More piston info required

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#2058901 - 11/22/07 12:23 PM More piston info required
hondacivicnut hondacivicnut Poster Registered: 07/08/04 Posts: 221 Loc: England	This may be a stupid n00b question but I've just had an email from my piston supplier saying that I can only get 11.5:1 CP pistons for my Integra.I have looked on CP's online catalogue and it shows the lower compression ratios on the B18C1 columns.I was under the impression that B18C1 B18C6/5 pistons and rods were interchangable between blocks??? Am I correct on this?? I've googled and the bore/stroke/rod length seem the same.This is becoming a bit of a headache!! Can you guys back me up on this.I don't want to be ordering the wrong parts! I've just tried emailing CP and I keep getting my emails returned saying the email address doesn't exist.That's weird because I emailed them last week and got a reply.Not unless the problem is at their end??
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#2059477 - 11/22/07 06:04 PM Re: More piston info required [Re: hondacivicnut]
kyden kyden Post Master Supreme Registered: 12/20/99 Posts: 15410 Loc: Providence, RI	they are. they have the same rod length if i recall, only difference is in the dome. _________________________ <x> i had a weird dream <x> where i lived in an apartment complex <x> walked down the street, and kyden and a couple other dudes were living in an apartment and ran outside looking for the maintenance people <x> and something about taking a shit in a sealed toilet
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#2060864 - 11/23/07 09:25 AM Re: More piston info required [Re: kyden]
hondacivicnut hondacivicnut Poster Registered: 07/08/04 Posts: 221 Loc: England	Well thats what I thought.I'm sure you can interchange pistons between the two
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#2065043 - 11/25/07 12:49 AM Re: More piston info required [Re: hondacivicnut]
SiAdam SiAdam Post Master Supreme Registered: 07/22/01 Posts: 19307 Loc: USA	Originally Posted By: hondacivicnut Well thats what I thought.I'm sure you can interchange pistons between the two Yea, anything from the c1 will work on the c5. Same bore/stroke. _________________________ 05 Berlina Black S2000 700whp / 500wtq Built, not bought.
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#2143284 - 12/18/07 03:16 PM Re: More piston info required [Re: SiAdam]
AMS AMS Jr Member Registered: 11/27/04 Posts: 507 Loc: MA	But the P72 chamber has less volume, resulting in higher compression in a C1(P72 head) than will result in a C5 (PR3 head). _________________________ PIC Performance suspension products Northeast distributor Tune with Crome! MKTuned offered exclusively through DentSport Garage
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#2143561 - 12/18/07 05:03 PM Re: More piston info required [Re: AMS]
SamuraiSam SamuraiSam Post Master Sr Registered: 07/29/02 Posts: 8828 Loc: Bellingham, WA	Bingo. If you want to make your life easier you can shop for larger-bore B16A pistons, or you can use an online compression calculator to find the actual static compression ratio of a C1 piston in a C5: http://www.c-speedracing.com/howto/compcalc/compcalc.php _________________________ Working and living the dream in post-prohibition Washington State
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#2149762 - 12/20/07 02:30 PM Re: More piston info required [Re: SamuraiSam]
hondacivicnut hondacivicnut Poster Registered: 07/08/04 Posts: 221 Loc: England	I have already kinda resolved this with my piston supplier now.I'm going with the 9.8:1 pistons for my Integra.I don't know the piston dome displacement for the CP pistons I'm getting otherwise I could work out the exact compression ratio for my engine.I tried emailing CP but kept getting my emails returned.Maybe it is a problem with their end
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