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Crank bearings nb50m 83-84 model copy questions.

Posted: Sun Feb 07, 2016 12:30 pm
by NB50clonePGO6GOD
To make a long story short, I don't trust NOTHING about a 2 piece main bearing set I don't think my bearings are bad but I am going to visually check them soon.


Anyone have links to af01-05 crank bearings?

the correct case number is af01 though Honda the clone PGO case number is kp01 I wish to install heavy duty one piece main bearings set on a partial case split. I also plan to hand polish the crank on a desk.

Everything else is gravy work,


If I verify that just the seals bad and budget is low I'll just replace the rubber proportion temporarily til I am ready to split it again.

Making her reliable enough to get my endorsement for a bigger build possibly a 100cc nq50 bbk if the boltings match but that's future talk.


Hit me up with those seals and bear kits one piecers and 2 piecers please I'm logging to get on AF forum and modern buddy.

Re: Crank bearings nb50m 83-84 model copy questions.

Posted: Sun Feb 07, 2016 12:43 pm
by shotcaller
dood - imho take your engine apart and check bearing n seal sizes first. PGO maybe used different sizes

Re: Crank bearings nb50m 83-84 model copy questions.

Posted: Sun Feb 07, 2016 2:21 pm
by kuromi
The bearings will have a number stamped on them, usually on the face of the outer race.

This is a standard system (like Dewey is to books) and relates to the various bearing dimensions.
Use this number to get exactly what type of bearing you need.