head gasket squish?

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htchevyii
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head gasket squish?

Post by htchevyii »

Hey guys,
Anyone have an idea how much a head gasket usually compresses when torqued? I noticed that my pistons protrude out of the block .4-.5mm. The new gasket is 1.4-1.5mm on the outer surface, (not the fire ring). I'm not sure how close i'll be on clearance after torquing. I guess if I have to I could sacrifice a gasket in the name of science.
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manoa matt
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Re: head gasket squish?

Post by manoa matt »

Probably only a few thousants, but it depends on the gasket manufacturer. I think Vics offers a "no-retorque' performance gasket for around $38 Bayless sells a performance gasket for $20 that is a bit thicker than others I've seen I think its around 2mm thick. I can get an accurate measurement tonight. Goetz and Fel-pro are good, Tako not so good.

Do a dry build first, torque the head bolts and let it sit overnight to settle then check your clearances by rotating it over by hand. I think I'd be more worried about the piston to valve clearance.
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