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Top 2GNT Technical Turbo/Nitrous Tech topic #67373
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Subject: "cons of rebuild" Previous topic | Next topic
SteveMar-21-04 11:36 AM
Member since Sep 15th 2003
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#67373, "cons of rebuild"




          

What are the con's of rebuilding with just standerd bore pistons n rods and not boring out...

Steve-o
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Originally posted by FlyinEsi
I guess I'll just have to live with a 500+ hp AWD 4-banger. emoji

  
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Replies to this topic
RE: cons of rebuild, eclipse_99rs, Mar-21-04 02:07 PM, #1
RE: cons of rebuild, jsupetran, Mar-21-04 02:29 PM, #2
      RE: cons of rebuild, Steve, Mar-21-04 02:41 PM, #3
      RE: cons of rebuild, eclipse_99rs, Mar-21-04 02:44 PM, #4
           RE: cons of rebuild, grain, Mar-22-04 12:12 AM, #5
                RE: cons of rebuild, Global Ruler Of All ThingsDarkOne, Mar-22-04 03:22 AM, #6
                     RE: cons of rebuild, techboy, Mar-22-04 07:06 AM, #7
                          RE: cons of rebuild, HadesOmega, Mar-25-04 08:25 PM, #8

eclipse_99rsMar-21-04 02:07 PM
Member since Apr 11th 2002
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#67387, "RE: cons of rebuild"
In response to Reply # 0

          

MMMMM none well maybe down time but you get that with any rebuild.



myspace.com/coastiecobb

  
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jsupetranMar-21-04 02:29 PM
Member since May 04th 2002
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#67390, "RE: cons of rebuild"
In response to Reply # 1
 Mar-21-04 02:31 PM by jsupetran



          

Originally posted by eclipse_99rs
MMMMM none well maybe down time but you get that with any rebuild.


Ummmm how bout no.

You want cylindered bored because you want the most level, perfect cylinder shaped. A block, used over time develops imperfections, and you over bore it, to get rid of those imperfections.

Also, imperfect cylinders, I THINK, results in low compression and blow-by.

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SteveMar-21-04 02:41 PM
Member since Sep 15th 2003
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#67391, "RE: cons of rebuild"
In response to Reply # 2



          

ah thats what I needed to know..what would the imperfections of time cause...and blowby is the answer ....any other con's besides blowby

Steve-o
Top secret.

Originally posted by FlyinEsi
I guess I'll just have to live with a 500+ hp AWD 4-banger. emoji

  
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eclipse_99rsMar-21-04 02:44 PM
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#67392, "RE: cons of rebuild"
In response to Reply # 2
 Mar-21-04 02:54 PM by eclipse_99rs

          

ehhhhh never mind I was thinking of honing only. You also need to hone it because boring will leave inperfections. emoji

After a while the cylinder will start looking more like an oval than a circle.



myspace.com/coastiecobb

  
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grainMar-22-04 12:12 AM
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#67414, "RE: cons of rebuild"
In response to Reply # 4

          

Originally posted by eclipse_99rs
After a while the cylinder will start looking more like an oval than a circle.




huh? like said above. you want to bore it. make it perfect. also will set the piston rings better.

  
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Global Ruler Of All ThingsDarkOneMar-22-04 03:22 AM
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#67423, "RE: cons of rebuild"
In response to Reply # 5



          

It also allows you to properly size the bore for the piston, which you can't do with a worn in bore and a standard bore piston.

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techboyMar-22-04 07:06 AM
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#67434, "RE: cons of rebuild"
In response to Reply # 6

          

If your going to the trouble of pullling the engine and all that work you might as well have a standard over-bore done. You'll be happier in the long run, and much less concerned about blow-by.


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HadesOmegaMar-25-04 08:25 PM
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#67664, "RE: cons of rebuild"
In response to Reply # 7

          

yeh if possible try to get overbored pistons. You never know how messed up the cylinder walls were. Because I didin't do it my car sounds like a diesal all the time now. Then again my cylinder walls were never worn out, i just needed to have the head rebuilt.

But also if you really don't want to go overbore. i suggest buying the pistons after you've taken and inspected the block out. That way you can tell for sure.


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