The sensor info is helpful because I'm presently identifying the ones on
   my 20B also.

   I recently heard someone say that if you are building a P-Ported rotary,
   you need to switch to carbon apex seals.  The caveat, as they described
   it, is that excessive turbo boost could shatter the carbon apex seals,
   but if you are running normally aspirated definitely use carbon.  I
   don't understand this.  Why would this be necessary?

   Don

   It is not necessary to use carbon apex seals with a p-port.
   The vast majority of rotary engines (over two million) have p-port
   exhaust. All apex seals used so far have no trouble. If anything the
   peripheral exhaust port is harder on the apex seal than the peripheral
   intake port.

   Paul Lamar

Thanks Paul, that's the way I was looking at it too, but being a Newbie,
I just listened and nodded.  I guess I was right to doubt the info.  It
sure is nice to have an experienced source to bounce this stuff off !!
Thanks again!!
Don



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