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-   -   Valve guide seals (https://classracer.com/classforum/showthread.php?t=72420)

SSGN 03-07-2019 09:37 PM
Valve guide seals
 
I have a set of heads that have been machined for 530 guide and looking for a recommendation on seal material. Seems to be more choices than ever.
Thanks in advance

richie 2 03-10-2019 12:51 PM
Re: Valve guide seals
 
viton rubber intake, white plastic pc style exh...both positive type.

Run to Rund 03-10-2019 01:06 PM
Re: Valve guide seals
 
Howard's 93315 orange seals take up only .11-.12" guide to retainer clearance, fit over .532" guides.

SSGN 03-10-2019 04:24 PM
Re: Valve guide seals
 
Quote:
Originally Posted by Run to Rund (Post 584338)
Howard's 93315 orange seals take up only .11-.12" guide to retainer clearance, fit over .532" guides.
Some of the Howards have been discontinued and looks like they are going to a Viton seal similar to comp and manley.

lorenr 03-10-2019 10:50 PM
Re: Valve guide seals
 
Who uses valve guides seals on exhaust valves and why?

:cool:

FireSale 03-12-2019 10:57 AM
Re: Valve guide seals
 
Cometic and Edelbrock seem to fit 11/32 valve stems best. I tried to put Comp 510 seals on a .500 head to sell and every one broke on 11/32 Ferra stems. My N heads have .530 seats and 11/32 Manley valves. The Cometic seals are metal shells and the Edelbrock are rubber with a steel band. All positive stop.

Mike Pearson 03-12-2019 02:27 PM
Re: Valve guide seals
 
Quote:
Originally Posted by lorenr (Post 584394)
Who uses valve guides seals on exhaust valves and why?

:cool:
I usually don't run valve seals at all


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