Probably the greatest effect on the BSFC is the capacity to lean with
    > altitude so as to keep the EGT's as high as possible all the time.  This
    > occasions two things --- a very robust first foot or so of the exhaust
    > system and careful attention to how you are going to get the additional
    > heat out of the cowl.  Both are do-able.

I 've been thinking about using the Schedule 40 304 stainless for the first foot or so of my exhaust system, but I can't bends that tight -2" inside diameter with 2.35 OD pipe. What I have now is
2"Diameter .049 321 Stainless bends. I'm a little concerned that the bending stretched the material to an unacceptable thinness right where the pipes are the hottest.
Of course I am going to have a SS heat shield completely surrounding my exhaust system, but I was wondering if ceramic coating the pipes would help keep the pipes intact.

Anyone?

Brian Trubee

I think you would be better off welding a conformable patch on the pipe.

Ed Anderson 304 SS .140 wall exhaust pipes don't even discolor :)

Paul Lamar

 thick wall ss 304 310 and 321 are manufactured in 45,90 and 180 bends for the boiler and oil field industries.

    I bought the pieces for my exhaust system at a local oil field
supply
    house. as an additional benefit they are beveled on the ends and cut
    square. made manufacturing the exhaust a one day job including
    driving back and forth between my shop and the hanger.

    smale@ncinternet.net

 
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