[DeTomaso] Metal Treatment for overflow tank
JDeRyke at aol.com
JDeRyke at aol.com
Thu Jan 6 13:49:32 EST 2011
In a message dated 1/6/11 8:19:36 AM, cengles at cox.net writes:
> I was told that there was an "appearance" coating that was similar to the
> header recipe and could be used on such things as water pipes, tanks,
> pulleys, engine covers, etc, etc.
>
There are two powder-cure temperatures: the 'high heat' one used on
headers, wheels etc is over 350 F, which is where low-temp solders melt. The lower
temp coatings go on around 200 F and are safe with solders. But you may
still get thermal cracking of the coating inside. Hot water doesn't work like
gasoline so most tank sealants are ineffective.
All platings are made of multiple layers of crystals; they are not a
continuous coating so there's always the possibility of water worm-holing its
way down to rustable metal. Both stock tanks after about Sept '72 were
nickel/copper plated by Ford/DeTomaso at the factory, and even then if you do NOT
change antifreeze each year, they can rust. Bottom line: brass, stainless
steel or aluminum tanks will not rust. Until then, change the antifreeze EVERY
12 months. Good luck- J Deryke
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