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Atlas Main Brgs

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Atlas Main Brgs

Posted by don_raulin at Saturday 22:59

I geuss I sent an email regarding subject

Assembling Atlas Engine #121497

One superblend and one roller!

When case halves are cinched up the last .040" on one side -engine locks as inner race binds against case bore surface

Looks as if roller brg is slight less in width ? or is case distorted?

Have no history as its an old basket job. Don Raulin USA

Re: Atlas Main Brgs

Posted by john_holmes at Sunday 10:12

Surely if the inner race is binding on the case then the bearing is too wide or a bearing is not seated correctly. Have you compared the radii on the crank, crankcases and the bearing to ensure a radii mismatch is not stopping a bearing outer being fully home in its housing or bearing inner on a crank journal.

Re: Atlas Main Brgs

Posted by don_raulin at Sunday 13:28

Have verified inners are all in on crank

checking outers in case tedious but will verify next and check radii on inners

will also search for bearing dimensions

Re: Atlas Main Brgs

Posted by don_raulin at Sunday 16:26

found it! outer race timing side not fully seated, when I installed originally

, it dropped in so nice with warm case/iced brg race I thought it fully seated.

back to basics I preach-sometimes don't heed

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