Yes I was stupid to believe the Official Honda manual. It mentioned that the needles were thin and thick. the springs are short and long. the main jets were different. but it did not mention that the Needle Jets were differen. one have the holes more towrds the tip of the jet. the other has the holes closer to the thread. has anyone an idea of where the jets go?
So I would have the following combination: front: Thick needles, short springs, 112 main jet, and holes higher up towards the thread. rear: Thin needles, long springs 110 main jet, and holes low towards the end of the jet. This is a v45 1983 or VF750 f
Those are not needle jets. They are emulsion tubes for mixing air in to the fuel, the jets just screw in to them. By changing hole size, adding or eliminating holes you can fine tune mid and top end fueling at times.
