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You definitely need expansion joints. Tubes sliding within tubes, or
some other type of flex joints.
The thermal expansion/contraction simply kills those short runners.
Finn
Yep, I'm re-doing the whole exhaust system. No more inconel and no more
tangential collector. It's probably going to be 2" x .065 wall, 321
Stainless tubes going to a collector and muffler of some sort. I seriously
like the idea of non-welded joints - nothing to break off!
Joe Hull
Cozy Mk-IV N31CZ (65 hrs - Rotary 13B NA) Redmond (Seattle), Washington
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