dyno/keihin jet comparison

[twuwver1@flash.net]

I could be all wrong here and please correct me if I am. It seems to me that the jet sizing from Dyna use standard orifice size numbering. I don't know for sure because I don't have a set of the wires that measure the jet sizes, but visually, I can see that their 150 is slightly bigger than the stock Kawasaki 148. I can also see that Dyna's 140 is smaller than the 148 and similarly with the Dyna 136, which is clearly smallest of them all. I think what Dyna has done is made a rather radical change to the needle which affects the entire range. This allows them to specify a smaller main jet, which in fact is SMALLER than the stock jet. ========

>Lost my notes so can anyone refresh me on the jet size equalivancy? >As I remember the dynojet numbers were an actual measurement and the >keihin numbers were not. After several months of snowmobiling it's >time to start thinkin bikes again. thanks wE