An interesting question (FINALLY!). I have a similar problem with
a Formula Junior motor, but I'm almost certain it's the crummy carbs.
Mine does this, but only on right turns. Left turns seem to be no
problem.
As a thought to your question, there is a thing called "standoff"
that is affected by the length of the intake runners, as well as the
cam, etc. At certain RPMs, there is a kind of reversal that happens
between the intake and exhaust that hinders flow into the motor. I'm
probably not explaining this correctly. Perhaps opening the intakes a
bit later prevents the standoff effect from choking the motor. Do
you have an O2 meter on the car? I'm trying to get more info on my
problem using one. If your motor is running lean when it stumbles,
that may be a clue.
>NOW the question is (and I really don't know the answer) what is
>happening in those first .050" lift that is causing this breakup?
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