 Are head and cylinder gaskets compression gaskets? |
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| MartyYeoman |
 Aug 22 2017, 04:09 PM
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#101
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Senior Member  Group: Members Posts: 1,536 Joined: 19-June 03 From: San Ramon, CA Member No.: 839 Region Association: Northern California 
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I just read thru this thread. Very illuminating. Here is my situation and probable solution. I thought I'd throw this out there for others to comment on. I'm putting together a 2056 build. I have a set of 2.0 liter heads that have been resurfaced at the cylinder sealing plane. The problem is that the plane is now too deep in the head to provide clearance for the cylinder spud. In other words the sealing surfaces don't contact. I could fill the gap (>1mm) by using a head gasket but would rather not. I prefer to flycut the heads to remove what I consider excess material and go with no gasket at the head. I would still use the shims below the cylinder to control deck height and compression ratio. Currently, I calculate the no gasket senerio at about 9:1. This motor is going into my daily driver and is going to run L-Jet using a WebCam-73.
Thanks for commenting. Attached image(s)  
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| worn |
Aug 22 2017, 06:06 PM
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#102
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Winner of the Utah Twisted Joint Award Group: Members Posts: 3,488 Joined: 3-June 11 From: Madison, WI Member No.: 13,152 Region Association: Upper MidWest
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Happened to me when I resurfaced the sealing circle, for lack of a better term. The cooling fing portion of the cylinders, spud as you say, was then too close. So I got out the fly cutter and trimmed the faces of the heads. Well described in the Wilson book.
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| boxsterfan |
Aug 22 2017, 06:10 PM
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#103
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914's are kewl Group: Members Posts: 1,776 Joined: 6-June 03 From: San Ramon, CA Member No.: 791 Region Association: Northern California |
I think we should have a "Gaskets vs No-Gaskets" softball game to settle this debate once and for all.
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