Paul,

re pick up tube to go with the wedge tank.   Originally I was
going to silver solder hard copper plumbing fittings to make this.
My logic was that silver solder is very strong and has a melting temp
of over 1000 º.  However, I learned yesterday that silver solder has
a service life that is quite short when temperatures are sustained
above 300º.  The words service life and pick up tube should not
appear together.  It has to last forever.   So I am back to steel or
stainless steel.  Can someone put  a magnet on the stock tube and let
me know if it is SS?  Is there any reason to defend against oxidation
at all  given the location inside the pan.  I am not looking forward
to building the bolt flange out of SS but what ever Mazda did will be
the standard.

Jerry


Jerry,

   Some stainless steels are magnetic - some are not.

   The "magnet test" is inconclusive...

Jack Beale



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