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Do you know of anyone who has a bore scope so you could look into the combustion chamber through the spark plug hole?

That may be the easiest route.

My guess is you'll put down somewhere in the neighborhood of 10-11hp with that motor. I have a 108 with 11 HP and I can barely hit 70mph full bore with a 26mm carb. With your motor setup, I'm afraid you won't have enough HP to push the bike past 65-70mph full open.

You have an interesting project, and I would request you keep us posted on your speed goals.

On a 12" tire bike, with a tad under 20 hp, I've seen people go close to 85mph with a full race motor. With 15 HP on tap, people get around 70mph, and with an 11-12HP motor, the most I've seen is right around 70.

Cool project...
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