"Brian D. Cain" wrote:

Hey Paul, I wanted to share with you some pictures of something we're
experimenting with here on a friend of mine's car.  The engine is a 13B four
port, Series 5 (from 1989 to 1991 with the upgraded tension bolts, rear iron
dowel pin casting, etc.).  It is extend ported and also "half-bridgeported"
meaning two, 1 1/4" long "eyebrow" bridgeport cuts cut on the secondary port
outlets on the front and rear iron plates.

Look at the link(s) below.  I think you'll get a kick out of this and will
entertain you for a good half-hour or so.

http://www.teamfc3s.org/forum/showthread.php?s=&threadid=13243
http://rx7.cyberosity.com/87GTR/pics/2003/05212003/

Using a 5V wideband O2 sensor and calibrator/meter, I was able to tune his
fuel injection system to run in the 11:1 air/fuel ratio range at 12psi of
boost pressure at 7,500rpm, with this turbocharger.  This turbocharger is a
Borg-Warner (KKK) unit built for a 10 litre Cummins turbo diesel engine
(yes, for an 18-wheeler big rig).  At that load, we're estimating the
braking horsepower around 420bhp or so and it wasn't even breaking a sweat.

These rotary engines never cease to amaze me in how much power they can make
if you can manage to keep them cold and figure out a way to cram more air in
and out of them.

Enjoy.

B

I don't think that turbo is big enough Brian :)

Paul Lamar
 
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