mikepasini

i know the jdm one has like 168hp and 116ft/lb torque, but the redlines look the same and it is an older engine... whats different that is putting out those numbers?

what about performance wise, is the jdm one going to outperform the us one at all or by much?

can they both be chipped the same?

SiR_ME

iTrader: (4)

Good question i wanna know to

dennis278

i'm pretty sure that the jdm block has higher compression pistons plus different maps in the ecu and maybe the ignition timing is advanced.

egsleepercivic

the jdm B16 has P30 pistons which raises the compression to 10.4:1 versues the SI b16 which has Pr3 piston and a compression ratio of 10.2:1. The mapping on the computers is different due to the fact that they get better gaS in Japan . Also the Jdm B16 is rumored to have slightly more aggressive cams . hope this helps. One more thing the SI is OBD 2 and the JDM B16 is available in either OBD 1 or 2.

good luck

kpop

does anyone know for sure if the cams are different from the usdm. My block has some issues so im swapping mine out. my friend has a jdm b16 so im gonna be using his block with my stock b16a2 usdm head. my question is would my stock head yeild the same results as a jdm head? thanks in advance

aSlacker8

where to begin....
the whole thing really.
cams are different, valvesprings and retainers, ecu (includes vtec, redline, etc), pistons(ie. compression), to name a few. intake manifold and throttlebody maybe, i know the itr is but maybe not the ctr? oh the gears and final drive, and lsd vs non lsd equipped.


Modified by aSlacker8 at 10:21 PM 4/13/2006

SkoundrelUSA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by egsleepercivic &raquo;</TD></TR><TR><TD CLASS="quote">the jdm B16 has P30 pistons which raises the compression to 10.4:1 versues the SI b16 which has Pr3 piston and a compression ratio of 10.2:1. The mapping on the computers is different due to the fact that they get better gaS in Japan . Also the Jdm B16 is rumored to have slightly more aggressive cams . hope this helps. One more thing the SI is OBD 2 and the JDM B16 is available in either OBD 1 or 2.

good luck</TD></TR></TABLE>

same answer

And I highly doubt the valvesprings are different. My JDM B16 had some simple single springs. No dual valvesprings or anything. Not sure about cams either. I know by the naked eye I can't determine anything but my JDM B16 cams looked pretty weak

crxnj

What jdm b16a are we talking about ? there's a bunch of them..

SkoundrelUSA

Most likely the SIR-II since he mentioned the whole 168hsp thing. The 1st gen had like 158 or something I think