Well, I messed with the metering lever, but only a bit at a time. I kept at it until I got the needles in a good range like 1.5 turns out. I have not received my muffler from Wackerengines yet and the venturi is only 7.94 mm (wt-160B) on the carb I have. I am spinning a MA 16-8 at 7600 rpm. I wonder if the new exhaust will improve it much? Cause I'm a greedy little bugger when it comes to RPM. I like to have more rather than less than enough.
What would you estimate the increase in rpm with the big bore carb?
Thanks