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8N engine bearings

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Author  [Modern View]

10-29-2012 14:41:00

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sometime previously this engine has had the crank done and new bearings, the crank still measures very close to specs and bearings have max of 3.5 thou clearance, but there are small specks of steel imbedded in the bearings, should I change them or not worry about that?

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10-30-2012 06:29:47

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 Re: 8N engine bearings in reply to boler76, 10-29-2012 14:41:00  
i would not even considder not chaig out bearings that had metal embedde din them.

as others said. check it all out now while it still may be salvageable..

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10-30-2012 03:33:44

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 Re: 8N engine bearings in reply to boler76, 10-29-2012 14:41:00  
If you suspect the metal was from the previously machined crank, the installer was very sloppy. Installers are always required to clean machined components. If the crank is out look for more metal to clean and check all mains and rods. Needless to say replace all bearings. If it's not from the previous repair you need to find the reason before reassembly. Gerard

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Bob Harvey

10-29-2012 15:52:52

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 Re: 8N engine bearings in reply to boler76, 10-29-2012 14:41:00  
You might think about taking the crank to a machine shop for a more accurate 'reading' and might get away with a simple polish and use new (same sized) brgs. Done it in the past, works well. HTH

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10-29-2012 15:49:47

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 Re: 8N engine bearings in reply to ericlb, 10-29-2012 14:41:00  
Quoting Removed, click Modern View to see

Change the bearings!! Where is the metal coming from? Debris like that will make short work of a crankshaft and bearings.


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10-29-2012 14:46:50

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 Re: 8N engine bearings in reply to boler76, 10-29-2012 14:41:00  
Probably work OK but now is the time to put in new ones. Got to some wear on the bearing.

Be sure to check out the oil pump wear closely while in there. That is really important for good oil pressure.


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