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

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