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Would you be concerned about this mark on the cylinder wall? Pics inside

Old 05-18-2007, 07:25 PM
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Default Would you be concerned about this mark on the cylinder wall? Pics inside






A few of the cylinders have them. I got a new shortblock today and noticed this. It will not wipe off, I can't feel it with my finger but my fingernail will catch on it a tiny little bit. Just wondering, thanks!
Old 05-18-2007, 07:37 PM
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looks like the ring ends might have had a little edge hanging out.. i wouldn't sweat it myself.. but to each their own
Old 05-18-2007, 09:49 PM
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Can you catch it with a finger nail???
Old 05-19-2007, 12:18 AM
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it'll be fine dude, if its a new shortblock its probably jsut from putting the stuff in and it scratched it some on the way in. if you cant even feel it with your finer then just dont worry about it.
Old 05-19-2007, 12:45 AM
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Originally Posted by Tainted
it'll be fine dude, if its a new shortblock its probably jsut from putting the stuff in and it scratched it some on the way in. if you cant even feel it with your finer then just dont worry about it.

My fingernail catches on it... if it's from a ring what will it do at 6500 rpm?
Old 05-19-2007, 02:53 AM
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It will groove into the bore, especially at high temps when everything expands. A new block should nave *NO* scratches apart from honing striations.
Old 05-19-2007, 06:12 AM
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negative. a ring cut into the wall. id fix it while its apart. finish hone and re-ring or deburr.
Old 05-19-2007, 06:58 AM
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Originally Posted by 67RSCamaroVette
negative. a ring cut into the wall. id fix it while its apart. finish hone and re-ring or deburr.
Agree! if you can catch it with your finger nail... it is only going to get worse...
Old 05-19-2007, 10:48 AM
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That should not be there on a new shortblock. As mentioned most likely from a ring burr catching the wall of the bore during install. If you can catch it with your fingernail then I would have it honed again. I know the shortblock has to come back apart and it will cost more $$$, but it's well worth it to do it right. Assembling without fixing the gouge will lead to that cylinder having increased leakdown loss early on in life.


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