i resently bought a snowmobile engine cheap my trailblazer engine needed magneto.so i put the snowmobile engine in it.it is a rotax 440 i am trying to get it to pull better it is like its slipping.it will only go about 40-50mph and i got everything in line motor runs great but more noise than go power any help would be appreciated.i have only got 30 bucks in the engine and 250 in the trailblazer i am trying to build dragger

 

Clutch alignment must be off.the sled motor's alignment and distance from ATVs secondary must be dead on perfect.

Here is a guy who put a 120hp Polaris XC700 twin 2 stroke sled engine in his Scrambler.

http://www.youtube.com/watch?v...NjWoCg&feature=related