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Author Topic: Valve seat angles.  (Read 3430 times)

DSharp

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Valve seat angles.
« on: November 01, 2016, 06:17:17 PM »
what up?  Doing a valve job.  I have already decided that I want the sealing angle to be 45 for durability.  I'm thinking 70°, 60°, 45°, 30° on intake seat with a 30° backcut on the valve. For the exhaust I was thinking of the same geometry with a 15° top cut on the seat.  Whatchyagot?
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No escape from the mass mind rape

turbohf

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Re: Valve seat angles.
« Reply #1 on: November 01, 2016, 09:18:33 PM »
i drop the head on the counter, and say: ill take a 3 angle, a surface and clean. call me when its done. thanks.


but most the time i just lap'em and call it win.   :Jew:
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Dustin  :Jew:
1987 Buick Regal Limited 6.0L/4L80E (LQ4, 862 heads, tbss intake, 92mm tb, e1841p cam, Holley EFI)
2000 Silverado LS 5.3L Reg Cab Short Bed
1966 Chevy II Nova 400 4dr Sedan V8


'Faster, Faster, until the thrill of speed overcomes the fear of death.'

Random Hero

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Re: Valve seat angles.
« Reply #2 on: November 09, 2016, 04:23:34 PM »
50* on turbo builds. lasts way longer.
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