Tube within a tube is a good idea and very easy to accomplish.   The
outer tube can be expanded to slip over the stub and heavily tacked
to the flange.  Remember to smooth and blend the weld bead that is on
the inside of the flange.   I think I will do that portion of my
exhaust system over now that I have a clear view of this.     Jerry

Tailwind & Rotary Engine Support

http://www.j-winddesigns.com

mailto:j-winddesigns@thegrid.net

George Lendich wrote:

Jerry,
With welds it's best to keep them all there, a lot of strength is lost by
grinding back.
There is plenty of strength in a flange, take (Turn) a bit of this out
leaving room for a solid weld.
Just a suggestion!
George (down under)

BTW Vance, According to McMaster Carr steel springs are good to 250 F and
302 SS are good to only 550 F.

Paul Lamar
 
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