Engine Description - Engine Lubrication System
Fig. 13
The engine oil supply is in the bottom of the case, normal with wet
sump lubrication systems and unlike the 911.
Engine lubrication is effected through a forced feed system and
includes an oil cooling provision.
The oil pump is situated in the timing gear cover and is driven by the
camshaft. The oil is picked up from the lowest point in the crankcase
and forced into the oil cooler and the oil galleries. Part of the oil
is forced through the main bearings into the drilled oil galleries in
the crankshaft and lubricates the connecting rod bearings. A second
part of the oil lubricates the camshaft bearings, and still another
part passes through the hollow pushrods to the rocker arm bearings,
also lubricating the valve shafts. Cylinder walls, pistons, and piston
pins are lubricated through oil splash. Oil draining from the points
of lubrication collects in the bottom of the crankcase where it passes
through an oil strainer and a magnetic filtering element, both
entrapping foreign matter that may be suspended in the oil. A bypass
oil filter additionally cleans the circulating oil.
|
