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Exhaust hanger brackets made

2013 April 2
by Dirty Fingernails

Fingers crossed this exhaust works. It is from a 1930’s R12 BMW. I had a larger inlet welded to mate with the R75 headers. I hope they do not restrict power in any way or make the tuning of the engine difficult.
The headers and mufflers connect OK and luckily the brackets on the mufflers line up pretty close to the exhaust hanger area on the R75/5 frame.
To connect the muffler to the frame, I had to make some custom brackets to attach the muffler.
I made a test set out of aluminum and everything worked out OK. My holes were slightly off but I corrected for that later.

aluminum

Here is the test fit.
testFit

I took my brackets and a pocket full of cash to a local welding and machine shop. He replicated my brackets with stainless steal and put the holes in the correct place as per my instructions.
Stainless steel should withstand the heat, elements and keep its shape. I worried that the aluminum brackets I made would not do any of the above.

stainless

Here is the bracket attached to the frame:
HangerHung

There isn’t much room to work with in there but with the right nuts and bolts, everything went to together just fine. HangerDone

One step closer to starting this baby up!

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