Paul, is there an equivalence calculation between turbo boost in pounds,
and increased exhaust temperature? In other words, what are the peak
exhaust temps over 1700deg /F/ that I will have to deal with. Thanks

Dave James

Fundamental law of physics.

(P1 V1 )/T1 = (P2 V2 )/T2

Pressure, volume, temperate.


http://wolgemuthe.psd401.net/chemistry/09%20-%20pvt/studyguides/pvt%20formulas.html

The rotary will put out 1800 F to 1900 F right at the peripheral exhaust
port on gasoline.
The side exhaust port RX8 will be  up to 200 F lower. The extra energy
goes into
the RX8 cooling system.

You don't have to locate the turbo there. If you mount the turbo behind
the engine
the exhaust manifold will radiate some heat and loose a little energy in the
process with the above equation. You can even water cool the exhaust
manifold and use a cheaper turbo :-)

Paul Lamar

Hi Paul, Using water and/or ADI would be effective in reducing exhaust
temperatures so that exhaust piping and turbo survive short duration high
power operation.  Most top Reno racers are in fact water cooled with ADI and
spray water

Murrry Rozansky

Yes for the exhaust temp but our cross counter flow heat exchanger is working so well
now, on the TTC, that I would not be a bit surprised if it was adequate for 600 HP continuous.

Paul Lamar


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