Umbrella seal good enough? - Team Camaro Tech
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post #1 of 5 (permalink) Old Apr 26th, 11, 11:39 PM Thread Starter
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Kelly
 
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Location: cary, NC
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Umbrella seal good enough?

Hey guys. I'm rebuilding my 396 and the heads had only umbrella seals on the valves. The valves don't have a second groove for o rings and the stems aren't machined for positive seals. Will just umbrellas on the valves be ok?

Thanks.
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post #2 of 5 (permalink) Old Apr 27th, 11, 09:11 AM
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Mickey
 
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Re: Umbrella seal good enough?

They'll be good enough especially for a stock motor. They have done the job well enough for many motors and thousands upon thousands of miles.
For high performance I personally would go to a positive seal.
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post #3 of 5 (permalink) Old Apr 27th, 11, 10:05 AM
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Tom
 
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Re: Umbrella seal good enough?

Umbrellas work great for Stock or HP motors.

71 Camaro 355 NA
11.1650 @ 119.30
1.5028 60'
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post #4 of 5 (permalink) Old Apr 27th, 11, 10:34 AM Thread Starter
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Kelly
 
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Location: cary, NC
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Re: Umbrella seal good enough?

Thanks guys!
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post #5 of 5 (permalink) Old Apr 28th, 11, 12:42 AM
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darrell
 
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Re: Umbrella seal good enough?

they will be good enough for stock -even better for hp
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