Hi, I have a China girl (80cc) engine with fm80 con rod.
I had a couple of good years out of the original barrel/piston then needed to replace, the new barrel/piston I fitted only lasted a few weeks and never really bedded in!
On stripping, the rings where totalled as was the barrel and piston.
The rings had obviously moved off the location pins and got caught on the ports.
Is there a good quality upgrade top end I can fit to this engine or is it a case of buy a new engine and if so what would you recommend as a bullet proof engine?
Cheers, Pete.
I had a couple of good years out of the original barrel/piston then needed to replace, the new barrel/piston I fitted only lasted a few weeks and never really bedded in!
On stripping, the rings where totalled as was the barrel and piston.
The rings had obviously moved off the location pins and got caught on the ports.
Is there a good quality upgrade top end I can fit to this engine or is it a case of buy a new engine and if so what would you recommend as a bullet proof engine?
Cheers, Pete.