ok guys, I wanna keep my b18c1 head and block, my mods so far are, skunk2 manifold, skunk2 stage 1 cams, profab header, 2.5" exhaust setup, chipped p28. I will be adding ITR valve springs but dont know what pistons to go with. I still wanna run 91 octane.

shooting for over 200hp to the wheels.

 

USDM ITR...
...that should work fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nub.96ek &raquo;</TD></TR><TR><TD CLASS="quote">USDM ITR...
...that should work fine.</TD></TR></TABLE>

thanks, what compression am I looking at?, also that would be the AO73 right?

 

I would go with a standard ctr piston with a thinner headgasket(yields more compression) and arp headbolts. Purchase after market sprockets if you havent already for tuning capabalities. With your chipped p28, I would go ahead and throw in a hondata, you'll be very happy...I know I am...ask any hondata owner. If you have a few hundred bucks left over from change LSD wouldnt hurt....keep the power to the ground.....


http://www.c-speedracing.com/h...c.php

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CNSK &raquo;</TD></TR><TR><TD CLASS="quote">I would go with a standard ctr piston with a thinner headgasket(yields more compression) and arp headbolts. Purchase after market sprockets if you havent already for tuning capabalities. With your chipped p28, I would go ahead and throw in a hondata, you'll be very happy...I know I am...ask any hondata owner. If you have a few hundred bucks left over from change LSD wouldnt hurt....keep the power to the ground.....

http://www.c-speedracing.com/h...c.php</TD></TR></TABLE>
geez, CTR pistons in a GSR? now we're talking some mad compression! that's over 12:1! don't do that unless you have some HUGE cams. tuning for 93 octane will be long and tedious unless you're very good. for the cam sprockets. as for hondata, it's a very expensive solution to a rather inexpensive problem. all you really need is a dyno tune w/ crome or uberdata if you're a simpler kind of person. as for the LSD,
i can't tell you good it is! easily the best mod for your car. i'd take an LSD and stock engine over your engine + open diff any day! and besides, even if you're not into handling, LSD is still god for the strip. my friend's stock S13 240SX Super-HICAS Edition runs 14.6's constantly with just an intake. i can't get below 15 flat even with the SR b/c i have an open diff.

 

i have ctr pistons in my car i love them i would do it and with what u have done to ur car already u will be at 200whp easly

 

200WHP? wow.


yeah...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93civicB18C &raquo;</TD></TR><TR><TD CLASS="quote">ctr pistons are a direct fit in the jdm b18c block? would these be good combined with a JRSC</TD></TR></TABLE>

CTR pistons in a GSR block will yield close to 13:1 compression, not good for boost.

For a mild all motor setup consider some JDM ITR pistons (about 11.3:1 compression) or some PR3 pistons if you want to go a little higher than that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kendall &raquo;</TD></TR><TR><TD CLASS="quote">CTR pistons in a GSR block will yield close to 13:1 compression, not good for boost.

For a mild all motor setup consider some JDM ITR pistons (about 11.3:1 compression) or some PR3 pistons if you want to go a little higher than that.</TD></TR></TABLE>
yeah i got about 12.5:1 with a quick calculation, that's why i think it's a bad idea.

and to you:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xplanetearth420x &raquo;</TD></TR><TR><TD CLASS="quote">i have ctr pistons in my car i love them i would do it and with what u have done to ur car already u will be at 200whp easly</TD></TR></TABLE>
what the heck? i don't know what you did . . . maybe you bought pistons and they substituted ITR pistons for CTR pistons . . . or maybe you run 110 octane daily . . . or maybe you've got a great tuner who retarded the heck out of your ignition maps . . . or maybe you have HUGE cams and don't have to worry so much . . .

 

thanks, TTT

 

ctr

 

usdm itr pistons 10.6:1
jdm itr pistons. 11.3-11.5:1
still streetable with 91octane.

I would go with the jdm itr pistons myself. I am running a close set-up to you.

 

USDM ITR: 10.8 with P72 head. I run 'em, I like 'em.


http://technet.ff-squad.com/cr-calculator.htm

 

OEM PCT CTR, highest compression, best OEM for all-motor....

 

Okay, this whole piston debate thing has been getting out of hand, so many different people saying so many things.. I know that ctr pistons will yield a sky high compression in b16s and gsrs, but what about itr?

I know type r heads are basically built b16s, and that putting a gsr head on a b18c5 block will raise the compression, and if you put an itr head on a gsr you'll lose compression.. but i dont know how much. since the stock compression ratio of a usdm itr is about 10.6:1, and putting those pistons in a gsr will make 10.8:1, theres only a .2 difference between the heads? I would've thought it would be more than that, but im definately not contradicting anybody here.

 

you are wrong on your whole theory, you got it all backwards fool

 

2 people have already posted c/r calculators. how do you not get it? go to the c/r calculators (either one is fine) and use it!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fergy016 &raquo;</TD></TR><TR><TD CLASS="quote">usdm itr pistons 10.6:1
jdm itr pistons. 11.3-11.5:1
still streetable with 91octane.

I would go with the jdm itr pistons myself. I am running a close set-up to you.</TD></TR></TABLE>


what pistons, are you using? JDM ITR looks lovely.

correct me if Im wrong

A0-p73 = usdm itr
00-p73 = jdm itr

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by stockdc2 &raquo;</TD></TR><TR><TD CLASS="quote">what pistons, are you using? JDM ITR looks lovely.

correct me if Im wrong

A0-p73 = usdm itr
00-p73 = jdm itr</TD></TR></TABLE>
you are not wrong, and i agree, JDM ITR looks nice as do PR3's (US B16A). the ITR pistons however have the lubricant on the skirts. i forget what it's made of but i would swear it was something about teflon. P30's are a bit much i think, yielding about 11.6:1 in a GSR.

 

Looks like I'll be going o/s jdm itr when I finally have the money to pay someone to rebuild my engine. Can you run the stock gsr rods w/o any problems?

 

I'd say the question is how close do you want your engine to blow up mode? I know tons of people use CTR or P30 pistons and have no problems, but the truth is with such a high CR and no tuning, you could very well blow something up, which is cool when it's not your engine.... If you do use them, maybe switch to a PR3 head.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM_sedan &raquo;</TD></TR><TR><TD CLASS="quote">you are wrong on your whole theory, you got it all backwards fool</TD></TR></TABLE>

Uh, no, he's got it right.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95lstegman &raquo;</TD></TR><TR><TD CLASS="quote">
...the ITR pistons however have the lubricant on the skirts. i forget what it's made of but i would swear it was something about teflon....</TD></TR></TABLE>

I believe the piston side skirt coat on Type R pistons are molybdenom

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kchungb17a &raquo;</TD></TR><TR><TD CLASS="quote">I believe the piston side skirt coat on Type R pistons are molybdenom</TD></TR></TABLE>
yeah i don't know what it's made of. i'm sure it's not Mo but it might be some Mo compound. i just thought teflon made sense or something and it's black and takes high heat.