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Honestly i just dont want to blow it up when i start it to break the new cam in. And its a new carb also. I have tuned carbs before just not in this setting................ Russell's cam card at NR says 2000rpms for 20min. 420cc clone with cam, longer arc rod to bump compression a little...

I'm building a T Bob frame with 50 in. wheelbase, 25hp clone, I weigh 215lbs....will be running 1/8 mile or possibly 300ft. I need a starting point for a final drive ratio or sprocket sizes. Haven't made the purchase yet, buy will prolly run a Bully 2 Plate clutch and shoot for a 4000-4500 rpm...

Maufactured Keystone Industries Ltd Model # 8500 , P date July 1972 Equipped with Tecumseh Model #H35, P date Dec 1971 Hi Ijust got this little beast and need some help. It is badged as stated and appears original. does anyone here have any literature or more information on these...