what loom do i need for engine conversion

[chocopie]

hi,

i'm wanting to put a b18c2 into my 99' civic ek gli hatchback, what engine loom do i need for it to work ?

and what ecu harness would i need to run the ecu, its a 1995 b18c2 which is obd1 ?

cheers,

[kutso]

wrong motor u need obd2 u can get a conversion harness or i can buy it off you :)

[stndrd]

Also depending on what state you live in, you may not be allowed to fit an engine that is older than the car to your vehicle

[FAITHLESS]

kutso you are wrong it can still be done. Just a little harder. You can use your own loom just fine, and it's the best way to go but you need to splice a few sensor connectors and wire in a few. Assuming that your B18C2 engine came with all the connectors, you need to splice fuel injectors, dizzy and alternator. You then need to wire in VTEC solenoid, VTPS, IAB, knock sensor, 02 sensor.
You also need to use a P72 OBD2 ECU.
However if possible go with an OBD2 engine, it will save you some trouble :D

[impossi13le]

If you live in nsw it's ok to put an older engine in, well it doesnt say anything about older engines in the rule book lol

to put the C2 in your ek you'll be best off sourcing an EK4 loom, most probably the easiest way to go about the electrics. Once you have that all you need to do is wire in the IAB (since b18c2 has a second butterfly) and use an 0bdII to 0bdI conversion harness, an you can use the 0bd1 b18c2 ecu :D

If you have any technical questions you should ask "ECU-MAN", the info i just shared with you came from him haha

[tekung89]

^ good info

[dorikin]

kutso you are wrong it can still be done. Just a little harder. You can use your own loom just fine, and it's the best way to go but you need to splice a few sensor connectors and wire in a few. Assuming that your B18C2 engine came with all the connectors, you need to splice fuel injectors, dizzy and alternator. You then need to wire in VTEC solenoid, VTPS, IAB, knock sensor, 02 sensor.
You also need to use a P72 OBD2 ECU.
However if possible go with an OBD2 engine, it will save you some trouble :D

It's possible, but a lot of re-wiring is required to be able to use the original D16Y4 loom. Other then the connectors and the extra wiring you mentioned, you would also need to re-wire the fuel injectors because D16Y4 doesn't have MPFI. Although it does have 4 injectors, they work in pairs in a Simplified Fuel Injection system. Look at the pinout here. (http://nzhondas.com/tech-help/95335-p72-ecu-nzdm-ek-p2k-ecu-help-needed.html) On top of that you can't just plug in an OBD2 ECU because the connectors on the D16Y4 loom are specific to the P2K ECU. So again, you would need OBD2 ECU connectors.

It's true you should have went with an OBD2 motor, would have made your life easier. But it's still do-able. Other option is to run an EK4 loom and convert the connectors as above or convert your motor to OBD2 accessories

See this thread too: http://www.ozhonda.com/forum/showthread.php?159606-need-help-b18c2-swap-please&

[dorikin]

If you live in nsw it's ok to put an older engine in, well it doesnt say anything about older engines in the rule book lol

to put the C2 in your ek you'll be best off sourcing an EK4 loom, most probably the easiest way to go about the electrics. Once you have that all you need to do is wire in the IAB (since b18c2 has a second butterfly) and use an 0bdII to 0bdI conversion harness, an you can use the 0bd1 b18c2 ecu :D

If you have any technical questions you should ask "ECU-MAN", the info i just shared with you came from him haha


You can't just plug in an EK4 loom to an OBD1 motor. EK4 is OBD2a and some of the connectors are different between OBD1 and OBD2.

[FAITHLESS]

It's possible, but a lot of re-wiring is required to be able to use the original D16Y4 loom. Other then the connectors and the extra wiring you mentioned, you would also need to re-wire the fuel injectors because D16Y4 doesn't have MPFI. Although it does have 4 injectors, they work in pairs in a Simplified Fuel Injection system. Look at the pinout here. (http://nzhondas.com/tech-help/95335-p72-ecu-nzdm-ek-p2k-ecu-help-needed.html) On top of that you can't just plug in an OBD2 ECU because the connectors on the D16Y4 loom are specific to the P2K ECU. So again, you would need OBD2 ECU connectors.

It's true you should have went with an OBD2 motor, would have made your life easier. But it's still do-able. Other option is to run an EK4 loom and convert the connectors as above or convert your motor to OBD2 accessories

See this thread too: http://www.ozhonda.com/forum/showthread.php?159606-need-help-b18c2-swap-please&
My day just got ALOT worse.

[po61ba2]

u need an obd2b wiring harness as being 1999 i believe its obd2b find one off an em1...need different injectors plugs and dizzy...

[sebtoombs]

As has been said, the easiest way is probably using an EK4 loom,but a couple of connectors will need to be changed, eg, the alternator connector, intake air temp, oxygen sensor. But it definitely can be done, the differences between the b18 loom and a b16a2 are not that great. I did the opposite for my swap.

[FAITHLESS]

Turns out the D16Y4 in the EK1 DOES have MPFI, the thread Dorikin linked was for an EK3 which has a D15B with DPFI. So you can use your harness or an EM1 harness but will need to wire in the aforementioned connections.
You will either need an OBD2B ECU or a conversion harness for whatever OBD ECU you are using. In my case, it's OBD2A.
And as mentioned before, splice said connectors.

[FAITHLESS]

D16Y4

Found in:
1998–2000 Civic 1.6 iES (Turkey)
1996–2000 Civic CXi,GL,GLi (New Zealand,Australia)
Displacement : 1,590 cc
Bore and Stroke : 75 mm × 90 mm (3.0 in × 3.5 in)
Compression : 9.4:1
Power : 120 hp (88.0 kW) at 6,400 rpm
Torque : 144 nm at 5,000 rpm
Redline : 6,800 rpm
Rev-limiter: 7,200 rpm
Fuel Control : OBD-2 MPFI
Head Code : P2A-2
ECU Code : P2K
Rod /Stroke Ratio : 1.52
Rod Length : 152 mm
Deck Height : 212

[dorikin]

I've tested an unmodified D16Y4 loom from an AUDM EK GLI (99). If you get your multimeter and test continuity between injector 1 and injector 4 you will find they are both linked together to Pin 1 (Red/Yellow) and Injector 2+3 to Pin 2 (Red/Blue). The colour scheme in the NZ pinout might be a bit off.

Which means if you use your D16Y4 loom in a B-series conversion without adding in additional injector wires your injectors will be working in pairs i.e. 2 outputs from ECU > 4 injectors

http://www.ozhonda.com/forum/showthread.php?17476-Ecu-discovery&p=240300&viewfull=1#post240300