Jonsered super2 cylinder up-grade

[NWWrench]

Howdy all,
Just picked up a very clean Jred super 2 saw with a badly scored top end, looked like a straight gas job, tried honing but it was ran to long and will not clean up. I am curious on anyone's thoughts on a cylinder up-grade. This one is a 48mm and have read on people installing a 272 top end. Is it worth it or should I keep it stock, the saw is in great shape otherwise ,so it is worth fixing. If anyone has a clean nice top end , I have a 281 cylinder with carb attached for trade. Let me know.
Ryan

 

[Frank bierce]

I imagine you could swap a 272 top end onto it, which would make it a couple mm bigger than the 670 @ 50mm vs 52mm for the 272.
Never done one of these, but I’d imagine the intake setup on these is completely different...I think the 670 is a boot style, while the 272 has the intake manifold block.

 

[Stevetheboatguy]

@Johnmn

 

[huskihl]

If yours is a closed port 48mm, it's a 630. Best case would be if it was a 625 as it uses the same intake boot as a 670 and would be a simple upgrade. The 272 swap doesn't always work as sometimes the air filter cover won't seat down over the spark plug boot

 

[Dub11]

I got a 48mm cp head 4 sail if you need it.