<VV> OVERSIZED CRANKSHAFT BEARINGS

[jvhroberts at aol.com]

 Not sure there's a difference, but in this case, it means boring all the main bearing bores to the correct diameter AND all in line with each other. 

I inadvertently got a set of Clevite 77s ages ago which were 0.020" oversize. Didn't realize it immediately, couldn't figure out why I couldn't get the case to clamp together at first! 

 

John Roberts
 

 

-----Original Message-----
From: Chris & Bill Strickland <lechevrier at earthlink.net>
To: virtualvairs at corvair.org
Sent: Mon, Nov 22, 2010 1:06 pm
Subject: Re: <VV> OVERSIZED CRANKSHAFT BEARINGS




>Ah, but there are oversized crank main bearings! These are for cases that have 

been line bored, so, the oversize is on the OUTSIDE

>



Perhaps not as common in the Corvair, where cases are still plentiful, 

and they are not serial number matched to the chassis, but in some 

marques, some owners find it quite common to "need" to "save" a 

particular case.  Also can make getting, then fitting, the "right" 

bearings a notable challenge.



And, a question -- is it line-bored, or is it align-bored?  Does it make 

a difference?



Bill Strickland

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