Looking throught the Jegs catalog, I see a few mufflers that are of

interest- especially the Edelbrock RPM series-409 Stainless and internals,
ceramic packing, purportedly capable of handling 1800 F. Also the Edelbrock
304 Series. One muffler that was interesting from a construction standpoint
was the Moroso spiral flow Muffler- but it's made from  a "high Grade
Steel". Were it made from 321 or inconel it would be an interesting choice
for a rotary.

You can peruse the catalog at http://www.jegs.com/

Brian Trubee

Brian,
Although not the same, it is similar in concept to the Turbo muffler design
from down under, I put a little while ago.
George (down under)

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