Jim Brewer wrote:

Paul,

You said...."the RX8 engine has somewhat lower exhaust temps" .

Precisely, how was

this achieved?  One would think with the engine turning higher RPM s  to
make the extra HP the temps would be the same or higher.  Please expound

on this.

Jim Brewer

I think they delayed the exhaust port opening and recycled some of the un

burned

hydrocarbons that were burning in the exhaust manifold. I also suspect a

bit

more of the exhaust heat is going into the cooling system because of the
side exhaust ports.

Paul Lamar

Harrison Young wrote:

Paul,

I was wondering about this also. How much cooler is the exhaust on the RX8?
Do you have any numbers?

Harrison Young

No factual data. Just claims by Mazda.

Paul Lamar
 
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