by Bill C. -
Your bugís oil pump requires 2 gaskets; an inner and an outer.
- The INNER gasket mounts between the case and the pump. You usually
slide it over the pump barrel before installing the pump. This paper
gasket is much thicker than the OUTER gasket.
- The OUTER gasket is very thin paper and mounts between the pump body
and the pump cover.
So whatís the big deal?
- Pump pressure is dependent on very tight tolerance (fit) between the
ends of the pump gears and the cover. Too much clearance and the oil will
escape around the ends of the gears; rather than being squeezed through
them and into the engine.
- Replacing the OUTER gasket with a thick, inner gasket opens up a gap
between the gears and cover; causing severely reduced oil pressure!