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05-25-2015, 12:50 PM | #1 |
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Piston to valve
What is the minnium piston to valve clerance you have run, aplication is stocker with auto trans and solid lifter.
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05-25-2015, 01:03 PM | #2 |
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Re: Piston to valve
On the intake, I run as little as the piston to head clearance plus 0.010", on the exhaust, I like to see 0.070".
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Alan Roehrich 212A G/S |
05-25-2015, 05:16 PM | #3 |
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Re: Piston to valve
You are my hero Alan ! ...I thought I was brave at .025 !
I do go closer @ .060 on the exhaust though.
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Tom Goldman 1500 SG , 1506 STK |
05-25-2015, 05:25 PM | #4 |
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Re: Piston to valve
Tom, I've run 0.050" total on a big block intake, at 0.00" deck with a 0.042" Cometic head gasket. I've run tighter than 0.070" on the exhaust, but I know that I have kissed the piston with a valve or two when the exhaust valve bounced on the seat. I know valve bounce can happen, so I won't tell anyone to run tighter than 0.070" on the exhaust. Valve bounce on the intake will not cause a clearance problem, just beats on the valve job and makes Jimmy Bridges chew me out.
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Alan Roehrich 212A G/S |
05-26-2015, 08:07 AM | #5 |
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Re: Piston to valve
The driver is also a big factor in how close you can get by with.
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