Packard Forum Index » Pre-War (1899-1942)

Hi,
Replacing the head gasket on a 1930 Super 8 engine. As I’m getting ready to install the new gasket….very nice copper gasket I purchased from Olson’s…I am not sure if I need to use some kind of sealant. I think the answer is no, and this is just a crush-type copper gasket…but wanted to ask to make sure. Sealant, or no sealant? …and the head nut torque is 65 lbs, correct?
Thanks,
Rich

Probably about as many use a sealant as don't use one. Permatex makes a copper metallized head gasket sealant specifically for this purpose and I have routinely used it and recommend it.

Yes, for 7/16-20 threaded head fasteners, 65 ft-lbs is correct. Torque to final in several stages, re-torque after a hour or so of initial running, and again semi-annually until no further tightening is needed.

Thanks so much….
Rich

My understanding is always to torque cold and with dry threads, e.g. no anti-sieze or other lubricant. Is that correct?

Yes Jerome, that's always been my understanding. Clean and dry threads.

I used copper sealant on my 115 and my old Ford 8N. Works fine.

I ended up buying the permatex copper spray…says it is specifically for head and exhaust gaskets. You spray it on both sides of the gasket…let it dry and install the gasket.

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