I have successfully used 'JB Weld' for this
application for years with
success.
In my Dodge Cummins repair manual, it even lists JB
Weld as an application for use in field operations in
third world countries
where parts are scarce
. . .

I once had an
honest-church-going-really-knows-his-VW's-mechanic who
really believed in that goo also.  In fact, he used it
to repair the head on an upright bus engine.  It
lasted about 5,000 miles before grenading the engine.
I know look for such signs of expedient measures when
determining whether I would use a mechanic.

But it may work just fine for exhausts.....

Ray
FreeLove

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