I have a friend in Denver who is willing to set up his milling machine to mill out some P-Ports on a couple of my old rotor housings over Thanksgiving break.  My question is if any of you know where I can get a copy of a template for use with 1.5" diameter intake pipes.  I would think there would be something in the public domain by now (but I could be wrong).  The potential benefits of a P-Port make it pretty attractive to at least experiment with at some point and I will be happy to develop between 160 and 170 hp in my 9A so I think that should be doable...

 

Doug

RV-9A, 13B installation