end oil system causes the
pressure relief valve to open.
Oil then travels thru the crankcase passages
into the cam cover to the
pinion shaft, where it oils the lower rod bearings.
