I need to replace cylinder and piston on my LML Vespa 2001 150 cc. I decided to use this oputunity and upgrade it. I want simple "bolt on" solution. I do not want to alter the case. Preformance wise I want more low end torque and reliability. Top speed as it was with old cylinder (arround 100 km/h) is enough for me.
The exhaust is original. You lost me with "reed valve inlet". Everything on the engine is still original. It is 2001 LML. I was told that it is version of PX 150 engine.