Thanks guys. FYI, after getting conflicting signals from the bike, I ended up taking the bike to the local 2-stroke guru to get the jetting finalized. $200 and 16 dyno runs later, he came up with 122 mains (felt there was 1-2 more hp to be had by going to 120 or even 118, but heeded my repeated instructions that I cared more about reliability than max horsepower). Ended up with 40 pilots and with stock needles after trying both As and Bs that I had left with him. This is with Tyga chambers, M-Max, and airbox with 8 10mm holes drilled in it, motor otherwise stock setup. He ran this jetting with the airholes taped over and also open - with airbox closed off there was a bit more midrange but top end peaked about 11k - with airholes open, hp peak was more like 12k. Hp was 61-62, which is just fine by me. Sadly, i can't really tell you how the bike feels yet, because 4 miles down the highway, it went on one cylinder and i came home on a tow truck - not related to jetting I don't believe - I seem to have a separate electrical problem that, in retrospect, was likely the source of conflicting signals I was getting from the bike when I was trying to jet it. If interested in helping sort that one, or if you just want to feel better off than me, please see my post on "coils" to follow. Anyway, thanks for the help on this one.
-Jim
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-Jim
'93 MC21


Last edited by Jim on Wed Nov 03, 2004 5:39 am; edited 1 time in total