im listenng to this, search 50cc on here i have lots of posts as some of you may know. Using a racing 50cc u really do need the right pipe, cylinder wise you want a stage6 50cc, polini evo or mhr 50cc. I have a stage6 50cc and used with a laser x-pro i got 67mph (clock speed) which wasnt bad for a near stock engine. But the pipe didnt match so acceleration was like standard, although there was a rpm which is did work and hell did it have some power. Pipe wise i think you want a c16 or c20. You could port your stock cylinder (bin there) on the same setup it worked better than the racing cylinder but wasnt as powerful and top speed isnt quite the same but its close. bearing in mind was only my exhaust ported to a degree which i thought was right.
Btw what pipe cant you run on a 50cc racing, tried the x-pro did nothing (the nardo, shot, doppler will run nicely apparently but not best for performance so might aswell be same as x-pro) c16 manifold bit apparently too big for 50cc pipe, polini evo isnt road legal. What do people run their 50cc on?? and why cant the x-pro work properly.
