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Sorry, it will be months yet until my engine runs again.
It ran on the dyno, now waiting to run on the airplane.
Roger, thanks
anyway.
RC Engineering measured 570 cc/min on my Mazda injectors that I used as
primaries. I have no measurements on the MSD 2013s. You can see on
the attached photo the 570s are in the rotor housings and the 2013s are out in
the TB.
Your secondaries are still pretty close
compared to others.
I’m not surprised at your
mixture knob settings. Mine were even more extreme. I don’t recall
ever running on the MSDs only below the staging point. For the 570s I had
to turn the mixture knob as far as it would go to get enough correction at idle,
and then it may still have been a bit rich. But I was running with a
constant pressure fuel regulator at 40 psi.
The default settings are for 460
injectors, so your 570's should run that rich. You may have to reduce your
mode 3 injector flow rate eventually.
I’ve
changed to a MAP referenced regulator, and I’m planning on switching the wiring
to run the MSDs as the primaries (if my wiring harness allows; I have completely
separate wiring to the two sets coming from different sides).
Tracy said it would work better
to have the smaller injectors as primaries, and he was right. It will
irritate me (almost more than the ugly cowl) until I can figure out how to get
the injectors matched, and switched back to normal.
BTW; a plug for TWM
Induction. I returned my constant pressure regulator and they very
promptly swapped my old fittings into a new MAP referenced body and returned it
to me – NO charge. A bright spot in my
day.
Great. They were very
helpful when I called with some questions about the throttle body, and they
didn't even care that it was for an airplane. I may call them again and
see if they can suggest a way to use other injectors.
Cheers,
Rusty
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