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Main bearing clearance
https://slantsix.org/forum/viewtopic.php?t=52642
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Author:  63dartconv [ Sun Jul 07, 2013 5:13 pm ]
Post subject:  Main bearing clearance

My mains are .002........is this ok? what should rod bearings be?

Author:  63dartconv [ Sun Jul 07, 2013 5:48 pm ]
Post subject: 

#4 0.038
#3 0.038
#2 0.030
#1 0.002

Author:  DusterIdiot [ Sun Jul 07, 2013 6:47 pm ]
Post subject:  Clearances...

mains should be .0005 to .002 if forged crank... I would not want them to be on the edge of the loose side.

rod bearings if a forged crank would be .0005 to .0025...again I would not want to be on the end of the loose goal post.

Author:  63dartconv [ Sun Jul 07, 2013 7:57 pm ]
Post subject: 

Are my numbers to loose?

Author:  63dartconv [ Sun Jul 07, 2013 9:56 pm ]
Post subject: 

Im such an idiot! 2 3 and 4 was in mm.....so actually 0.0015

Author:  robertob [ Mon Jul 08, 2013 10:55 am ]
Post subject: 

See if you can switch around the non-thrust shells and get a different number.

Do you have a ball-end micrometer (or a ball bearing of known diameter and a piece of vacuum hose)? Measure all the shell thicknesses, then measure the journals and the main bearing bores. Swap parts around to get the most even spread of clearances.

I personally would be fine with those numbers if it is a used (not reground) crank.

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