Are head and cylinder gaskets compression gaskets? |
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Are head and cylinder gaskets compression gaskets? |
stevegm |
Oct 22 2016, 01:04 PM
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#81
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Advanced Member Group: Members Posts: 2,111 Joined: 14-July 14 From: North Carolina Member No.: 17,633 Region Association: South East States |
I need to remove the heads off of a newly rebuilt engine (4-cylinder) I built (never run). They have already been torqued. Are the head gaskets and gasket between the cylinder and block, compression gaskets that should be thrown away (i.e., replaced with new one) after I untorque the heads?
The head gaskets will be easy to replace. But I'd have to pull the cylinders to replace the ones between them and the block. |
Mark Henry |
Oct 28 2016, 12:03 PM
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#82
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Yep if want to use a gasket on a stock engine go for it.
But, if you are using 96mm I'd think hard on the subject. You will be leaving 1mm hanging out in the chamber, not hard to imagine it will deform slightly when torqued, lifting off the head. You are now introducing a sharp edge (hot spot) inside your chamber. I have a hard time with the "the bulletin was meant only for VW busses" argument, VW was having issues with the lower CR bus engine, but that doesn't apply to a higher CR 914 engine? (IMG:style_emoticons/default/confused24.gif) As far as engineers go VW/ Porsche is excellent, but not infallible. I guess pulled and broken head studs, head cracks, oil leaks, IMS, D-chunk, etc. are just figments of our imagination. Food for thought, VW engineers told Porsche engineers that they couldn't stroke out a T4 to 2.0, 4 years later VW started putting 2.0 into busses. I have nothing but respect for the Crusty one, on this this subject we had a agree to disagree arrangement. We talked many times by PM, he spent a fair bit of time explaining a step-by-step timing belt/water pump repair when I did it on my passat. We just never discussed head gaskets. (IMG:style_emoticons/default/biggrin.gif) |
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