Quote Originally Posted by zhu View Post
not sure this engine is a copy , sohc 4 valve watercooled, copy of what ?
Honda NX 250 1989

Displacement: 249.00 ccm (15.19 cubic inches)
Engine type: Single cylinder, four-stroke
Power: 26.00 HP (19.0 kW)) @ 8500 RPM
Top speed: 128.0 km/h (79.5 mph)
Compression: 11.0:1
70.0 x 64.8 mm (2.8 x 2.6 inches)

Fuel control: DOHC
Cooling system: Liquid
Gearbox: 6-speed
Transmission type,
final drive:
Chain