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What pistons do i use?

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Old Feb 22, 2004 | 08:24 PM
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CrazyKoreanCrx's Avatar
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From: Chicago, IL
Default What pistons do i use?

Well I have a b16a2 short block with a gsr head that i'm building. I was goin to use the stock pr3 pistons that came with the b16a2 but i found out that one piston side where the rings go are crack and some pieces are missing. But i have a set of CTR standard pistons with out the wristpins. So what should i do go with Pr3 pistons or the CTR pistons.

If I go CTR pistons what are the measurement for the cylinder walls, also will I fry some valves b/c of the head.(Which the head is a Gsr) Would like to know before I start buying more stuff.


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Old Feb 22, 2004 | 09:04 PM
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Default Re: What pistons do i use? (CrazyKoreanCrx)

Look Korean! All stock pistons come with a 81mm bore, and an 81.25 oversize. Use either of them. Its not that hard to figure out. Oh but you may need to belt sand the rod ends because the wrist pin journals are to big.
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Old Feb 22, 2004 | 09:16 PM
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From: tallafizzy, FL state
Default Re: What pistons do i use? (HARTENG)

how do the cylinder walls look like?if they are scored or egg shaped, then you gonna have to go overbore pistons.
What kind of compression are you looking for?
with standart 81 mm
pr3's: 10.4
p30's:10.65
pct's:12.1
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Old Feb 22, 2004 | 09:35 PM
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Default Re: What pistons do i use? (mmuller)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mmuller &raquo;</TD></TR><TR><TD CLASS="quote">how do the cylinder walls look like?if they are scored or egg shaped, then you gonna have to go overbore pistons.
What kind of compression are you looking for?
with standart 81 mm
pr3's: 10.4
p30's:10.65
pct's:12.1</TD></TR></TABLE>

The wall needs to be hone and for the compression 10 or 11 doesn't matter right now. I just need to know what pistons to go and if i use ctr do i need to sand down the ends of the rods?Also the valve wont get fried will they?
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Old Feb 22, 2004 | 11:48 PM
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From: city of angels
Default Re: What pistons do i use? (CrazyKoreanCrx)

no they wont but u must do a dyno pull to know where your at witj your a/f ratio or boom,kling,clumble!!
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Old Feb 24, 2004 | 06:14 PM
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Default Re: What pistons do i use? (HARTENG)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HARTENG &raquo;</TD></TR><TR><TD CLASS="quote">no they wont but u must do a dyno pull to know where your at witj your a/f ratio or boom,kling,clumble!!</TD></TR></TABLE>

thanks
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