Posted by Gordon Maney [208.126.138.206] on Sunday, April 03, 2011 at 10:30:06 :
In Reply to: Re: M37 engine update posted by Vaughn [99.120.38.236] on Saturday, April 02, 2011 at 23:09:15 :
You are suggesting he coat the *entire* head gasket with pipe dope?
The head and block should be checked for flatness, as well as a close examination of all surfaces for damage or pitting in isolated spots or areas.
If you look at the specifications for cylinder taper in the old manuals you will find a high figure that no one would use today.
If the surfaces are truly flat, and without injury, a new, good gasket will seal with no assistance [added sealers], assuming it is torqued properly.
Over the years I have had people say, "yeah but.... let's use something?" When pressed, and as long as the particular gasket has no stated restrictions, I have used the Permatex copper spray sealer on head gaskets.
Assembling with good surfaces, new gasket, and proper assembly procedures, I have never had a head gasket leak.
Evaluate the block deck surface, too.
Carefully.
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