George Lendich wrote:

Question 2: I don't follow you on this either. If you are talking about
milling out the partitions in the rotor housing I don't think that
would help the cooling with the stock two rotor engine.

Yes they are closed but we are talking about an entirely different way
of cooling the rotor housing with the one rotor configuration.
The one rotor with air cooled end housings would cool the rotor housing
more like this NSU cooling scheme. BTW note the two stage peripheral port.

Paul Lamar

Paul,
Is that what those little holes were - a second stage. How can this benefit
?
George (down under)

The little hole is the primary P-port. The bigger hole is the secondary P-port.
Better idle and low speed smoothness. Note the butterfly valve in the larger
secondary port close to the rotor housing. I nearly bought one of these cars.
I got a job offer at Chaparral and canceled my trip to Europe to pick it
up back in 1965. Good thing too as the rotor housing chronically cracked 
near the spark plug. 

Paul Lamar
 
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