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-   -   Which Valve Stem seal is best? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/464693-valve-stem-seal-best.html)

Cupcar 03-23-2009 10:57 AM
Which Valve Stem seal is best?
 
Of those shown below which is your favorite valve stem seal?

http://i541.photobucket.com/albums/g..._0795Small.jpg

cgarr 03-23-2009 11:02 AM
The Viton seal on the left

Cupcar 03-23-2009 11:50 AM
For both street and race engines?

Do you like to run on all 12 valves or just intakes?

B D 03-23-2009 12:17 PM
The Votes are in:

Teflon: Walt (Competition Engineering), Henry (Supertec), EBS, Ollie's

Viton: Steve W (Rennsport), Bob? (Anchor Atlantic)

So Teflon defeats Viton 4 to 2! This is from my own research (aka search button)...

john walker's workshop 03-24-2009 01:10 PM
IMO, the viton is too good at keeping the oil out, which can result in prematurely worn guides and valve stems, and the resulting seat wear from the valve wobbling around. some folks remove the spring.

vreference 04-15-2009 10:28 PM
I have a full set of Teflons still in bag from pelican I'd like to get rid of; if someone wants them I can drop them in the mail for $15 or $20 or something.


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