making one bike from two

[rynr]

summary (after 500 km (300 miles)):

With every kilometer it runs better (when GZ250 was bought there wasn't enough oil in engine - through accident GZ participate in - oil came to air filter when crashed bike was laying on side) - clutch, gearbox and "sound" are so much better than 500 km ago

Motul 300V is good oil. I recommend it for everyone. Mostly used in racing bikes and cars. Keeps engine clean.

Oil leaks from dust seal from left fork, but it's not a big deal. Seal replacing should stop leaking

Bike top speed and acceleration isn't worth comparing to 125. Transmittion has longer ratios. Bike runs faster than 125, driving is more delicate to acquire estabilished speed. No need to "juggle" transmition gears when accelerating or decerasing speed. I've got a feeling that 125 engine is to weak to provide comfortable driving on GZ bike.

But engine transplant - not worth doing Except many differences in parts, GZ125 frame isn't quite the same as in GZ250