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  What is your ideal bearing clearance?

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Author Topic:   What is your ideal bearing clearance?
SundanceKid
Gearhead

Posts: 1273
From: UT
Registered: Feb 2001

posted 08-08-2003 02:47 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
What main and rod clearances do you prefer?
Opinions?

Thanks

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steve'66
Gearhead

Posts: 9476
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-08-2003 09:45 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
I'd run on the large side of the factory specs for a race engine.

SteveW

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SundanceKid
Gearhead

Posts: 1273
From: UT
Registered: Feb 2001

posted 08-09-2003 04:15 AM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
Steve, do you prefer to use higher clearances and a high volume oil pump? Or just a regular oil pump?

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ted
Journeyman

Posts: 75
From: Central Texas
Registered: May 2003

posted 08-09-2003 07:47 AM     Click Here to See the Profile for ted   Click Here to Email ted     Edit/Delete Message   Reply w/Quote
Although engine block oiling design, intended end use for the engine, oil pump, and oil viscosity all play a part in determining the ideal bearing clearances, a rule of thumb for a performance engine is 0.001" of bearing clearance for each 1.000" of crankshaft journal diameter.

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Ted E.
Fe's are plenty fast, but "Y"'s are fun when they run in the nines.

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