Tuning a Yamaha Bronco engine, part 2

Continuing from part 1: assembling the tuned engine. A single is simple, and watching it come together was a good lesson.
On startup there was an odd noise from a valve. Next time, the cause and the fix.

Continuing from part 1: assembling the tuned engine. A single is simple, and watching it come together was a good lesson.
On startup there was an odd noise from a valve. Next time, the cause and the fix.