Cranck 60mm with a PX125 engine

Hello,

Does anyone have built a PX engine with a 177 pinasco kit (or similar) and a 60mm cranck ?
Do I need to upjet ? I’m actually running a PHB 30 and SIP pipe.

And also do you know the right timing for this setup ?

Thanks

[:itchy:]

why do you think a 30mm is too big ?
Sip recommends it in the catalog, and when I asked them Ralf says it’s good.

Yes, the casing are ported.
And the carb work, but the truth is I didn’t notice any improvement :frowning:

But I hope that with the 60mm crank it will work better.

With the 60mm crank, I need to adjust the timing, but don’t you more…