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82mm Over bor worth it??

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Old Jul 29, 2002 | 09:22 PM
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Default 82mm Over bore worth it??

The difference between the b16a and b18c motors is like night and day. So would the extra c.c.'s in a b18c over bored to 82mm with some 11.3 : 1 endyn pistions (for example) make as much of a difference over the same compression pistions with the stock bore.

Also would it number the days of my engine. If i did so with out resleeving the block as long as i keep the rev limiter at 8500k???

One more point... NOSsss and forced induction are not in the plans. Not that they are bad things. Just not my bag baby.


[Modified by nosepkr, 3:22 PM 7/30/2002]
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Old Jul 30, 2002 | 05:29 AM
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Default Re: 82mm Over bore worth it?? (nosepkr)

^^^ for the fellow Japan Guy..
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Old Jul 30, 2002 | 05:45 AM
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Default Re: 82mm Over bore worth it?? (nosepkr)

It's probably only $100 more on top of what you would be spending on same size pistons for the over bore. With the great octane over there and only 11.3:1 why stop there ? 84mm would still be pretty safe, as long as your dumping the right fuel in.

steve
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Old Jul 30, 2002 | 09:31 AM
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Default Re: 82mm Over bore worth it?? (salt)

It's probably only $100 more on top of what you would be spending on same size pistons for the over bore. With the great octane over there and only 11.3:1 why stop there ? 84mm would still be pretty safe, as long as your dumping the right fuel in.

steve
I think that he's talking about the Stock Sleeve being able to handle the 82mm bore.. ?? I might be mistaken..
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Old Jul 30, 2002 | 11:41 AM
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Default Re: 82mm Over bore worth it?? (JDM_DOHC_SiR)

from what I have been told you would be
dnagerously close to breaking a sleeve with
11.5:1+CR and 82mm. maybe a closed
deck with coolant passages would help,
but heck if you are going to go that far...
81 - 85+ is possible on say a GEN2 JG
block treatment for $750 exchanged with
iron sleeves and an aluminum block guard
pressed into the block and decked .0010"
they way this block is dyno proven to
850 dyno whp using larger bores and FI.
and yes folks the BG has coolant passages
lined up with the head gasket.
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Old Jul 30, 2002 | 02:00 PM
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Default Re: 82mm Over bore worth it?? (MikeSarr_GSR)

Here´s my block with 82.mm bore, Endyn pistons 11.5 CR.
I had to deck the head and block just to clean the surface.




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Old Jul 30, 2002 | 02:05 PM
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Default Re: 82mm Over bore worth it?? (MikeSarr_GSR)

from what I have been told you would be
dnagerously close to breaking a sleeve with
11.5:1+CR and 82mm.
You were told wrong.
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Old Jul 30, 2002 | 06:27 PM
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Default Re: 82mm Over bore worth it?? (pinota)

Looks good... Thats what im planning.
Im going to bringing this engine back to California when my tour here is over. Thats why im not going for the full set up cuz the pump gas sucks in cali +smog .
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Old Jul 30, 2002 | 07:20 PM
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Default Re: 82mm Over bore worth it?? (nosepkr)

it looks like there are two layers to your sleeves. my B18C1
sleeves dont look like that. please explain... very clean looking
setup by the way.
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Old Jul 31, 2002 | 09:41 AM
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Default Re: 82mm Over bore worth it?? (MikeSarr_GSR)

I would think that it is okay. My friends CRVTEC is bored .50mm over and he's running 12.0:1 on stock sleeves.
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Old Aug 5, 2002 | 02:13 PM
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Default Re: 82mm Over bore worth it?? (JDMspecEG6)

B20's have a totally different Sleeve in them..

I'm very interested in this thread i just got the news today that i had to have my block bored to .75mm to get rid of a bad scare.. So much for the .25 overbore JDM ITR Pistons ... Is there anyone out there that makes a .75 ( i know i could get custom) ??? I would rather not bore it anymore unless i had to. Has anyone out there put 100K miles on a engine with an 82MM Bore ?? the more info the better guys i don't want to put this Engine back together and have a sleeve split in like 30K .. Thanks..
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Old Aug 5, 2002 | 09:07 PM
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Default Re: 82mm Over bore worth it?? (webhitch)

bumpy bump... someones got to know..
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Old Aug 7, 2002 | 10:32 PM
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Default Re: 82mm Over bore worth it?? (webhitch)

well im getting my gsr sleeved and bored out to 86 mm so i sure hope that its worth it. if anyone else is running this setup please let me know how it does on the track. Its not a daily driver so Im not too concerned about it going for 200k miles or anything. Plus i dont wanna have to pay for 118 octane fuel whenever I drive to school.
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Old Aug 8, 2002 | 04:00 AM
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Default Re: 82mm Over bore worth it?? (highbrid)

I still want to know if anyone has some high milege on an B18c with 82mm bore on stock sleeves with at least 11-1 CR... please help me...
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Old Aug 8, 2002 | 09:14 AM
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Default Re: 82mm Over bore worth it?? (webhitch)

hello,

I got my car this week and it´s
I got so far 750 miles on it, still break in the engine.

I got it 55 psi fuel and 13º timing at idle and it´s ok.
I´ll give details has soon has i get my car totaly break in and well tuned.

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Old Aug 9, 2002 | 11:04 AM
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Default Re: 82mm Over bore worth it?? (pinota)

So far my ITR is
It´s very stong.
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Old Aug 9, 2002 | 11:07 AM
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Default Re: 82mm Over bore worth it?? (MikeSarr_GSR)

it looks like there are two layers to your sleeves. my B18C1
sleeves dont look like that. please explain... very clean looking
setup by the way.
Your block is the same. you have the cast iron sleeve inside of the aluminum water jacket.
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Old Aug 9, 2002 | 11:41 AM
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Default Re: 82mm Over bore worth it?? (C5_ALLMOTOR)

So how far do you think you can bore on Stock Sleeves ???
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Old Aug 9, 2002 | 11:41 AM
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Default Re: 82mm Over bore worth it?? (webhitch)

i wouldnt go past 82
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Old Aug 14, 2002 | 09:25 PM
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Default Re: 82mm Over bore worth it?? (sgT)

Bought a new ITR shortblock for my TEG...
starting over my C1 is done!
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Old Aug 15, 2002 | 04:10 AM
  #21  
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Default Re: 82mm Over bore worth it?? (MikeSarr_GSR)

What happen to your C1 ???
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Old Aug 15, 2002 | 04:50 PM
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Default Re: 82mm Over bore worth it?? (webhitch)

Just an update on my rebuilt, already have 1300 miles on it, i´m starting to pull it a litlle bit hard and it´s
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Old Aug 15, 2002 | 05:11 PM
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Default Re: 82mm Over bore worth it?? (pinota)

this thread=
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Old Aug 16, 2002 | 03:05 AM
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Default Re: 82mm Over bore worth it?? (Halo)

^^^ once more for the 82mm guy
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Old Aug 16, 2002 | 11:01 AM
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Default Re: 82mm Over bore worth it?? (JDM_DOHC_SiR)

^^^ once more for the 82mm guy
What do you mean buy this ? Sorry translation problems.
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