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piston bore?

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Old 04-07-2008, 09:33 AM
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piston bore?
can anyone tell me what the stock bore on the z28 is for the 1993
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Old 04-07-2008, 09:35 AM
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4.0" bore x 3.48" stroke
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Old 04-07-2008, 09:35 AM
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4 = bore
3.48 = stroke
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Old 04-07-2008, 11:47 AM
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honing
now im not sure this question fits this forum, but is honeing the cylinders just cleaning them, them boreing them is when of course you increase the cylinder size?
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Old 04-07-2008, 11:59 AM
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Cylinders are bored and then honed to final size.
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Old 04-08-2008, 12:04 AM
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so if you are honing the rust out of your cylinders then your cleaning them without the bore or with it???
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Old 04-08-2008, 12:08 AM
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For a cylinder cleanup you would just hone the cylinder, if the motor needs to be rebuilt and you are going .030 over you would bore, then hone.
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Old 04-08-2008, 12:13 AM
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ok thats what i thought!
but i just had to make sure...
thanks
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Old 04-08-2008, 04:42 AM
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Yes, but honing does remove some metal and thus will slightly increase the bore.

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Old 04-08-2008, 03:19 PM
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so should i buy forged or regular stock pistons???
if i buy the regular sized ones, will this screw up my compression or anything?
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Old 04-08-2008, 06:56 PM
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Originally Posted by Austin_78@msn.com
so should i buy forged or regular stock pistons???
if i buy the regular sized ones, will this screw up my compression or anything?
are you boring or honing? if you have rust, I would think you will need to bore it out some - if you aren't going to go to radical then stock-type pistons would be fine - check out this site for more info:

http://kb-silvolite.com/article.php?action=read&A_id=5
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Old 04-09-2008, 12:04 AM
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i am just honing surface rust out and wated to know if the stock pistons if i am buying will fit and not mess anything up.
Last edited by Austin_78@msn.com; 04-09-2008 at 12:10 AM.
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Old 04-09-2008, 05:07 AM
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They will probably be ok. Only way to tell for sure is to take measurements.

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Old 04-09-2008, 08:54 AM
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ok then
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