Subject: RX8 p-port dyno runs
From: Rotary Engine
Date: 11/16/2007, 11:05 PM
To: AARotary Engine



       We now have Mazdatrix dyno runs on the 2 inch steel tube welded RX8
       p-port
       engine.

       Far more torque and HP than the RX8 high power engine in the
       6000 to 7500 RPM range. This is the range we use with the 2.85:1
   PSRU.
       This had a 52 mm Weber carb which unfortunately is smaller
       than the 58 mm Weber carb we used on the 2nd gen p-port engine
       dyno runs. The 52 mm carb is showing signs of being too small.

       The 2nd gen P-port engine is now running in Mark Suspinski
       Mustang II. Hopefully that will fly soon.

       Dave Lemon commented that the engine had extraordinary stand off
       fuel/air mist
       above the carb with the stock RX8 exhaust manifold. This is to be
       expected
       as organ tuned p-ports don't like exhaust back pressure. We use ram
       air plenum's
       so this is not a problem for us. A supercharger exhaust manifold
   and
       stright through
       muffler reduced the stand off and increased the power. Dyno run B.

       More pictures on Monday and perhaps a video of the engine running on
       the dyno.
       --
       Paul Lamar ...No rotor no motor.



   Looks great!  The side exhaust doesn't seem to be hurting too much..


   Matt-

   I am relieved about that too :)
   --
   Paul Lamar ...No rotor no motor.


And it seems like it's probably easier to build a p-port Renesis than to
build a manifold with all of them skinny side ports..


Matt-

Yep.

Paul Lamar ...No rotor no motor.

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