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Generation III Internal Engine
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Old 08-10-2004, 01:07 PM   #1
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Default Cylinder Wall scratch

How much honing would it take to get out a cylinder wall scratch, just deep enough to hang a fingernail on? I have a 99 block and rotating assembly, but two cylinder walls have scratches that are straight up and down the wall, the length of the piston travel. I'm hoping to have just a small amount of honing done, and use the .25mm oversized rings that GM put out. Is this possible, or am I looking at new pistons too?
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Old 08-11-2004, 01:28 AM   #2
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you wont know until the machine shop tells you how much they had to hone it to fix it....
very possible you will need a custom piston set if you can hang a nail on the scratches...
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Old 08-11-2004, 09:13 AM   #3
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As soundengineer, just said... I'd get it measured first... It may work out fine.
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Old 08-11-2004, 09:22 AM   #4
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I have to agree. Anything big enough to hang a nail, or be aware of to the touch of most folks is bad...

Dang Peter, what are you still doing up. Isn't it past your bedtime ...
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Old 08-11-2004, 09:38 AM   #5
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11:30pm here... Just winding down after a big day at the office. Sam's office...

The little drive home an hour ago, with 670rwhp has kinda got my blood pumpin.
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Old 08-11-2004, 03:35 PM   #6
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Thanks for the replys, I'm really hoping I can sqeak by with the stock pistons. Don't have the dough to replace them right now. Guess I'll just have to wait and see.
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Old 08-11-2004, 04:18 PM   #7
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Don't worry about it. Unless your doing a big rebuild, don't sweat it. Run a hone and call it a day.
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Old 08-12-2004, 08:57 AM   #8
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Quote:
Originally Posted by LASTLS1
Don't worry about it. Unless your doing a big rebuild, don't sweat it. Run a hone and call it a day.
OK, yeah just doing a stock rebuild with a small cam. Just got my hands on the parts cheap and figured I'd build a standby motor in case I screw mine up.
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Old 08-12-2004, 08:57 AM
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