I need to find thid guys engine builder.

[hoosierlogger]

What a pant load. Id like to know how to get 80 hp out of a 125cc engine

http://bloomington.craigslist.org/mcy/2478226437.html
here is the same lad on a different site in case craigslist ad gets removed for any reason.
http://www.hoosiertopics.com/cgi-bin/aforum.isa?req=2Qy760928a

[Thorpe]

Whats a thid? Maybe it builds 80hp with a 50 shot of NOS....

[Xpress]

Look at that pipe it pushed 80hp easily!!! :lol:

[just ben]

although its not just a dirt bike engine hard to believe that it could put out that much hp. I'm sure someone with better internet searching skills than me could find the rated hp for this engine. close to 40 hp is what I found very impressive for a 125

[Midnite_rider]

Either way... it's still a nice cart. I WILL not be on it when it goes 140+. That is not one that you would be riding down the street or letting the kids ride. That is a serious race vehicle. It doesn't have the ground clearance to go over a pebble without scraping the skin off of your butt. But in the right setting that thing would be a blast. I have driven some shifter carts in my day and they are really fun.

[WilliamJ]

He's mixing the 125 with the 250. The best 250cc Liquid Rotax twins produce around 95hp and reach 160mph.

To reach 140mph you would need about 65hp and fully faired in bodywork.