YZ80 to YZ85 conversion

[swoop]

Does anyone know if a '02 or '03 YZ85 top end (cylinder, piston, head, etc.) will fit on a '98 YZ80 bottom end?

Thanks

 

[viking20]

As far as I know, it will fit....You wont get a -02/03 yz 85 out of it though.The carb is bigger,and the crankcase compression is different(shrouds on the crank).We had a 2000 bored to 85,gave it a bit more bottom-end.....

 

[ACS]

The pipe is different as well as is suspension etc etc. If you have destroyed a barrel you can sleeve it or have it replated and made a 85cc