A crank scraper is a thin piece of metal that runs the length of the
sump. One edge is mounted to the block, and the other side is cut to
match the profile of the crank shaft. It almost looks like a house key.
As the various rotating parts of the crank pass through the plane of
the scraper, any excess oil is ripped off the crank. This cuts down on
drag, reciprocating mass, and keeps the oil in the pan. "scraper" is a
bit of a misnomer, since it and the crank never actualy touch, there is
just enough margin for it to pass through but not bring much oil with it.
Hope this helps.
James J.
David Kernberger wrote:
7/9/03
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Daryl,
Please pardon my ignorance but what in heaven's name is a crank
scraper????? I'm trying to pkcture such a device and am failing miserably.
Thanks in advance.
Regards,
David Kernberger
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