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Old 09-26-2021, 08:56 AM   #1
Randy Lausch
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Default Valves

Some of my exhaust valves are running .012 do you think that is close enough or shouldI have the valve stems ground down. If I need to what kind of grinder can I buy to do that

Last edited by Randy Lausch; 09-27-2021 at 12:18 PM.
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Old 09-26-2021, 09:10 AM   #2
Patrick L.
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Default Re: Valves

.010" on intakes isn't too bad, could stand to be a bit looser though.

.20" on the exhaust is crazy loose ! Grinding the stems won't help. There is something drastically wrong like bad camshaft, bad lifters. Unless .20" is just a misprint.

Grinding the stem loosens things more.



I'm assuming the lifters are original style.

Last edited by Patrick L.; 09-26-2021 at 10:13 AM.
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Old 09-26-2021, 11:07 AM   #3
Jim Brierley
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Default Re: Valves

.010" on the intakes is a bit tight but won't cause any damage because they run cooler than exhausts.
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Old 09-26-2021, 01:06 PM   #4
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My engine rebuilder (Gordon Fischer) suggested for show car i: .011 e: .013
For Driver: i: .010 e: .015
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