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Old 02-02-2006, 12:10 PM
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sup guys well my crank in the original motor spun a rod bearing... well i found a guy to sell me his crank on honda-tech.. well i recieved it today and on a rod part of it there seems to be a really small scratch (fingernail barely catches it) and at the end of that crease there is a small nick ( the size of pencil dot) should i be worried? my other crank is all fugged up from the rod bearing being spun.. im gonna run ACL bearings and make sure all the clearences are in spec.. just wanted to be sure this little nick would be ok... he said it came out of a running motor

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Old 02-02-2006, 01:34 PM
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Default Re: crank question

well what do you think does it loook really bad? or just like a little imperfection? i wouldent really worry that much if you're running NA or low boost :1
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Old 02-02-2006, 04:02 PM
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i think it might be ok... its almost like the top coating of the journal chipped off... its like a little dimple...if i run my finger over it there isnt any sharp edges or anything... but if i run along w/ my fingernail it kinda catches...
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Old 02-02-2006, 04:33 PM
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i would but machine shops around here would say yes it needs it even if it doesnt.... and then i just bought my STD. sized ACL bearings and would have to buy oversized bearings... i mean has anyone else assembled a motor w/ a nick or anything wrong w/ the motor? the motor isnt going to be together long... im gonna tear it apart this winter again to put in forged rods/pistons.. just woundering if anyone has had any luck w/ something like this


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Old 02-02-2006, 05:06 PM
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Default Re: crank question

you could take a penny and rub it across the affected journal and if copper rubs off it needs to be polished or (turned depending on the location and severity)
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Old 02-02-2006, 05:15 PM
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i tried that and i dont know weither my penny's are just ------ stupid and dont have much copper on them or its not that bad.... i can just kinda feel the dimple when rubbin the penny on it...
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Old 02-02-2006, 05:27 PM
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if you are that worried about it go get it polished
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Old 02-02-2006, 07:29 PM
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post some nice pics of it
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Old 02-03-2006, 10:35 AM
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Default Re: crank question

Originally Posted by DA-Teg
i would but machine shops around here would say yes it needs it even if it doesnt.... and then i just bought my STD. sized ACL bearings and would have to buy oversized bearings... i mean has anyone else assembled a motor w/ a nick or anything wrong w/ the motor? the motor isnt going to be together long... im gonna tear it apart this winter again to put in forged rods/pistons.. just woundering if anyone has had any luck w/ something like this


thanks
Getting the crank turned and buying oversized bearings is still cheaper than spinning a bearing and ------- up the crank, block, rods, etc.
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