I'm working on an '85 maxi:
kstar 50cc, case-matched
treats 50cc hi hi comp head
14 bing carb with 15 intake
stock airbox with no snorkel and a few holes drilled
I haven't plug chopped but that's irrelevant, I've got an 84 jet in there and it's still not four-stroking. Could probably go higher. Am I going crazy? Why could I be needing such a big jet?
It idles fine while spraying carb cleaner around all the connections.