typegsr

well i have a 92 eg and im trying to swap in an itr motor. i have the axles, ecu, tranny everything. but what do i do about the wiring harness? i mean i cant plug the 92 one into the 98 harness. anyone can help out, please reply.

B_CRUZ!

actually you can. look up B18C5-EH2. He did it.

acydphryck

send pm to B18C5-EH2 (Tom)...he's a moderator in this board...and he has a sweet VSM hatch with that motor setup in it...don't know what kind of harness he used though...hope this helps out. good luck with the project...

Slopoke

You should do a search. There is tons of info on this swap.

The '98 itr engine harness will plug straight into your '92 civic intermediate harness.
Since your '92 civic is prewired for vtec, you can make it all a plug and play affair by using a rechipped p28 ecu.

Just drop the engine in, plug in the itr harness, and plug in the p28 ecu. Then your done.

JV

B18C5-EH2

Actually that is bullshit.

Whe using a 99-00 Civic Si B16A you cannot keep the Si engine harness.

...but you CAN keep the ITR harness - it plugs right up!

IM me for details.

JV

I just posted it as a reference to what slopoke was saying.

But, since we are on the topic. Would you be able to use the motor harness from a Delsol Vtec on the 99-00 B16 to make it plug and play?

Slopoke

As long as its an obd2 harness (Im not sure if there was a obd2 del sol vtec).

You could also use a obd2 gsr or type R harness on the '99-'00 b16.


[Modified by Slopoke, 4:10 PM 2/2/2003]

SpoolinSol

96-97 DOHC Vtec Del Sol's were OBD II and had the B16a2.

tek_civic

nice illustrations, pretty helpful even if it is somewhat innacurate.

Slopoke

Sweet.
Good info. I wasnt sure what years they were available.

Plan B

whoot!

Yeah, lets see some pics of this vtec hatch yO!

Word up on the 99-00 si harness, it's the mad-gay under-the-battery-through-the-firewall type.

B18C5-EH2

See this is really funny because I happen to own BOTH swaps in question and both are in 1992 hatches.

The 1992 Si that I have has a 99 B16A2 from a 1999 Civic Si in it.

For the harness, simply use the stock 1992 Civic harness. You have to do some MINOR rewiring on the 99 Si distributor, but it's super easy once you compare the plug types on the 1992 harness and the 99-00 distributor.

Then just get a re-chipped P28 ECU and you're set. Not s single VTEC wire needs to be ran, nor do you wire up a knocj sensor because the P28 ECU doesn't look for one.

I mean you can try to find a 1996-2001 OBD2 Integra harness, or the elusive 1996-1997 Del Sol VTEC one, but why do that when your stock Civic one can be used with minor mods?

B18C5-EH2

Ahh i found the wiring inf that I had posted in a pictures thread of mine for my 1992 CX w/B18C5 a few months back.

Begin paste:

B18C5 engine wiring into a 1992-1995 Civic:

IMO the USDM ITR swap is easier to swap in. I've done this swap 3 times already and it is 100% easy especially if you run a re-chipped P28 and even more so if you have a 1992 Civic or any 1992-1995 Si, VX, or EX with VTEC wires.

Here's what you'd need too do if you have a USDM ITR swap:

KEEP the ITR engine harness. Regardless of what others say the plugs all plug right in. This way you get to keep the newer ITR distributor and injectors, and there is no need to rewire anything. Again this is from experience, not hearsay.

You'll have a few extra plugs left over on the ITR harness because the ITR has a few extras that our Civics don't have, like ABS, etc. You vcan just hide the extra plugs.

Now there's a few different ways to get an ECU to work, and I'll list them from easiest to hardest:

1. Re-chipped P28. This will simply plug in. No need to wire up for a knock sensor because the P28 doesn't read for one. Better fuel, timing, VTEC x-over, and rev limiter = more power. OBD1 so no need at all to run any sort of extra sensors.

2. Kenji OBD2 jumper harness and JDM P73 ECU. I ran this on my motor for a while before the kenji ECU. You'll have to wire up a knock sensor wire and that's about it. Drawbacks are that this ECU has a 113-115 speed limiter and it doesn't make the power that the kenji-spec P28 does. ThisECU has OBD2 type plugs but IT RUNS AN OBD1 PROGRAM AND IT IS ONLY OBD2 IN PLUGS!!! I ran this ECU with no extra o2 sensor, no crank fluctuation bullshit, etc.

3. Jumper harness with USDM P73 ECU. Why? I wouldn't do this unless I was in Cali and it was necessary for smog bullshit. You'd have to wire up all the extra OBD2 bullshit and the ECU sucks compared to a re-chipped P28.

So that's for the USDM motors, but what about the JDM ITR swaps?

As Apexi-ITR has said the JDM harness can be used. It requires some stretching but it will work. If you must get the factory look then get any OBD2 type engine harness from any USDM B18C1 or B18C5 and then it will plug right in just like I said the USDM swap does.

As far as ECU stuff goes, really a P28 is the better choice again but you will need to add a VTEC oil pressure switch onto the JDM ITR motor because it doesn't have one and the P28 looks for one. Just pull an oil pressure switch from another VTEC motor - didn't you use a SOHC one Apexi-ITR?

Or you can run the jumper harness and O.E JDM P73 ECU. This will save you from having to add the oil pressure switch, but you'll have to add a knock sensor and this ECU still has the shitty speed limiter.

USDM ECU? But why?

End paste.

See I like to post useful tech along with my pics, and in this case it just might really help some folks out.

I knew where I could find that tech. I also posted all of the brakes tech in that same thread too.

Any more questions?

Gr8Wyt3

[QUOTE]

3. Jumper harness with USDM P73 ECU. Why? I wouldn't do this unless I was in Cali and it was necessary for smog bullshit. You'd have to wire up all the extra OBD2 bullshit and the ECU sucks compared to a re-chipped P28.

QUOTE]


whats a jumper harness???

Slopoke

Its a little harness that lets you plug an obd2 ecu into an obd1 car.

B18C5-EH2

...Or an OBD1 ECU into an OBD2 car.

jg

Good stuff.
It's only the '92 (5th gen. civics) that ALL come with vtec prewired, right? Otherwise it's only the Si and the VX from '93-'95 that have vtec pre-wired.
btw: I have a jumper that lets you plug in a ITR ecu into a '92-'95 civic, if anyone needs it.

B18C5-EH2

Yes.

All [b]1992[/v] civics, regardless of trim level, are already pre-wired for VTEC. My 1992 CX required no wiring for my B18C5 swap.

The 1993-1995 VX, EX,and Si are the only ones with the VTEC wires ready. the 1993-1995 CX, DX, and LX models will require the VTEC wires to be added - not much additional work really though.

I have *heard* that a few 1993 civics made in Canada may still not require any additional VTEC wiring, but again I cannot say for sure.

Sorry I should have clarified this even though I only mentioned the 1992 in my other post.