Crank bearing question

[Stoneman]

Do crank bearings need to press fit on the crank and into the casting?

 

[crassius]

due to poor quality control, the answer would be 'sometimes' - when pressing is required, be sure to keep the crank itself true by putting a spacer between crank wheels on open side

 

[Stoneman]

due to poor quality control, the answer would be 'sometimes' - when pressing is required, be sure to keep the crank itself true by putting a spacer between crank wheels on open side

I had a feeling that might of been the case

 

[Stoneman]

Would it be ideal to shim the crank end clearance or apply some bearing retainer?

Bearing to crank is slipping on ATM

About to start putting my motor back together

 

[crassius]

I've opened many motors that had factory shims there. A bit of liquid retainer could be used with shims if bearing looks like it might spin between shaft & inner race.

 

[Stoneman]

thanks for that

What's good for shim material? I was going to machine some washers up

Thanks again

 

[crassius]

factories all seem to use small, steel rings - I'm guessing weight matters