Nothing wrong with being skeptical. The more I think about it, I wouldn't make clearance at exhaust. I'd put thin layer of rubber between your clamp and the psru. Same concept at harmonic damper on engines. In theory it would reduce stress concentration at your muffler outlet. FWIW

-al wick


<If the manifold muffler were decoupled from the engine, then the rear
bracket would also need to be de-coupled.  I've chosen to have the entire
system rigidly mounted to the engine.  Floating the rear bracket would cause
something to break.

I don't think there is going to be any visible "sine wave" in the short
length of 2 3/4" pipe.

Al G

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