I decided to bench test several carbs for maximum air flow rate and fuel suction draw. A friend has a Superflow SF-260 which is perfect for our little engines. I laser cut a piece of 1/4" acrylic and tapped holes for common carb bolt patterns. I have a variety of carbs for CMB 67/80's and stock...
I just tried out a OS carb on my 67 HR green head this past weekend. Installed the motor in my smoking joe scale and holy crap! I am astounded and amazed in the performance increase it has made!
Don I must admit that I was a bit skeptical when you made the suggestion but OMG what a difference...
