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

Hello,

I am replacing my head gasket and have two gaskets to choose from I have a copper and steel gasket with a metal inside core which is from Best vs a copper and steel gasket with the fiber matrix core. Is one better than the other from anyone's experieces?

Also I have heard to be careful machining the head excessively so that the valves don't hit the top of the combustion chamber of the head. Does anyone have a measurement for amount of material to leave as a minimum clearance for the this area? That is if the head needs to be resurfaced some to remove any imperfections.

Also is any copper head gasket sealing spray better than others in preparing the gasket before install?

Thanks

James

JUST ME but i use
johnbridge.com/vbulletin/index.php
get it a t NAPA

Cant remember how i got using it. Works for me.

Have used Copper Coat and it does the job but ive always had trouble with it bleeding. Maybe i used to much.

Hi

Thanks for the response, but your link goes to a tile website, go you have another link or name of product

Thanks

James

I don't have experience with the fiber type, but I've always been a fan of the all metal gaskets.

As far as install, I use the permatex copper spray. Heavy coat on each side, then torque the head down. I've had a little bit leak out each time, but it wipes up easily.

Agree to use a copper or alum clad gasket. Saw one of those Composite HG burn thru 2 cyl.