> Of course the pump is positive displacement, when it is pumping oil. If
> it is just sucking air (as in a particular hard left-hand corner),
My point is, regardless of what is on the inlet side of the pump, you can't
force oil backwards through it (except to the extent it leaks all the time).
It acts like a check valve, even if it is not turning.
I am assuming that the main purpose of the Accusump is to avoid loss of oil
pressure in hard turns. Pre-lubing is a nicety, but these engines normally
last many thousands of starts with no pre-lube, so it doesn't seem like a
requirement to me. Does anyone really believe that it extends the life of
their race motor?
-- Randall
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