Paul - would atomization of low pressure fuel work better with a venturi as
is done in a std Lyc carb vs.a "hole in the side of the intake" ?  wouldn't
the fuel orifice need to be out of a boundary layer for better mixing so as
to not simply coat the walls of the intake?  i realize that the
marvel-scheiber type carb has zero pressure(or a vacuum actually) to the
venturi, but you are talking 3 psi instead of 45, right?  seems like the
fuel should be introduced to the center of the air stream, especially when
the "squirt" isn't very much. a little turbulence would help too, right?
kevin lane

Perhaps. I suspect the negative effects of coating the walls
of the intake is an urban myth left over from carburetor days.
In the old days you would have two or more runners per carb throat
so coating the walls on one more than the other led to a poor fuel
distribution and very uneven EGTs. With an injection system where
you have one fuel hole per runner all the fuel eventually finds its
way into that rotor. If there is wet fuel on the wall it soon
evaporates and finds its way into the compression chamber as well.
It cannot go anywhere else. I have seen systems that shoot the fuel
in perpendicular to the runner axis and it apparently does not
matter. The 13B is a good example. Particularly at high power when
the air flow through the runner is several hundred MPH.
It is like pissing into a hurricane :)

Paul Lamar ...No rotor no motor.

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