Does anyone know if anyone has ever installed a large (~600cc) rotax engine in a yamaha (any model) before? I'm just wondering the feasibility of it.... obviously it would require alot of custom work to mount it to the frame and transmission, along with custom exhaust..... but how impractical is it?

 

There are loads of banshees running Rotax engines for drag racing.

 

If you are going to throw a 600cc + 4 stroke rotax engine in it, just get a ds. If you are putting in a sled engine, its going to be a drag only machine so look at the banshee frame. Like was said, there are many rotax engines in drag banshees.

 

ask dabeechman he has good experience with rotax engines

 

I put a 580 zr motor in my golf cart. It was a nightmare be prepared to do alot of engineering and b*tching.