Reply To: Umbau von Gt125r motor auf GT250 Motor
Your just have older style carb, use the 125cc as it is updated. It has jet pump on the side. It is not critical , but helps a little bit on throttle that is all.
Coils = Same for all GT/GV carby models for 125 and 250cc. You will be fine. Otherwise, take 250 electrics and put it in 125 if you’re worried and keep the old 125parts for spare.
Service manual will tell you more on electrics if you want to check coil & stator resistance etc.