Quote:
Originally Posted by Ron Kwas
AS; "the richer needles" implies there are a limited number available...in fact, I have no less than 3 8 1/2" X 11" pages full of dimensional data for metering needles for 0.100" Jets, the sizes of which are given in ten thousands of an inch accuracy (!)...determining which is "the one" for your engine configuration takes some engineering, and trial and error, accompanied by solid research and practical load tests, not just a quick look at the list...
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Which is why I bought mine from a well respected tuning company who made the inlet and exhaust manifolds also, and had already done the hard work selecting the right needle for my camshaft etc.
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