Todd Carrico wrote:

Bill Freeman wrote:

Paul,
I may not have been clear, I am suggesting the venturi is
in the fuel line and the oil mixes into the fuel via a metering
orifice.  It occured to me after I hit the "Send" button, the
someone might think that I mean to suck the oil into the
intake manifold - which might work, too. Use a gravity feed
of the oil to basically a fancy "T" in the fuel line with a
venturi for the fuel direction and a metering orifice for the
oil in the other side of the "T".

Bill

A venturi works because air is compressable.  Fuel under presure in a hose
will not compress.  More likely you would presurize the oil tank with fuel.

A venturi after the buterfly in a peripheral port would allow for a vacum
signal in proportion to RPM.  This would also keep you from streaming oil
all over the inside of your manifold.  I don't know if this would mix very
well with the fuel/air, and you still have to figure out the ratio.

I wonder if you could use a fuel injector, just use oil instead of fuel.  A
bigger injector would allow for the viscosity difference, and you could run
the mixed fuel until you get the ratio figured out. (when it smokes, back
off on the fuel/oil mix until you are not adding any oil to fuel).  You
might be able to slave the oil injector off of the fuel injector, and the
timing would be taken care of.

I guess my hangup with mixing is that "bumping around during taxi" just
doesn't seem as positive as "Oil Injection".  It Sounds like I am not alone
on that.

tc

The fuel injector is a good idea. You could put it right
where the oil injector is located now. You would need a pressure
pump of course.

I am sure Tracy has just been dumping it into the tank for
820 hours. I could be wrong.

Paul
 
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