> 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.
 >
 >
 > Congrats Paul, Can't wait to see the video! How well will this
 > work with
 > the 6 port?
 >
 > Rick in Alaska
 >
 > That is the six port RX8 engine.
 > The four port version is no longer made anyway.
 >
 > Paul Lamar

 I know I'm a couple of years too far head but seeing Paul's
wonderfull PPort Renesis and the dyno results.  One could only dream of
the dyno result of a 16X PPort on the same dyno :))

Thank you very much Paul I'm very excited with the Renesis results.

Marc J
Nexus Mustang


Well if you go strictly on displacement increase it should be 3.2/2.6
times old HP or 290 HP at 7000 to 7500 RPM. Unless Mazda goes to my
trapdoor p-port concept I don't think the stock 16X will see that
much HP at 8500 RPM. I think the most significant thing about the 16F
will be it's huge power to weight ratio advantage over a six cylinder
aircraft engine.