A bigger carb will just flood the motor and will decrease your power unless you put on an exhaust and bore it to a 440 and take your time jetting it so you don't get a case of the honda hicup which occurs when your over jetted or under jetted

also if you buy a 12:1 440 piston and rings and have you cylinder professionally bored you will notice the power, but you will need to run higher octane gas. I run airplane gas.. about 2.20 a gallon and around 100+ octane... be carefull tho with airplane gas.. it almost changes you jetting and you might have to drop you main jet down a little

 

i need somethin that will run off of pump gas. i run premium (91 octane) and i could buy some octane boost if i needed to, but i don't want to have to worry about gettin special gas.