Is the cylinder block usable? It is bored +1 but..

81 KZ1000J cylider block was bored 1mm over, but it is rusty and needs to get bored to next piston size. Can it be bored for +2mm pistons?
thanks. Are there +1.5mm pistons?

car5car wrote: 81 KZ1000J cylider block was bored 1mm over, but it is rusty and needs to get bored to next piston size. Can it be bored for +2mm pistons?
thanks. Are there +1.5mm pistons?

You will have to go 2mm O/S which is 1075cc.
These are readily available from Wiseco and MTC via Pitstop performance (Joe Hooper) or APE etc.
Kits come with correct gaskets, circlips and rings etc.
Make sure you get the correct kit with 17mm pins NOT 18mm.

Thanks, Zed!
Just to make sure, so no sleeves necessary, right?

No sleeves. Just re-bore.