"Rogers, Bob J." wrote:

I understand that Third Generation RX-7 Mazda Rotary engines (93-95) use the
electronic metering pump, which is controlled by the computer that runs the
engine.  If the original engine computer is removed, and an aftermarket
ignition and fuel control system is used, like the one supplied by Tracy
Crook, which one of these pumps is the correct one to use for the Third
Generation block, and what would be the mechanism to properly meter it?

Scott Speirer wrote:

I called Tracy a few days ago to ask him if his EC2 has outputs to control the
electronically controlled oil metering pumps.  It currently does not.  That's not to
say that in the future he wouldn't incorporate this function.  He currently doesn't
know the specs for the e-controlled pumps.

I still have an order in for one of Tracy's EC2's, and may order one of Richard's
adapters for my '91 13B electronic oil metering pump.   I assume that someone may
know what the input voltage range is for these pumps.  It may be a fairly linear
function of throttle position, as I think the earlier mechanically controlled pumps
just have a linkage arm to the throttle.

Scott

It is a stepper motor so all three lines must be driven. The amount of oil injected
is a function of a lot of things. Not just throttle position. This is done for smog 
reasons. You don't need that complication in an aircraft engine.

Paul Lamar
 
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