<VV> Valve stem seals

[NicolCS at aol.com]

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)