MS231 cylinder question

[Shed_7]

Hi, just got hold of a 2011 MS231, from what I can gather this is 41.5mm bore, capacity 40.6cc. I would like to fit 44mm big bore (MS251) cylinder to it. Is it just a matter of sourcing a 4-bolt manifold and no other changes? Thanks

 

[DND 9000]

That should be possible. Crankshaft, engine pan, engine housing are the same on the MS 231, 251. Of course you need the MS 251 piston and rings too.