Would anyone happen to have a curve of volumetric efficiency vs. RPM

for

a stock Mazda 13B that they could post? I thought I had one in my

books,

but I seem to be mistaken.

Nothing for the current side port engines Rob. I got a bunch of old

stuff

for side ports and for P-port engines. If you know th mixture ratio

and HP

it can be calculated.

Paul,

Any information of VE vs. RPM for the 1989-1991 normally aspirated 13B's
would be much appreciated.

Also, you wouldn't happen to have a BSFC curve, would you?

Thanks and regards,

Rob

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Those are hard to come by. What you really need is a BSFC map and those
are impossible to come by for recent engines. That is top secret 
information at all car companies.

The BSFC on the rotary is highly dependent on how lean you run it. It
 will run 200 degrees F  lean of peak. Tracy claims .47 for the current engine.

I have some early ones.

Paul Lamar
 
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