Hi , this is a cool site , ive been building awhile now but always looking for input on modifications to my engine , im now running a 66cc (80cc) engine with twin boost bottles w/nitrous and adjustable timing magneto and a performance pipe . ive tried the bigger carbs but didnt have much luck with them ( need porting ect.) So i switched back to stock carb and its working great. Im adding a high compression head so ill have to see how it runs .