Ok....a little stumped here. I have a 77' Newport with a 70cc Kstar, 15mm Bing, Bing mesh filter, Bing 15mm intake. since getting the Techno Circuit pipe I seem to be stuck with either great low-mid range, or great top speed. It wants to run rich low/lean high, or to make it run right at the upper RPM range, I have to have it just about flooding up to wide open throttle.
I've tried an 80 jet with the needle at the lowest/leanest setting and it pulls hard up until about 35mph. If I switch to the 82 jet (also needing the leanest needle setting) it will go 50 mph.
Any ideas how to make it run "right" all the way through the rev band would be greatly appreciated. I also have a 12mm Bing carb that I can use to cannibalize parts... I was wondering if the atomizer from the 12mm would solve my issue with the larger 82 jet?
Thanks for the input,