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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#1
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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. |
N_Jay |
Oct 28 2016, 01:10 PM
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#2
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Member Group: Members Posts: 283 Joined: 2-March 16 From: Chicago NW Burbs Member No.: 19,720 Region Association: None |
Hey! Hay!
I know all about the famous o-ring failure. (What type of seal would you have suggested? That aside, I was thinking more along the lines of a annealed aluminum or copper ring, not a silicon rubber one. All in all, just engineers daydreams. Still wonder, why the head bolt torque is not adjusted up or down based on the surface area of the cylinder to head seal? Hmmmm? Seems the clamping force in PSI is what you want to control? |
Mueller |
Oct 28 2016, 03:32 PM
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#3
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914 Freak! Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None |
Hey! Hay! I know all about the famous o-ring failure. (What type of seal would you have suggested? That aside, I was thinking more along the lines of a annealed aluminum or copper ring, not a silicon rubber one. All in all, just engineers daydreams. Still wonder, why the head bolt torque is not adjusted up or down based on the surface area of the cylinder to head seal? Hmmmm? Seems the clamping force in PSI is what you want to control? Not enough room for a ring on the top of the cylinder to be reliable.It can and has been done, just not as reliable as the 2 proven methods in this thread. I'm going the method Jake and Len recommend, if I change my mind and decide factory method only, I might as well throw away my 205/50-15 tires for the 4 lug Mahles I want since Porsche never installed that size tire! Heck, I should toss those SSI heat exchangers since surely Porsche wanted carbon steel only (IMG:style_emoticons/default/smile.gif) |
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