7/10/03
James & others,
Thanks for the response. A simple enough idea once one gets the
hang of it. It is, however, very hard for me to imagine enough oil
clinging to the rotating crank and rod big ends to be a significant drag or
weight hinderance. Is there really any measurable difference??? I suppose
a different pattern would be required if one is doing any stroking, like
with a Buick 300 crank, or whatever-----. A new word in my mechanical
vocabulary.
Cheers,
Dave Kernberger
------------------------------------------------------
>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
>>\
>>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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