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Message: [QUOTE="okkarner, post: 1402828, member: 120826"] OK. I bought a 77 Yamaha IT400 that a guy had "tried" to turn into a cafe/street tracker bike for $200. He said it would start on starting fluid. After a major makeover and a carb cleaning along with a float adjustment, it is running and I have been riding it back and forth to work for about a week. The problem is that it feels like I'm riding on a yz80(it's slow). I am no mechanical genius and I'm not real great with carbs, but I know my way around a tool box and have been riding motorcycles for 15+ yrs. I just need some help with this one. It feels like it doesn't rev up all the way. It doesnt have a tach so I dont know what its actually turning. Also, I dont know if it has a powerband like a more modern 2 stroke, but if it does, I cant tell because its not hitting it. It revs up to my best guess of around 4000 rpms, then starts cutting out like it has a rev limiter. But it doesnt. All the drivetrain/gearing is factory. The only things changed from stock is the pipe was cut up/modified to run under the motor and it has an after market cone type filter. It is very disappointing to ride when you know its a 400cc two stroke and it performs like a moped. Everything I have read says the IT400s are fast as hell but this one is not. I have read other threads and it seems like it could be 10 different things. SOMEONE PLEASE POINT ME IN THE RIGHT DIRECTION!!!!!!! [/QUOTE]