Any issue with 61x cylinder on 64x cases?

[DamonB06]

I currently have a full 61x and found a complete running 64x for a steal. I want to put my 61x cylinder on these cases to keep the low rpm power. I know the 64x cases are cut for the larger 760 sleeves. Is there any issue with installing the smaller sleeve on the cut cases?

 

[BruceSki]

Absolutely not. The motor in my Superjet for the last two years has been exactly that.

Just plug the second pulse fitting if you run dual 38's instead of 44's.