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> Luckie's engine had low compression on #3...., ....but I kept removing parts until......
Series9
post Feb 18 2011, 02:44 PM
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This cracked head gasket:




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Jake Raby
post Feb 18 2011, 11:38 PM
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A gasket thats not installed can't fail... If the gaskets were made of a substantial material, my thoughts concerning their use wouldn't be as negative. Three sections of aluminum formed into a gasket of less than .030 thickness isn't my definition of substantial.

No engine that leaves my facility has a stock bore size, so the gaskets could not be used even if we wanted to use them.

What causes them to fail more than anything is overheating and the over-expansion that occurs with that followed by the rapid contraction of the thermal cycle.. This loosens the heads which reduces the clamping load of the head to the cylinder and the gasket.. Then the combustion leaks past and the gasket fails..

This post has been edited by Jake Raby: Feb 18 2011, 11:43 PM
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