What is the purpose of the small rectangular ports (.385"X.775" and .540"X 1.155") that are >just below the main oval intake ports of the engine housing.  Is it really
required to feed turbo pressure to these smaller ports also or can they be blocked off?  They >don't appear to feed the combustion chambers or am I wrong?

Regards,  Chris Gentry

                 Glasair (Turbo Rotary)
                  Dragonfly (Turbo Subaru)
                   Grumman Cheetah

I think that is the Exhaust Gas Recirculation  passage on the tubo engine.
You won't need that so block it off. It makes a mess in the intake passage anyway
and adds carbon and kunk to the rotors and seals slots. 

Paul Lamar

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