Paul,
In looking at this drawing
http://www.rotaryeng.net/Lemans-rotor-dimensions-overlay.jpg

I see that the center of the port is 8.60 inches, however, there is a
downward angle on the port rather than straight in from the outside data
point.  Do you have any data on that angle?

Jim Brewer.

No but I could scale it if it were important.
People go from straight in to perpendicular to the inner surface.

It does not matter much.

IMHO perpendicular is a big mistake as the air must turn up at first.
I think an up slope would work the best. In the A/C biz we are
not looking for the last little bit of HP like the racers do:)

We get 250 HP at 7500 RPM going straight in and it makes it real easy
to set up and bore the hole.

Here are some straight in pictures of the factory P-port housings.

Paul Lamar

Are those renesis p-ports or did they use them in another model ?

John Gibbons

I don't think the factory ever made P-ports housings for the RX8 engione.

Ours  work great however. They idle great and have lots more power.
The best of both worlds.

Paul Lamar


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