Jerry Hey wrote:

 > >  >   The runners are .065 304 SS.   The muffler is .075  304 S that a

 >  > sheet metal shop sheared for me.  The muffler cost $12.00.
 >  >
 >  > We will see how noisy it is.  I am really hoping that it will be
 >  > sufficiently quiet.  In the even it is not, the  45º down tube can be
 >  > spin teched with drop in baffles.
 >  >
 >  > I set aside September for the exhaust system so it looks like I get
 >  > three weeks off.     Jerry

 1. It looks like the entire weight hangs off the exhaust manifold flanges.
 When the material gets hot, will it have sufficient strength? Or
am I missing
 something.

 2. You are using 304 SS. Others have recommended 321 SS. I don't know enough
 of the differences between the SS's, can someone comment on their relative
 applications and limitations?

 Bill Schertz
 KIS Cruiser #4045

321 SS is better but cost is an issue. One can always trade a bit of weight
for cost. Instead of .049 321 SS go to .065 for 304 SS.

Paul Lamar

304 SS is used by all the header and muffler manufacturers.  Perhaps
321 is better but it is not readily available.  I made a search for
it a couple of years ago and did not find any with my suppliers.  I
am sure it could be located on the internet today. I did not try.   I
will support the muffler, if possible with a bracket from the motor
mount  bolts on the pan rail.  If I can do that, the muffler  and
headers will move together.    Jerry

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