One other item that is rotary specific, does anybody
know if there may be mixing trouble if you run
fuel/oil mix? I'm NOT stating this, I don't know.
I'm not a chemist and I don't even play one on TV.
Bill Jepson

Hi, Bill.  I have experience with road-going rotaries
and with 2-stroke dirtbikes, so if nothing else I can
give you a data point or two.

I've heard from many car people that premix works very
well without worry about the oil settling out of the
fuel.  I don't know how often they were driving the
cars, though, which could be a factor.  Clearly, if
you're autocrossing the car every weekend, it'll mix
the oil up nicely after just a few corners.  I haven't
heard anyone talk about having premature engine
trouble because of premix.

On the other side of the coin, I've seen countless
dirtbike engines that had seized pistons and a handful
of oil-fouled spark plugs from the last ride.  They'd
poured premix into the tank and then let the bike sit
for several weeks, and the oil settled out.  They were
running way too much oil off the bottom of the tank
(thus the fouled plugs) and once they got through the
oil, it ran like a raped ape...  for about 5 minutes,
until it seized due to lack of lubrication.

If it was me, I might adapt the Mazda oil metering
pump to draw from a reservoir of two-stroke oil rather
than the crankcase.  Then you get the cleaner burn of
two-stroke and don't have to worry about depleting the
oil supply in the crankcase; also, you don't have to
worry about oil settling out of the fuel (I don't know
if it happens enough to be a problem, but it's easy
enough to eliminate any worries about it by using the OMP).

Adam Wade


The next message should be interesting :)

Paul Lamar ...No rotor no motor.

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