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Grandad
Grandad
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Joined: Mar 2013
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I started this thread so that I don't cause the chrome paint thread to go too far off topic.

Most of our engines are cast iron barrels and aluminium heads. The difference in the coefficient of expansion between the two metals will cause the mating surfaces to slide over each other as the engine goes through heat cycles. I fail to see how silver paint, when it is dry will seal this surface. I use a smidge (say 1 thou thick each side) of silicon sealer only around the oil channels on my copper gaskets and have not had oil or combustion gas leaks.

Rob C

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I think the object of the head gasket sealer is to correct surface imperfections rather than
adhere the gasket to either surface. As you say, alley and iron are considerably different
in terms of thermal expansion.

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MAny of he chrome paints never fully cure
And a lot of the wheel silvers are the same
They just form a skin on the outside
Real silver frost is one such goop
We painted all of the furnace superstructures and the steel walls with it becaue as it never dried fully it would expand & contract with the furnace cycles .
The military used it by the bucket full
Nearly all of the WD B40's sold in the 82 & 84 austions were smothered which it which rubs off on your boots when riding.


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Trevor

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