A couple questions on the test set-up:

Were these 9.7 rotors/2nd gen?
Did the engine have the stock oil pressure regulator?
Under drive water pump?
Do you have a pic/diagram of the exhaust port which I assume was also
ported?

Cheers
Cary

Yes on the 9.7:1 rotors. No I think John at Mazdatrix shimmed the spring.
He seems to do that on all his rebuilds. We were seeing 130 psi warm
and 100 psi hot. No unfortunately I missed taking picture of
the exhaust port. But yes it was ported.

Paul Lamar

Paul,
Can you tell me how that is done !?
George ( down under)

I'll ask John in a day or so when I see him.

Paul Lamar