We have also covered the fact that the carbs work perfectly at idle, when
the fuel usage is the lowest and the inlet needle should be working the
hardest. The ONLY way he could be squirting fuel to the radiator at high rpm
when the fuel usage is the highest and the inlet needle should be loafing
along is that the inlet needle is seeing a LOT more pressure. Vibration just
can't do that. As Bob said, it is easyenough to carefully plumb in a vacuum
gauge just ahead of the carbs and see what is really happening to the
pressure rather than just slamming in a Weber, having the same thing happen
to it, quietly fix the real problem, but be afraid to tell us that the Weber
didn't fix it so we all start to believe that there was a problem with the
SU carbs. Fortunately, Frank is never afraid to confess when something
doesn't work ;-)
David Lieb
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