Some stainless is magnetic
On Tue, 19 Dec 2000, G. Simmons wrote:
> >I just had my oil-bath air filter sand blasted to get the crud and old
> paint
> >off. After blasting, the "bowl" of the air cleaner looked like it was made
> >of copper. Anyone know if these things were originally copper......or had
> a
> >copper coating??
> >Tom Caperton
>
>
> Hi Tom, the designs for the round air cleaners most guys find on their
> trucks go way back, at least to the early thirties and perhaps earlier. I
> stripped and repainted two last summer, and they were both galvanized steel.
> I originally thought they were stainless because I couldn't believe that
> galvanization would last that long, but on subsequent consideration, I have
> come to believe that the graying metal finish is quality galvanization.
> Both of mine are magnetic, and I would suggest to you to try a magnet to try
> to rule out solid copper or brass.
>
> Is it possible that the zinc used in galvanization may have been in short
> supply due to the war when your air cleaner was made, and it was copper or
> brass plated instead of being galvanized? I guess it was the other way
> around, because I remember zinc pennies were minted during the war to
> conserve copper. Maybe you have a real old one from a time when they were
> copper plating them instead of galvanizing.
>
> It would be worth calling Bob Adler on this. I suspect it would interest
> him.
>
> Regards,
>
> Grant S.
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
Thanks,
-JLS
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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