To All Rotorheads,
    I just want to post a progress report and ask one question; first,
the progress report. Everything is progressing,
it just doesn't happen fast enough. Modifying an automotive engine for
aircraft use is extremely time consuming. I
have been at this since June '07, almost six month's and I'm still not
finished (10-14 hour day's, just about seven
day's per week).
    The engine does look good though; the cast-iron part's are painted,
the aluminum part's are polished (satin finish),
and even the PSRU has been lightened and polished. I also did some
really light intake porting. I have my motor-
mount's ready for welding, the coil's are mounted, and I'm presently
working on the mounting bracket for an RX-8
sensor. The bracket was not difficult to design or fabricate and for me
the weight saving's was worth it. Only two
pound's, but a little here and a little there and before you know it you
have lost ten pound's.My ECU is back from
Tracy and has been up-dated as well as re-programed for the RX-8 sensor
and coil's. Next, the intake and exhaust
system's and it should be ready to run; hopefully by the end of February
'08.
    Now the question: does anyone know the exact radial off the e-shaft
that the RX-8 sensor sit's. It can be in
degree's, minute's, second's or in hour's, minute's, second's. I can
work with either one. Starting point, of course,
would be at the top ("0" degree's or 12 O'clock). Hopefully, one of you
can provide this information. Thank's!

Frank R. Clementi

I assume you are installing the RX8 sensor on the 13B Frank.

There is nothing in the RX8 manual about the position of this
sensor. Mazda assumes you are using an RX8 E-shaft, computer and pulley
hub. As I recall Mark Steitle installed one on his 3 rotor.

It looks like it was bolted to a stock 3 rotor hub using the stock
hole position, spacers and a stock RX8 trigger wheel.

As I recall Mark's original custom pick up bracket was steel and apparently
the pick up did not like steel. Or perhaps it was the other way around.

What say you Mark?

Here is an old message.

01/23/2004 08:33 PM
Bulent Aliev wrote:
> >
> > Hi Paul,
> > The main pulley diameter on the Cosmo is 128mm about 5". The trigger wheel
> > should be about 135mm I guess?
> > I just mailed you the RX-8 one Priority USPS.
> > --
> >
> > Bulent

I got the RX8 trigger wheel Bulent. Thanks. The good news is it fits
the 2nd gen E-shaft flange weird bolt pattern. I am not yet sure about the
timing but Tracy could handle that in software.

Paul Lamar



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