My 31 is pure stock. On mag with the stock carb and a straight exaust pipe. I think you'll find that there not all that much you can do to get a big boost on this engine because of the small intake and exaust valves.
ORIGINAL: NorfolknGood
Thanks for that
Tauri Flyer what carb were you using? I'm wondering if it was a carb/prop issue or if the 20" is just to much for the Honda. Do you have CDI or mag ignition as again I believe this alters how they perform quite a bit. I'm still waiting for my driver so cannot do any testing till I gets done