Hortons Norton
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- Joined
- Oct 12, 2007
- Messages
- 2,064
O.K. I have posted pictures of the bike I built and now I seem to be in over my head. First I will list what the bike has, Combat rebuilt with a Megacycle 560 NR cam, Single 34mm Mukuni carb, Bub 2 into 1 header pipes with VERY free flowing exhaust. Tri-Spark ignition. First start up went very well started on 4th or 5th kick, Idles great and when on the stand the throttle response is also very good. But when I take it out for a ride and it has a load on it, it starts to die at about 2,600 rpm or maybe a little higher. I have tried pilot jets ranging from 25 to 45 seems to make no difference, Main jets tried range from 220 to 270 and also moved the needle all around in different configurations. During this I thought maybe ignition? So I swapped out my Boyer micro-digital no luck, Battery is good and bike has a three phase sparx alt. I have tried different coils and a wire running straight to the ignition so I could eliminate other things that might be wrong. I think at this point I am totally lost as to why this thing won't get up and go. Any help would be great as the only thing I can think is maybe a bigger carb.????? Really sad. Oh also took the carb off my 75 that I know is good and same thing. Chuck.