<VV> Valve stem seals

[levair at aol.com]

I agree with Craig,.
 
Also every engine that I've  disassembeled which had a high lift cam and had seen high rpms had the valve stem seals crushed.  So they were a waste of time on these engines.
Warren
 
 
-----Original Message-----
From: NicolCS at aol.com
To: virtualvairs at corvair.org
Sent: Tue, 16 Jan 2007 10:59 AM
Subject: <VV> Valve stem seals


The last digest had a couple of posts regarding valve stem seals; Yes or  No, 
 IMHO, the combination of the very effective teflon seals (originals  were 
neoprene) and the low oil flow provided by replacement lifters can starve  the 
intake valve guides.    The Techlines article was the result  of a question 
regarding a recently rebuilt 140 head that had two guide  seizures.  It had 
teflon intake seals and about 5000 miles use after having  been rebuilt with 
guide 
liners by a very reputable Corvair repair shop. 
 
On a motor with original Corvair lifters and/or worn guides, I'd use intake  
seals. On a motor with tight guides and replacement lifters, I'd go without a  
seal.
Craig Nicol (YMMV)
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