FDChappy
Member
Hello I built a CT90 with a Lifan 140 from DrATV. The engine is bone stock except for a kevlar clutch upgrade. It is still using the carb that came with it which is a Sheng Wey pd17 also PZ-26. The main jet was a bit rich so it is now running a 93 instead of the 94.5 that came with it. The plug is a nice brown. Exhaust is an EVO BigGun oversized. Gearing is 17t front with the stock 41t rear.
The bike runs pretty well but goes flat at higher RPM's current top speed is just under 50 MPH/ 80 KHP. This is primarily a commuter (rural dirt roads) with occasional trail riding so I want to keep as much of the plentiful bottom end torque this engine currently has.
So where should I start spending my $ and what should I buy???
The bike runs pretty well but goes flat at higher RPM's current top speed is just under 50 MPH/ 80 KHP. This is primarily a commuter (rural dirt roads) with occasional trail riding so I want to keep as much of the plentiful bottom end torque this engine currently has.
So where should I start spending my $ and what should I buy???