In a message dated 12/3/2004 1:44:08 PM Central Standard Time, keltro@att.net
writes:

<< I have a 6 port rotary engine and was wondering if the 1988 exhaust
manifold that Paul was using would fit my engine.
 Do you or anyone else know if they are compatible?
 Thanks,
 Jim Maher
  >>


I don't know. I make my own from thick wall tubing bends and the Racing Beat
flanges. It is very easy to do, and there is a need for a very custom design
anyway, not unlike an aircraft installation. I used some available tubing that
had an ID of just under 2". The wall is close to .145". I don't know what it
was but it worked out great.
I had made a set from .120" wall and then wrapped them with heat tape. They
melted. So either use stainless for everything, or don't heat wrap the carbon
steel headers. That heat wrap sure cools things down. So stainless is the
answer.

Lynn E. Hanover