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Author: Subject: U/S Bearing markings..
prawnabie

posted on 20/8/16 at 08:26 PM Reply With Quote
U/S Bearing markings..

Hi all,

The mains bearings on my 13/60 herald engine say .020 US on them. I assume this means they are to suit a crank reground .020? I am looking at bearings but they are listed as .020 oversize...

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theconrodkid

posted on 20/8/16 at 08:32 PM Reply With Quote
yup.crank is ground so journals are undersize





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snapper

posted on 21/8/16 at 06:14 AM Reply With Quote
You need to measure both the crank and the bearing tunnel as both can be bored/ground to a different size





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prawnabie

posted on 22/8/16 at 10:10 AM Reply With Quote
Thanks for the replies - here are the markings


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