I have been wanting to build one of these things forever and now it has finally materialized! One of my good friend's (willd200x) from 3wheeler.org helped me out a tun on this build, he did the frame work and helped me out with some other things also so i owe a huge thanks to him.. I used a 85...

So i am building a atc500R with a 1986 cr500 motor and would like to know what size carb would work good on this engine.. Currently it is running a stock PJ series carb.. I havent been inside the motor so i don't know the extent of the internal work, however what i do know is that it has been...