rd250c cylinder advice

[steelerd]

Hi guys,

Contemplating whether to have these rebored or source a good used set to fit if they are good enough on a lower bore or then rebore them.

RD250C removed the top end today because it sounded clacky since I got her (piston slap)

Noticed they seem like they have been tuned spotted some knife edging to the transfers and noticed the exhaust port seems like a razor to touch not been chamfered.

What's the max permissible overbore on a 250c?

Not sure if the ports have been raised.

So question is guys which way would you go?

Cheers,

Tom

[steelerd]

Just to update bought a set on 0.25

[steeley]

What ever you do with your new cylinders make sure the sharp edges of the ports are filed off .