If your air screws are turned out more than 2 turns you are not jetted correctly. The America (270 degree crank) will not run well with the CRs as the std Bonnie (360 degree crank). SUDCO has set these carbs for the std. Bonnie, 60 pilot, 120 mains, 5181 needle. Change to the 5183 needle, 2nd clip position - 58 pilots, 110 to 115 mains, air screw approx 2 turns out. You are over fueling the motor as the America is "Lazier" than the std. Bonnie, it wont take the fueling, furthermore these are cable direct slides, you hit the throttle the slides rise, no delay like the vaccum slides on the CVKs. Further info email me:
frank@precisionlithoservice.com
