bpl0807

Hey my buddy and I both have 2000 ex 5 speeds, he and I came to the conclusion that we might as well go for a B18C Type R or B16B Type R swap but not sure what year motor, instead of the regular JDM GSR.

I just wanted to verify a few things about the wiring and such. I already know that the stock harnesses will work and that the JDM OBD2 B series engines do not have a Evap, CKF, or vtec pressure switch like the USDM D and B series, and if a JDM ecu is used, it wont be a problem not have those 3 things, if anyone could confirm that this is true, it would be very helpful.

I already know that since the ex trim comes stock with the D16y8 that the one vtec wire needed is already there.

The other question I had was about the IACV, I saw on multiple sites that people said you do have to change the plug on the 96-00 civics, then on other sites I saw that you don't need to, does anyone know which one?

My final question is about the only other possible wiring issue.. The IAB. What exactly must a do to make this work, using my stock EX harness?

And are there any other wiring requirements or sensors that I need to worry about?

Anyone who can confirm all of this or answer it. I thank you.

JuggerNaut-CTR

Yes you can run the jdm ecu w/out evap, ckf, or vps...wont be a problem. I dont know about IN emissions standards so you might have to run the evap canister. I live in a county w/ no emissions but wanted to run the evap canister anyways. For some odd reason my b16b idled better running the evap than with everything for it plugged off.

Everything I have seen shows the plugs are the same for iacv for dual and single cams.

For IAB, read this....... http://www.xenocron.com/install/OBD1-IABs.htm

Jdmbryan

get the b18c5 , b16b are weak .
just my .02 cents , 1.8>1.6

JuggerNaut-CTR

here's my .02 cents.....

1.8 bigger than 1.6...true....

b18c5 = not too great rod/stroke ratio....

b16b = near perfect rod/stroke ratio....

doood

iTrader: (1)

OP probably doesnt know what rod/stroke ratio is therefore it's irrelevant. for a street car, it's also irrelevant.

JuggerNaut-CTR

Not too concerned on the relevance nor I am directing it to the op...if someone wants to make a uneducated comment by saying its "weak" than I will reply with a educated awnser.

94EG8

ITR > GS-R > CTR Keep that in mind. CTR swaps are horribly overpriced for what they are.

Also, you can't use the JDM harness, it's almost a mirror image of a USDM harness.

kyden

rod/stroke ratio is unimportant here. it's also irrelevant when talking b series anyway.

doood

iTrader: (1)

that's about the only thing a b16b has going for it

EJ8_Man

Take a look at my build thread. I did what you are attempting and kept is smog legal in California. Go with the B18C-R. The rod stroke ratio is irrelevant if you're going all motor. Displacement is your friend.

bpl0807

Yeah, definitely going with the B18C-R, better priced, and better power. So it sounds like all I need to worry about is the IAB? And here in Indiana, emissions are not at all a problem, our cars never get checked.

EJ8_Man

No you have several things to worry about if you are using your EX harness. It's all in my build thread, there's a link in my signature.

CFK, extending wires, dizzy, bypassing the missing sensors it should all be in there.

bpl0807

It says on your build thread you converted yours from OBD2A to OBD2B, but it also says you used a USDM ecu, meaning that you had to use the evap, ckf, and vtec pressure switch didnt you? And since i'm using the JDM ecu with my USDM harnes all i will have to do is get a obd2b to obd2a adapter depending on which one the motor is, since i've read a few places that said that Jdm ECUs don't look for these 3 things. And yes I do know I'm going to have to go to rywire.com and get an 8 > 10 pin connector for the dizzy since all 99-00 SOHCs came with only a 8 pin connector.

EJ8_Man

EVAP yes, I bypassed the CFK and the pressure switch. Also the JDM ECU is tuned for Japanese gas, which we don't have. You should consider converting it to OBD1 and tuning it if you want to maximize the motor's potential

bpl0807

Ok thank you for the help. And I assume you used a usdm ecu because of emissions?

EJ8_Man

I use the USDM ECU for smog and my OBD1 ECU for daily driving

bpl0807

That's a smart idea. Yeah since here in IN emissions aren't strict at all, I'll just not even worry about CKF, Evap, and the vtec pressure switch, and make things simple and run the jdm ecu that comes with the motor. Nice build btw.

HondaPartsHero

IAB is only relevant if you go with the B18C GSR engine

bpl0807

Oh. So a jdm B18C Type R wouldn't have any problems whatsoever using a stock 96-00 ex harness then? Except for the obvious of possibly having to extend a few wires, and possibly having to convert to obd2a from obd2b using an adapter depending on which year ecu I recieve.

EJ8_Man

And you need to wire up the Dizzy, and swap some pins at the ECU for the fuel pump. Oh... Also upgrade your EX fuel pump to an ITR fuel pump.

bpl0807

I thought this adapter would solve the Dizzy plug issue. http://www.rywire.com/catalog/obd2-8...pter-p-43.html

JuggerNaut-CTR

My apologies for irrelevance...was just correcting a ding-dong comment that had no relevance to the 1st post is all.

EJ8_Man

You can spend $35 for the adapter or do it yourself. I did it myself

bpl0807

I saw that diagram somewhere. But yeah, I'm probably going to attempt to do it myself. About the fuel pump situation, I know it's necessary to swap out the fuel pump or else high rpms will not go so well.. But if I use the jdm ecu that comes with it, do I still have to swap out some pins or wires?

EJ8_Man

Yes the civic fuel pump pin is in the wrong location for an integra ECU

http://www.ff-squad.com/technet/wiring.obd2a.htm

or

http://www.ff-squad.com/technet/wiring.obd2b.htm