1977 KZ1000 Restomod

zed1015 wrote: I always go for the smallest that will satisfactorily feed the engine as this keeps the bottom end crisp.
Too big and the bottom to mid range response will suffer and that's where you will realistically spend most of the time running.

zed1015 wrote: If you really think you may go for re-sleeving at a later date then you should have the cases bored now to save the extra work and cost splitting the cases later.

This was another question, I wasn’t sure if you had to match the case bore to the spigots. Good to here you can use a larger case bore with smaller sleeves. Is there a limit to size difference?

Calum, sorry to be double teaming here but the information will benefit all of us.

Mikaw wrote: Calum, sorry to be double teaming here but the information will benefit all of us.

calum wrote:

Mikaw wrote: Calum, sorry to be double teaming here but the information will benefit all of us.

I'm not usually up for double teaming but in this case it's absolutely fine

Mikaw wrote:

zed1015 wrote: If you really think you may go for re-sleeving at a later date then you should have the cases bored now to save the extra work and cost splitting the cases later.

This was another question, I wasn’t sure if you had to match the case bore to the spigots. Good to here you can use a larger case bore with smaller sleeves. Is there a limit to size difference?

Fitting a stock block on bored cases is fine and all you need to do is not fit the 'O' rings on the bottom of the liners as they have nothing to sit against and you don't want them dropping into the crank .
Also when fitting larger liners or a big block etc you need to watch the length of the upper most mounting bolt of the ignition housing .
Depending on the liner size it will need shortening or it will hit the liner spigot and cause damage when tightened.

zed1015 wrote:

Mikaw wrote:

zed1015 wrote: If you really think you may go for re-sleeving at a later date then you should have the cases bored now to save the extra work and cost splitting the cases later.

This was another question, I wasn’t sure if you had to match the case bore to the spigots. Good to here you can use a larger case bore with smaller sleeves. Is there a limit to size difference?

Fitting a stock block on bored cases is fine and all you need to do is not fit the 'O' rings on the bottom of the liners as they have nothing to sit against and you don't want them dropping into the crank .
Also when fitting larger liners or a big block etc you need to watch the length of the upper most mounting bolt of the ignition housing .
Depending on the liner size it will need shortening or it will hit the liner spigot and cause damage when tightened.

There’s no replacement for experience. Thanks Zed1015