need help b18c2 swap please

[giffney]

hey guys , i need some help , ive searched around alot about the b18c2 swap in a ek but alot of it comes from honda tech , and they use different terms so its a bit confusing ..
i have recently purchased a 1995 dc2 b18c2 halfcut , i currently have a 1999 ek1 cxi ,
i am aware i need a few extra mounts such as
- an ek4 rear engine bracket
- an ek 4 side engine bracket
- im aware i have to wire up vtec
- im aware the exhaust is too short needs to get welded

can anyone help me with what else do i need to purchase / do to complete the swap that might be a bit tricky.

and i have a feeling the b18c2 motor i have is obd1 and the ek is obd2 , could anyone spare me some time with some help with how i can work with this?

any help is appreciated as its my first time doing a (honda) swap so dont be too harsh. cheers.

[VTec1987]

You will need to buy a p72 obd2a ecu ( plug and play) on your Ek4 harness ( i have 1 avaliable here)
You need to wire up IAB for your b18c2 engine

[dorikin]

Passenger side engine mount bracket on the B18C block is 3 post/bolt style, whereas EK uses 2 post - buy EK4/EM1 bracket or aftermarket

You need a rear T-bracket from an EK4/EM1 aswell (connects gearbox to rear engine mount on subframe)

Re-use the EK D-series upper gearbox bracket. Re-use all the D-series engine mounts

What year is your B18C? You can check if it's OBD1 by the ECU plugs - http://www.ej9.ru/civic/wiring/plugin.jpg

As above, you need an EK B-series engine loom as they run a 1 piece loom into the interior/ecu. DC2 B18C engine loom unplugs at the shock towers.

If you're keeping AC you'll also run into some problems there.

[giffney]

the b18c2 built date is 1995 , not gonna keep ac , dont worry about it.

so theres no way i can just use the b18c wiring loom and the ecu？？

[giffney]

i have a d16y4 motor out of a 1999 honda cxi ek1 , it seems to be obd1 but its 1999 and built date 98 , does this make sense?

[egb16b]

what makes you think its obd1?? it should be obd2.

[giffney]

my bad it is an obd2 , was looking at wrong plug , so i think bein a 95 dc2 its a obd1 , this is gonnna be troublesome any ideas how to run it?

[egb16b]

did the swap come with obd1 ecu?? Or you can use obd2a b18c2 ecu so it'll plug in to your loom.

I have a 18c2 obd2a ecu.. i'll swap you if you have an obd1 18c2 ecu.

[giffney]

yeah , i have the obd1 ecu also , like i said its the entire front cut , nothing missing.

[giffney]

Yes mate mine is obd1 b18c2 I'll swap you pm me address and I'll Pm u mine of ire cool with it

[egb16b]

pm replied.

also for rego purposes.. i think engine has to be same or newer than the chassis. it is in VIC anyway.. can anybody else confirm for NSW?

[giffney]

seems to be ok on here. oh well doing it anyways lol.
http://www.rta.nsw.gov.au/registration/downloads/vsi/vsi_06_-_guidelines_for_light_vehicle_modifications_nov_20 07.pdf

[giffney]

Alright so I checked put my ecu it's a 37820-p2k-q02 , any idea what this is , here's some pics http://i866.photobucket.com/albums/ab226/giffney/490185bd.jpg

http://i866.photobucket.com/albums/ab226/giffney/9ad58682.jpg

[giffney]

Turns out I have Obd 0 on my civic , out of all luck . Lol

[jdmek]

dont think civic ek come with 0bd0

[giffney]

yep trust me , this one does , mayb its not the original engine or whatever , all i know its its definately obd0 , can u see any other explanation for my ecu only having 2 slots? it matches diagram showing its obd0

[giffney]

Hey guys not sure if anyone still checking this thread but my swap is just about done just one last thing before it can be done , if anyone knows which wires go where , with the obd0 to obd1 distributer , the one on the right is obd 0 which has (from left to right ) beige / black , yellow/ black , orange/blue , black , yellow/green, blue , black /yellow and on the obd1 dizzy it goes ( top row left to right then bottom row left to right ) white , white / blue , blue / yellow , orange, orange/blue ,blue/green , yellow /green . And the plug 2 on obd 1 is black/ yellow and blue . It doesn't seem to match the write ups anywhere so that's why Im a bit confused this is all I have left to do . Any help is appreciated

http://i866.photobucket.com/albums/ab226/giffney/4e10a229.jpg

[dorikin]

You don't have OBD0. This is what an OBD0 ECU (http://site.hamotorsports.com/obd0reference.jpg) looks like.

Your P2K ECU is the original computer released in the base model engine EK Civics (D16Y4) in Australia. They were released in the OBD2a era but had different pin outs to the conventional OBD2a due to having a Simplified Fuel Injection (SFI) system instead of Multi-Point Fuel Injection (MPFI) to be more fuel efficient.

The SFI system is almost like a Dual Point Fuel Injection (DPFI), but it has 4 injectors working in pairs 1+3, 2+4.


Now, I don't know why you have defied the advice of others and are trying to use your standard EK engine loom. You are going to run into many more problems other than the Distributor issue above. Knock sensor, IAB, O2 sensor, ECU plugs, VTEC Solenoid, VTEC pressure switch are just the ones that spring to mind. You really need to find an EK4 engine loom. Although you will still need to wire in a few things it will be a lot easier than modifying your EK loom.


Some light reading:

http://www.ozhonda.com/forum/showthread.php?65476-EK-Cxi-P2K-ecu-pinout

http://www.ozhonda.com/forum/showthread.php?113186-EK1-p2k-ecu-help-b4-i-burn-the-car

http://nzhondas.com/tech-help/95335-p72-ecu-nzdm-ek-p2k-ecu-help-needed.html

http://www.ozhonda.com/forum/showthread.php?17476-Ecu-discovery

http://www.ozhonda.com/forum/showthread.php?80840-d16y4-standard-ECU

http://www.civiclife.net/board/topic/109922-distributor-connector-help/

[giffney]

i may have forgot to add , what i have basically already done is used the existing harness and added on the extra needed for the integra ecu for eaxmple knock vtec , ( although they are not connected yet ) i have also already ordered a obd0-obd1 adapter harness because i thought it was a obd0 , thanks for clearing this up , i wish i paid more attention to the ecu pinout in the beggining , i kinda jumped to conclusions thinkin it was a obd0 simply because it had 2 plugs.... and btw i think the oz honad search function is horrible i searched up on it before and it didnt work very well , i appreiciate your help mate , thanks most helpful so far. ill keep you updated , the motors already in and everything just that wiring ><

[giffney]

forgot to mention a couple days ago , started first crack. barely even cranked :) , running fine , by some miracle , everything seems to be good , thanks guys for all the help ill post up some pics and what not in a build thread

[dorikin]

Nice work :)

Did you end up using your OBD1 P72 ECU? and did you get any CEL codes?

[giffney]

yeah used the obd1 p72 ecu , no CEl codes whats so ever

[vn6900]

hy there i am converting my sons d16y4 to a b18c from a integra type r complete front cut with a obd2a and my civic has the dopey p2k i recieved some info from another forum but i think some confusion has happened they told me to use my old engine harness so i have cut the plugs and extended but the dizzy plug is totally different also i found out since that the injectors need to be rewired to be seperate ther is a spare sensor on the side of the bore and one at the top of the motor .does anybody know how to rewire this and where these three items have to be wired too the engine harness off the integra has been cut up now because of some bad advise i am a bit lost any help would be appreciated

[vn6900]

i forgot to add my integra ecu is a p73 cheers