Not true. Take a closer look.
      >
      > The Lemans engine generates 240 HP at 6000 RPM and ours is only
     generating
      > 226 HP at 6000 RPM.  I expect a bit more when we get the EFI working
      > with the slide throttle due to the manifold pressure loss we are
      > experiencing with the carb. I don't expect to EQUAL the Lemans
      > engine precisely because our pipes ARE a bit smaller.
      >
      >
      > Paul Lamar

It is VERY important to know what correction factors are being applied.
I would assume that the Mazdatrix data are corrected using the very old
method still favored in the automotive aftermarket community -- I think
the correction is to 60 degrees F and 0% relative humidity. The
correction factors that are more generally accepted by manufacturers (as
driven by the SAE) are far less generous -- 77 degree F and 30% or more
relative humidity if I recall correctly. The difference in reported hp
based on the two correction factors can vary quite significantly. I
don't know what correction factors Mazda uses for racing engine hp.

Jon

Dave, what correction factors are we using?

Paul Lamar

Congratulations.


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