The 8,810 rpm for Mike's 115 is 150 rpm higher than my own 115. I'll have to examine mine a little. I used a .5 mm larger diameter tube for his velocity stack which means his velocity stack is .75 mm larger than the carb venturi. That's a mighty big 65.
My "A" version on the right, Mike's "B" version on the left.
Last edited by 1200SportsterRider; 06-17-2021 at 03:34 AM.
Reason: Add content.