Ive opened a VBC1M 3 port engine with serial number 430711.
The flywheel side crank caged needle bearing measures 38x29x15mm.
I can’t seem to find a replacement on the SIP website. For this model, SIP carries a 38x25x15mm caged needle bearing.
Can anyone explain why this engine has an odd crank size?
I am thinking to replace the crank and bearings. I’m hoping that the Mazzucchelli 45000000 will fit using a 38x25x15mm bearing. Has anyone else tried this?