head gaskets
Lead Driver
Joined: Jan 2019
Posts: 5,081
Likes: 865
From: N.W. Alabama
What heads, & what done to block.
Going Boarding said-->"Is the piston down in the hole, even with the block deck, or protruding? If it's a never been touched bottom end, probably in the hole a touch or even with block. I would measure, then subtract that value from 0.040" and pick a gasket that is that thick. If it's at zero deck height, that is, pistons even with block deck, use a 0.039" or 0.040" compressed gasket. That's stock from everything I've seen.
You're setting your squish right now, this will dictate resistance to ring & piston destroying detonation. Too loose and you lose the quench effect, which can equate to even a low compression engine being detonation prone. Some would say to go tighter, maybe even as low as 0.030"
Going Boarding said-->"Is the piston down in the hole, even with the block deck, or protruding? If it's a never been touched bottom end, probably in the hole a touch or even with block. I would measure, then subtract that value from 0.040" and pick a gasket that is that thick. If it's at zero deck height, that is, pistons even with block deck, use a 0.039" or 0.040" compressed gasket. That's stock from everything I've seen.
You're setting your squish right now, this will dictate resistance to ring & piston destroying detonation. Too loose and you lose the quench effect, which can equate to even a low compression engine being detonation prone. Some would say to go tighter, maybe even as low as 0.030"
Cargo Master
Joined: Oct 2020
Posts: 2,686
Likes: 789
Quench is extremely over rated and a few thousandths one way or the other isn't going to make any difference. You're not going to change that enough to worry about in a stock engine using a stock replacement gasket.
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FTE Legend
Joined: Oct 2005
Posts: 283,848
Likes: 8,335
From: northwestern Ontario
It's a stock block and un-assembled at this time, cylinders bores style has the factory cross hatching so replacing with standard sized rings. Using a crank from another motor because the original had scored journals, just want to order up all the parts but was getting confused by different compressed thicknesses..thanks for the replies..
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FTE Legend
Joined: Oct 2005
Posts: 283,848
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From: northwestern Ontario
If I include these in my order then I should be fine..?
https://www.summitracing.com/int/par...illocation=int
https://www.summitracing.com/int/par...illocation=int
Mountain Pass
Joined: Feb 2017
Posts: 183
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From: Kentucky
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FTE Legend
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