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Author Topic: Carb needles  (Read 1685 times)
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« on: December 05, 2018, 07:40:41 PM »

The CB-1 from Heck article mentions switching out the stock J57A needles which are 2.51 diameter to thinner (richer) needles at 2.49mm diameter. Has anyone on the list ever sourced these thinner needles? Sudco is in the dark! Using an exhaust gas analyzer it is clear that the mid-range needs more fuel. Shimming the needles is proving less successful than using the correct needles.
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