MEANB18

Whats up, I am swapping a B18C5 swap into my '95 coupe. I have the p28 ecu chipped, and am planning on using the wiring from my original engine (d16Z6) Anyways, all plugs line up and everything, (except injector plugs and distributor plug, which have all been soldered from the old harness) but I have noticed some people say that the knock sensor from the old harness needs to be on the motor... is this true? Why would I need it with obd1 ecu?

TimoneX

The P28 doesn't utilize the sensor, so you don't need it. Isn't of much value anyway.

6pucker

im thinking about doing the same swap as you and was wondering what year your motor was? how are you going to wire up the distributor and the injectors? if you have any additional information on how to wire the motor up i would really appreciate it if you shared...thanks

TimoneX

You should check here:

http://tech.hybridgarage.com/

Good luck.

Kataku2K3

Are you using your SOHC D16Z harness or do you have the ITR??? The ITR is plug and play with the interior wiring harness of your coupe so there is really no need to modify anything.. From what you are saying it sounds like you are soldered the OBD distributor connector from your D16Z to your ITR so that you can use the SOHC harness, and the same for the injectors so that you could use OBD1 injectors... I really have no problem doing it either way but there are things that I like about the OBD2 harness, the injector connectors are nice and look cleaner... As for reworking the harness... I like doing that.. From the factory the Honda engine looms are not perfect. (most people don't get as particular about me but I like my wiring cleaner than stock same goes for me with motor building) I'm just weird and have to have all my **** perfect... Anyways that's the reason I would just modify the SOHC harness, just make sure you use high temp, weatherproof electrical tape.. I always use 3M because it seems to not peel up as easily just like the OE stuff... As for the P28, just as everyone has said it does not look for the KS so you won't even have to modify your interior wiring harness... The stock KS does nothing good for any even mildly built motor.... It works only for low rpm so if you detonate above ~5000 it's not going to pull your timing anyways.. If you are worried with detonation problems then I would look into a J&S Safegaurd, but you probably don't even need that unless you are scared and are running high compression (12.0:1+ on pump gas) You can tune all the way up to probably 13.0-13.5:1 on 92, so again I wouldn't be too worried... Good Luck

eg6ajk

you can replug the distributor, rewire the injectors or use your old ones (both flow the same)

P28 doesn't need a knock sensor as it was never designed to run one.

SupaFly_Honda

running the b18c5 with the obd2 harness and a chipped p28 without ks will it give me a check engine light?

eg6ajk

if everything is hooked up right. then you should have no problems.

MEANB18

My motor is a 2000. I wired the injectors by using the injectors off the obd2 harness. I cut them with a little extra slack just incase. I cut the obd1 sohc injector plugs and tossed them. Then I just soldered the wires on, but remember the colors of the wires on the plugs, they match for each injector (obd1-obd2). As far as the distributor, the obd1 plug has two seperate plugs, whereas the obd2 has only one. you'll have to look up in the honda manual what the extra wire is, I believe it is another ground or possibly just another wire that can be taped off. Hope that helps, email me if you have any other questions.

6pucker

if the b18c5 is jdm can i still use the jdm harness? will it plug up to the shock tower plugs in the engine bay? and you said all the other plugs on the harnesse will plub up except for the injector wires and the distributor plug? is there certain manuals you would suggest? your information has helped alot...thanks

MEANB18

JDM or not it should still work if I remember right. When you get to the injector wires, take the first injector on the passenger side from the old harness, and match the wires with the new plug wires... they are the exact same colors except for the third plug from the drivers side... and there is only one wire that is different, you should still know which is which. Very easy, just solder the new wires on the old! As far as a wiring book, I would suggest the Honda repair manual for both engines.

6pucker

so if i use the stock harness from the civic(92-95) every little plug except for the injector and distributor should plug up? you have any information on the distributor wiring? thanks again

Ministry

just a little FYI, there is no JDM b18c5. JDM ITR motors just say B18 on them. not that this makes a difference...


[Modified by dreamer, 11:52 PM 1/25/2003]

MaRkO

uhh you forgot the C JDM Integra Type R motors are labled "B18C"

Same as the JDM Sir-G!!

Ministry

yea you're right. thats what i get for trying to be a smartass

6pucker

any info on the distributor wiring? i really need this info.....

thanks

Kataku2K3

If you use your stock Civic harness you'll need to cut the plug off the OBD1 distributor and then solder them to the new OBD1 distributor... It's fairly straight foreward... You can do so by just matching up the colors of wires... If you need anything else lemme know.. Peace

StorminMatt

Another option is to use a pre-2000 JDM ITR P73 ECU. This ECU is basically just an OBDI ECU with OBDII plugs. With the exception of the knock sensor, no additional sensors need to be wired up. I will be using the P73 with my B18C5 swap since it is cheaper than reprogramming a 1992-1995 ECU (The P73 came with the motor but a chipped P28 would be something I have to buy. And I can rewire for free).

As for the distributer, all 1992+ distributers are electronically compatible with ANY 1992+ ECU.


[Modified by StorminMatt, 5:30 AM 1/29/2003]

6pucker

if i cant figure out a way of wiring in the itr distributor can i just use a 0bd1 distributor from a 94-95 gsr?

Kataku2K3

Yea that's the other option, I really doubt that you would have too much trouble with that wiring tho... it's not complicated at all, like i said just match the colors up... Peace

6pucker

so all the wires just color match? are there any wires that is not used? (92-95 civic distributor wire harness to whatever year itr distributor)

thanks

MEANB18

Well I forgot one thing to add I guess, do I need to have the crank positioning sensor? The obd1 harness does NOT have this, so I wouldn't THINK I need it if it doesn't go to my ecu anyways.

ABout the distributor plug, The obd1 harness will have TWO plugs instead of the obd2 single plug. (I think it's the same on the obd1 integra harness) The bottom plug, or the plug that has only two wires, you cut and tape the BLUE wire, this is a tach wire that is not needed. The black with yellow stripe wire, match up with the same wire on the obd2 plug. keep going down the line, the colors should match. If not, look on the side going directly into the distributor and match the colors that way... HAHA kind of hard to explain! Hope this helps...

Kataku2K3

Yup the OBD1 ECU won't look for the CKFS so you don't need to worry about it just as you thought... Peace

SupaFly_Honda

hey guys I got a jdm obd1B18c w/ cut harness. I was wondering if I can use my obd1 sohc vtec harness for this motor?

Kataku2K3

If your dropping it into a 92-95 Civic or 94-2001 Teg yup... You'll have to rewire the plugs just as I was sayin abouve^^ but it's not hard at all... If you want it to look really nice you'll have to extend and shorten some wires... Again not all that much work... I would pull the entire loom off, extend, shorten, and move what you need to the rewrap it all back up... Good Luck