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Standard Piston to Valve Clearances?

Old 06-14-2010, 10:53 AM
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Default Standard Piston to Valve Clearances?

Just curious if theres a common gap measurement to follow

Looked on the stickies but didn't see it.

I am not techie, just want some more general knowledge - trying to learn as I go.

Was reading some posts which brought up clearances at certain degrees or something but i'm too big of a noob.

Thanks!
Old 06-14-2010, 12:56 PM
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Or is it just a matter of, if it clears it clears..?
Old 06-14-2010, 01:06 PM
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Most people like to keep .080" clearance on intake and .100" on exhaust
Old 06-14-2010, 01:18 PM
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Originally Posted by printmanjackson
Most people like to keep .080" clearance on intake and .100" on exhaust
Yup and depending on the lift/duration of the cam, this usually happens between 15 deg BTDC and 15 deg ATDC for the intake. The exhaust is usually 15 deg BTDC to TDC if I am not mistaken.
Old 06-15-2010, 12:55 PM
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Thank you guys! and will different thickness gaskets help in the cause much as well?
Old 06-15-2010, 01:11 PM
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Originally Posted by sujomatt
Thank you guys! and will different thickness gaskets help in the cause much as well?
yes it will
Old 06-15-2010, 01:47 PM
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Are the GM Multi Layer Steel gaskets (I believe 28-12498544) .050?
Old 06-15-2010, 02:10 PM
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Originally Posted by sujomatt
Are the GM Multi Layer Steel gaskets (I believe 28-12498544) .050?

.051 compressed.... I did not check your part #...
Old 06-15-2010, 02:17 PM
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Yea I have the gaskets already from my turbo build. guess ill see how this stupid big cam works for clearance with those gaskets.. hopefully ill still have decent compression if it does in fact work lol
Old 06-15-2010, 02:33 PM
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are you still running boost?
Old 06-15-2010, 02:57 PM
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Nah, just H/C/I setup with some nitrous.. (Sorry could have phrased my previous post better lol)

Patriot Stage II 5.3 63cc heads with 2.02", 1.57" valves
TRex v2 Cam
FAST 78mm intake manifold
Pacesetter Headers/ORY/Magnaflow Catback
Other misc stuff

Just don't feel like flycutting - a lot of time already wasted and removing this from the list of things to do would be nice.


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