2150/350 to 346xp OE Conversion

[gvsu141]

I recently picked up a nice Jonsered 2150. Decent running with the standard intake leak & cylinder fins smushed up pretty good. Piston and cylinder wall in good shape.

I have a nice extra 42mm OE 346 top end. Would just need a new ring. Everything I see shows the conversion done with the 44.3mm NE. Will the smaller OE a good conversion? Or should I buy a NE kit?

Would I be better off using the carb off the 2150? Or the carb off the OE 346? Or does it matter? I have both ready to go.

2150 carb is a Zama C3 EL18 46A
346xp carb is Zama C3 EL18 27A

 

[gvsu141]

Any thoughts if I should bolt the OE cylinder on? Or get a NE kit instead?

I'll probably run with the carb from the 2150 unless I hear otherwise.