Lynn

We just ran across the pictures of the homemade PPort housing we had

stored.

Noticed that the factory PPort doesn't have the liner in the exhaust

port.

Is that the way they do it?
If so does the housing ever have any problem with the heat on the

aluminum?

Royce

   Not a problem at all. The liner keeps the EGT a bit higher for better
reactor
   performance and a bit less heat going into the coolant, but none of this
is
   detectable by any means short of expensive instrumentation. For anything
short
   of racing, the port diameter produced by removing the liner is a bit too
big. It
   doesn't hurt anything to be in there, and at 6,500 RPM there is no cost
in HP.
    When the liner is removed for a race engine, the outer ring is replaced
with an
    aluminum replica to keep the port under 2 inches ID.

    Lynn E. Hanover

Thanks for the reply and info Lynn.
The reason for the question is because we are building a single rotor
with side exhaust ports and P-Port intake.
Since the housings are aluminum that question came up. We know though
that piston engines running aluminum heads have no problems with that.
Paul just mentioned in a recent reply that he would like to try that idea.
The housings we had at Sun n Fun were designed that way.
We removed the liner from the rotor housing exhaust port and will use
that port as the intake.
The end housings are aluminum and will have the exhaust ports in them.
Since we are building the end housings we can set up the port timing
like we want, similiar to the Rx8 engine design.
Royce

 
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