<< What happens to the fit when the engine reaches operating temps?
 > Thermal expansion would differ between the aluminum body and the rotor
 > housing.  Lynn, as a man who has been there and done it, I would
 > like to hear your thoughts.  Jerry >>

Not much happens to anything on the cold side of the engine. The latent heat
of evaporation keeps the induction runners cool as well as the rotor housing
around the periphery port. The only heat to deal with is the heat soak after
shutdown.

I had no problem using exhaust pipe tubing for the runners and with a rather
loose fit in the housing. I had then stick out about an inch and used radiator
hose and hose clamps to connect to a manifold. The engine end stuck through
the rotor housing a 1/4" or so. I ground this off and rounded off the edges of
the port so that only OEM material was on the face of the housing.  I used
Devcon Plastic Aluminum, and filled the port area of the rotor housing with it.
An aluminum tube for the runner would be even better expansion wise. But there
was no problem anyway. So just do it and have a good time. Almost anything you
try will work fine and produce tremendous power. It will idle better than a
bridge ported engine (less overlap).

Lynn E. Hanover

 
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