I got a 92 civic si hatch and i want to swap to a b18c5 or b18c but i donno which one would do me more good. im leaning toward the c5 but then i wanna get some opinions on a 98 vs 96 spec. what are some of the pros and cons? Im planning on turbocharging it. anyone... help. It will be very much appreciated

Doug

 

stock c5, if you gonna do any upgrade 18c, lsv, etc.

 

B18C5+turbo=kaboom

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EkJavi &raquo;</TD></TR><TR><TD CLASS="quote">B18C5+turbo=kaboom</TD></TR></TABLE>

VERY untrue

Stock ITR motors are just as good as a GSR, they have a better flowing head stock for stock and come with better cams. Plus the trans should have LSD.

A friend made over 400 on a stock C5 with a shitty SSAC manifold and a good tune on race gas

 

well are you buiding or what the blocks are the same, if you keep them stock the itr has higher compression so it's more tuning to run boost on it, BUUUTT they do run good when they last, you don't wanna boost high compression though.
IF you build your block then it doesn't matter cuz they are no different with the pistons out of em. The type r head will be better the cams, MILD porting(hardly any) and valvetrain. If i were you i would just get whatever one you get a better price on cuz, i would replace everything in em anyways.
but if your keepin it stock the the gsr will run fine, i have a gsr hatch boosted sleeved all that **** and it's nasty
boosting stock though i would say gsr just cuz the compression is like a point lower, but whatever floats ur boat right?

 

a higher compression is fine as long as you have a competent tuner that knows what he is doing. All the higher compression will do is make more power at a lower psi level, plus you will get a little bit better spool.... probably not even that noticeable though.

Who are you going to have tune you car?

 

i think im gonna have Top Setup tune my car in Palatine IL.

 

my old set up was a c5 with 7 psi of boost for 2 years no kabo0m. I loved every minute of it and I would do it all over again if I had to choose.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SIXTY-1HATCH &raquo;</TD></TR><TR><TD CLASS="quote">the itr has higher compression so it's more tuning to run boost on it, BUUUTT they do run good when they last, you don't wanna boost high compression though.</TD></TR></TABLE>

Yeah, having higher compression magically means the tuner has to spend another hour working out the timing maps

 

either one will work fine...if the price for the C5 is significantly higher (which is generally is) then i would get the GSR because you're going to be able to make about the same power stock for stock regardless....

The offboost for the ITR is going to be a little stronger...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Schister66 &raquo;</TD></TR><TR><TD CLASS="quote">either one will work fine...if the price for the C5 is significantly higher (which is generally is) then i would get the GSR because you're going to be able to make about the same power stock for stock regardless....

The offboost for the ITR is going to be a little stronger...</TD></TR></TABLE>

Yes, I can't wait to test out the stock ITR's capability

 

here it is.. itr head + gsr block = lower compression + better flowing head and valvetrain!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostincoupe &raquo;</TD></TR><TR><TD CLASS="quote">

Yes, I can't wait to test out the stock ITR's capability </TD></TR></TABLE>

we should really do a comparison when we're done w/ our cars....like a dyno number comparison...its going to be interesting to see the results of our amazing cars...lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedEG6 &raquo;</TD></TR><TR><TD CLASS="quote">a higher compression is fine as long as you have a competent tuner that knows what he is doing. All the higher compression will do is make more power at a lower psi level, plus you will get a little bit better spool.... probably not even that noticeable though.

Who are you going to have tune you car?
</TD></TR></TABLE>

I don't care how good a tuner is or how good the tune on the car is. The stock ring-lands are fragile. They can't handle that much power for a long time. True...higher compression will make more power with less boost but your still limited to the weak ring-lands.

 

USDM B18C5 10.6:1 compression JDM B18C 10.6:1 JDM B18C5 11:1 USDM B18C1 10:1

 

hope this helps https://honda-tech.com/zerothread?id=1542870

 

scrap the idea of using a c5 and with the cash you will save, drop rods/pistons into the c1 and call it day.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HamiltonRex &raquo;</TD></TR><TR><TD CLASS="quote">scrap the idea of using a c5 and with the cash you will save, drop rods/pistons into the c1 and call it day.</TD></TR></TABLE>&gt;&gt;&gt;&gt;&gt;What he said!&lt;&lt;&lt;&lt;&lt;

 

ding ding ding you have a winner
well thats what i did gsr block, b16head, that right there lower your compression cuz the combustion chambers are diff size and 9:1 slugs in it with rods, im boosting 20psi and my **** loooveess it
it's roasts 4th gear too on street tires

 

I don't care what anyone says. I wouldn't turbo a B18C5 ; I just don't like the idea of the Compression being that high.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Leo` &raquo;</TD></TR><TR><TD CLASS="quote">I don't care what anyone says. I wouldn't turbo a B18C5 ; I just don't like the idea of the Compression being that high.</TD></TR></TABLE>

10.8:1 isnt very high. it's all in the tune.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by doood &raquo;</TD></TR><TR><TD CLASS="quote">

10.8:1 isnt very high. it's all in the tune.</TD></TR></TABLE>10.8:1 w/ just 8 or so PSI would give a wide RPM range w/ good bottom end power but, it is a bit harder to tune. Just make sure the tuner knows what the heck he's doing.

 

if your going boost get the cheaper motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HT Chaplain &raquo;</TD></TR><TR><TD CLASS="quote">if your going boost get the cheaper motor. </TD></TR></TABLE>

good point!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec.dc2 &raquo;</TD></TR><TR><TD CLASS="quote">here it is.. itr head + gsr block = lower compression + better flowing head and valvetrain!</TD></TR></TABLE>
or you could save a few hundred and just get a b16 head and itr cams. <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">

I don't care how good a tuner is or how good the tune on the car is. The stock ring-lands are fragile. They can't handle that much power for a long time. True...higher compression will make more power with less boost but your still limited to the weak ring-lands.</TD></TR></TABLE>
that much power?no one said how much power he'll be putting down, nor did the op. Anywhere within the 300whp range is reliable for a b series, as far a block strength goes. The stock ringlands are somewhat "fragile" when you compare them to the rods and sleeves. There was an article in some car mag where they boosted a BONE STOCK b16 to ~500hp, before a ringland broke. So yes, they are probably the weak point in the block, but at the same time they're not that weak

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted92 &raquo;</TD></TR><TR><TD CLASS="quote">

Yeah, having higher compression magically means the tuner has to spend another hour working out the timing maps </TD></TR></TABLE>
I wouldn't think the additional ~.5c/r would be an issue for any competent tuner. And as someone stated early, people boost k20's all day (11.5:1 c/r) and no one complains about the compression b/c it works fine.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HT Chaplain &raquo;</TD></TR><TR><TD CLASS="quote">if your going boost get the cheaper motor. </TD></TR></TABLE>
haha very true...ls/vtec say what?

To the op, when you say "b18c" are you talking about a jdm sir-g(gsr) or a jdm type r spec? I would go with the gsr. for the price difference you could piece together a decent turbo kit and have ~300whp reliably