Motorcycles
Tuning a Yamaha Bronco engine, part 3
The inlet valve was hitting the recess after the head was skimmed. After a fix, low and midrange torque are much stronger, and fuel economy stays above 30 km/L.
bronco
- Motorcycles
Tuning a Yamaha Bronco engine, part 2
The tuned Bronco engine goes back together. A noise from a valve on startup is saved for the next visit.
- Motorcycles
Tuning a Yamaha Bronco engine, part 1
Former tuner S takes the top end off a Yamaha Bronco. The engine is shared with the Serow, so the work applies to both.
- Motorcycles
Keihin CR carburetor and a slip-on, fitted to a Yamaha Bronco
The first visit with former tuner S: a Keihin CR carburetor and a slip-on muffler go on a Yamaha Bronco.
- Motorcycles
Yamaha St 225 Bronco Specs
Engine 223cc, Four Stroke, Single Cylinder, SOHC 2 Valve, Air Cooled Max Power 20 hp / 14.9 kW @ 8000
