your gonna have to make sure you can gear it high enough also because a chain saw motor only turns about half the rpms...Doesn't matter what carb or pipe..Its all about the porting,timing these motors have...There are a few companies out there that have taken these motors and converted them for rc's but it isn't cheep.. I would contact oneill brothers racing and find out some more info...These guys are awesome and will answer your questions even if you don't buy there products..