* * OBD1 B-series engine into OBD2a/OBD2b civic/integra * *
You'll need an EK b-series rear engine "T" bracket but you can reuse your SOHC rear engine (rubber) mount when dropping in a B-series engine.
the car is a 99 German spec hatch with a 1.4l none vtec d14 motor. I was surprised that the d series alternator fits.
my only concern or worry is: the 99 harness has a 8 pin Distributor plug with 8 wires. my obd1 distributor has 10 pin plug with 9 wires,
the extra wire is the tach signal, can I tap this into the tach ouput on the shock tower?
Last edited by rudebwoy; Jan 18, 2009 at 12:32 PM.
I'm swapping a 97 gsr into my 1999 civic ex. I'm having some trouble with the dizzy wiring issue. My stock dizzy has 8 wires, whereas my b series dizzy has 9 wires. I've been trying to read up on it, but i'm still a little confused as to what to do.
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
I recently failed my emissions because of code p0171 in my EM1.
b18Cr with a p2t ecu that i normally run for emissions.
Well, without doing the proper research, i bought a 00-01 USDM P73.
Ive read that the immobilizer can be bypassed, removed, etc. But i cant find any info on how to do it.
Katman, do you know anything about this procedure?
b18Cr with a p2t ecu that i normally run for emissions.
Well, without doing the proper research, i bought a 00-01 USDM P73.
Ive read that the immobilizer can be bypassed, removed, etc. But i cant find any info on how to do it.
Katman, do you know anything about this procedure?
I'm swapping a 97 gsr into my 1999 civic ex. I'm having some trouble with the dizzy wiring issue. My stock dizzy has 8 wires, whereas my b series dizzy has 9 wires. I've been trying to read up on it, but i'm still a little confused as to what to do.
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
in my head it seems simple, but don't know if my description is clear.
My problem is dealing with a sohc. I installed an obd1 d15b vtec into a 00 civic dx. I took the intake manifold off the original dx and installed it. I am using obd2 dizzy,injectors and ecu. My problem is I get fuel and spark but doesnt start. Seems like timing is not right. Timing at the crank is good. But, The dizzy does not line up to the bolt holes on the head, and I have a crank angle sensor hanging cause this motor does not have it by the crank. Do I need to change the dizzy? And what do I do bout the sensor that's not there. Will that make it somewhat misfire?
I just finished making one, some reason my pics are not available yet on image shack when they are I will post them.
1. first thing I did, I found a distributor from a 2000 civic, I so happen to have a bad one in my junk box. (note there are other plugs on a civic that will fit the 2000 distributor plug so no need to hack up a distributor)

2. I cut off the distributor plugs from a OBD1 civic harness

3. next I plug the obd1 10 pin harness into the obd2b distributor plug that I cut off the obd2b distributor.

4. to make wiring simple, I loop each wire one at a time into each other with the plugs still connected to each other. the blackyellow wire from the obd2b plug is left over.

5. then on the 2 pin connector of the obd1 distributor harness connect the remaining black/yellow wire of the obd2b distributor plug to the black/yellor thick wire of the obd1 harness.
6. remainding wire off the obd1 distributor harness (blue) will be tapped into the RPM/TACH blue wire of the shock tower.
simple took me 10 minutes to cut solder and schrink tube it.
finished product
NOTE: the obd1 distributor big plug is a direct fit to the Obd2b distributor, so you can make this adapter from a junk obd1 harness
1. first thing I did, I found a distributor from a 2000 civic, I so happen to have a bad one in my junk box. (note there are other plugs on a civic that will fit the 2000 distributor plug so no need to hack up a distributor)

2. I cut off the distributor plugs from a OBD1 civic harness

3. next I plug the obd1 10 pin harness into the obd2b distributor plug that I cut off the obd2b distributor.

4. to make wiring simple, I loop each wire one at a time into each other with the plugs still connected to each other. the blackyellow wire from the obd2b plug is left over.

5. then on the 2 pin connector of the obd1 distributor harness connect the remaining black/yellow wire of the obd2b distributor plug to the black/yellor thick wire of the obd1 harness.
6. remainding wire off the obd1 distributor harness (blue) will be tapped into the RPM/TACH blue wire of the shock tower.
simple took me 10 minutes to cut solder and schrink tube it.
finished product

NOTE: the obd1 distributor big plug is a direct fit to the Obd2b distributor, so you can make this adapter from a junk obd1 harness
Last edited by rudebwoy; Jan 4, 2009 at 10:10 AM.
hey there katman,
first your write up not confusing at all (for my car at least) but i have a question about it.
okay so this question might have been answered already and sorry if it was :-/.
i currently have a m/t 94 acura integra that just got wrecked but the motor and trans are good :
:
i just bought a 96 integra with a blown timing belt (irrelevant) con being its automatic. we obviously want to swap it to manual but i just need to know what i'll need if i want to keep the car obd2...since the 94 is obd1...what all is interchangeable and what all would i have to get my hands on?
thank you!
first your write up not confusing at all (for my car at least) but i have a question about it.
okay so this question might have been answered already and sorry if it was :-/.
i currently have a m/t 94 acura integra that just got wrecked but the motor and trans are good :
: i just bought a 96 integra with a blown timing belt (irrelevant) con being its automatic. we obviously want to swap it to manual but i just need to know what i'll need if i want to keep the car obd2...since the 94 is obd1...what all is interchangeable and what all would i have to get my hands on?
thank you!
I'm swapping a 97 gsr into my 1999 civic ex. I'm having some trouble with the dizzy wiring issue. My stock dizzy has 8 wires, whereas my b series dizzy has 9 wires. I've been trying to read up on it, but i'm still a little confused as to what to do.
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
Is it easier to change the plug on the EWH side or the dizzy side (do i change the plug with 8 wires or 9 wires)?
What is the extra wire on the b series dizzy thats not on the d series?
All you need to do is convert your 99 EX's dizzy plug (EWH side) to the 97 GSR dizzy plug by color matching the wires. Being that your SOHC dizzy is missing 1 wire, don't worry, the car will run and your tach will work. Ignore the fact 1 dizzy wire is missing altogether.
I recently failed my emissions because of code p0171 in my EM1.
b18Cr with a p2t ecu that i normally run for emissions.
Well, without doing the proper research, i bought a 00-01 USDM P73.
Ive read that the immobilizer can be bypassed, removed, etc. But i cant find any info on how to do it.
Katman, do you know anything about this procedure?
b18Cr with a p2t ecu that i normally run for emissions.
Well, without doing the proper research, i bought a 00-01 USDM P73.
Ive read that the immobilizer can be bypassed, removed, etc. But i cant find any info on how to do it.
Katman, do you know anything about this procedure?

also, you will have a constant check engine light once its removed and this will fail emissions testing obviously.
I have an aftermarket immobilizer chip I sell that basically replaces teh imm chip so you can use the ecu in any car without the check engine light problem.
hit me up if you're interested.
hey there katman,
first your write up not confusing at all (for my car at least) but i have a question about it.
okay so this question might have been answered already and sorry if it was :-/.
i currently have a m/t 94 acura integra that just got wrecked but the motor and trans are good :
:
i just bought a 96 integra with a blown timing belt (irrelevant) con being its automatic. we obviously want to swap it to manual but i just need to know what i'll need if i want to keep the car obd2...since the 94 is obd1...what all is interchangeable and what all would i have to get my hands on?
thank you!
first your write up not confusing at all (for my car at least) but i have a question about it.
okay so this question might have been answered already and sorry if it was :-/.
i currently have a m/t 94 acura integra that just got wrecked but the motor and trans are good :
: i just bought a 96 integra with a blown timing belt (irrelevant) con being its automatic. we obviously want to swap it to manual but i just need to know what i'll need if i want to keep the car obd2...since the 94 is obd1...what all is interchangeable and what all would i have to get my hands on?
thank you!
In order to make an OBD1 B-series engine compatible with an OBD2 ecu, you need swap these OBD2 parts over to the OBD1 engine:
Dizzy / injectors + fuel rail w/EGR sensor/ alternator / IAT sensor (if different) / oil pump w/integrated CKF sensor along w/timing belt gear parts + timing belt covers (or perform CKF wiring trick) / retain the 96 integra exhaust manifold + catalytic to run dual 02 sensors / retain smog equipment from the 96 integra.
CKF wiring trick info can be found here:
http://ff-squad.com/wp/?page_id=12
Only perform this wiring trick if you do not want to swap the OBD2 oil pump over.
I believe that should be it..
Happy New Year's btw!
Originally Posted by I'm assuming you're just going to use the OBD1 b-series long block and mate it to the auto trans??
In order to make an OBD1 B-series engine compatible with an OBD2 ecu, you need swap these OBD2 parts over to the OBD1 engine:
Dizzy / injectors + fuel rail w/EGR sensor/ alternator / IAT sensor (if different) / oil pump w/integrated CKF sensor along w/timing belt gear parts + timing belt covers (or perform CKF wiring trick) / retain the 96 integra exhaust manifold + catalytic to run dual 02 sensors / retain smog equipment from the 96 integra.
CKF wiring trick info can be found here:
[url
In order to make an OBD1 B-series engine compatible with an OBD2 ecu, you need swap these OBD2 parts over to the OBD1 engine:
Dizzy / injectors + fuel rail w/EGR sensor/ alternator / IAT sensor (if different) / oil pump w/integrated CKF sensor along w/timing belt gear parts + timing belt covers (or perform CKF wiring trick) / retain the 96 integra exhaust manifold + catalytic to run dual 02 sensors / retain smog equipment from the 96 integra.
CKF wiring trick info can be found here:
[url
http://ff-squad.com/wp/?page_id=12[/url]
Only perform this wiring trick if you do not want to swap the OBD2 oil pump over.
I believe that should be it..
Happy New Year's btw!
Only perform this wiring trick if you do not want to swap the OBD2 oil pump over.
I believe that should be it..
Happy New Year's btw!
I just installed a d15b sohc vtec into a 00 civic dx. I converted to obd -1 using a jumper harness, obd 1 distributor, and obd-1 injectors. I followed the wiring diagram on this thread on how to depin and repin the distributor. I also used the stock dx intake manifold on the motor because initially it was going to stay obd 2.
My problem: It starts up and idles. But I throw a code for Idle air control valve and crank position sensor. What do i need to do to the iacv to make it work. (I'm using the obdII manifold and sensor). I followed the diagram on the thread for the distributor but I had 2 wires that did not match the harness. One I know is for the tach. (Blue). But then I had another one left over. What did I mix up to throw the code?
Thanks ahead of time for the help. I really appreciate this.
My problem: It starts up and idles. But I throw a code for Idle air control valve and crank position sensor. What do i need to do to the iacv to make it work. (I'm using the obdII manifold and sensor). I followed the diagram on the thread for the distributor but I had 2 wires that did not match the harness. One I know is for the tach. (Blue). But then I had another one left over. What did I mix up to throw the code?
Thanks ahead of time for the help. I really appreciate this.
I just installed a d15b sohc vtec into a 00 civic dx. I converted to obd -1 using a jumper harness, obd 1 distributor, and obd-1 injectors. I followed the wiring diagram on this thread on how to depin and repin the distributor. I also used the stock dx intake manifold on the motor because initially it was going to stay obd 2.
My problem: It starts up and idles. But I throw a code for Idle air control valve and crank position sensor. What do i need to do to the iacv to make it work. (I'm using the obdII manifold and sensor). I followed the diagram on the thread for the distributor but I had 2 wires that did not match the harness. One I know is for the tach. (Blue). But then I had another one left over. What did I mix up to throw the code?
Thanks ahead of time for the help. I really appreciate this.
My problem: It starts up and idles. But I throw a code for Idle air control valve and crank position sensor. What do i need to do to the iacv to make it work. (I'm using the obdII manifold and sensor). I followed the diagram on the thread for the distributor but I had 2 wires that did not match the harness. One I know is for the tach. (Blue). But then I had another one left over. What did I mix up to throw the code?
Thanks ahead of time for the help. I really appreciate this.
My suggestion to you is to run the OBD1 intake manifold w/OBD1 IACV converting your IACV wiring to 2-wire specifications.
As for the crank positioning problem, i'm pretty sure you're getting this code because of the mix up of the 2 wires that didn't match up. Try swapping the 2 wires around and see if that clears the code. If it does, you don't need to worry about the extra dizzy wire, just cap it off or tape it back and not worry about it. Its unnecessary as long as you dont get a check light.
Thanks very much for the information. My last question is how to I convert the iacv wiring to 2 wires? I might be blind cause i didnt see it in the thread and the links on the first page just showed me some legos poundin sum butt
just follow the 3 to 2-wire conversion information in my diagram here:
Ive been reading through a few pages here and and I have a few questions of my own. I think I have everything down pat but I also feel that I need some help also.
I have a 1996 civic DX coupe 5speed and i'm swapping an obd1 gsr into it.
Things I will need
1. 99-2000 rear tranny bracket
2. 96-97 del sol a/c bracket(will it work with my d series compressor?)
3.99-2000 front tranny bracket
4.99-2000 dual post engine block mount
5. Linkage from a 94-2000 Integra
6. Will 94-2000 Integra axles work with my dx hubs?
Electrical woes.
Are there any issues with swapping the EX 5spd harness to a 5spd DX that I need to know about or overlooked?
Since i'm planning on using the obd1 JDM gsr ecu, is there anything I need to know about getting an obd2 ->obd1 jumper harness seeing as I will be using the EX harness in a DX chassis?
If I read this correctly I can just buy an obd2 B-series vtec dizzy and it will plug right up to my vehicles EX harness?
Also, I am able to purchase an obd2 b-series alternator and plug it into my EX harness without any electrical work?
Will I have any CKP wiring woes seeing as I'm using the OBD1 engine and ecu in an obd2 chassis?
The IAC wont be needed in and engine being run with an obd1 ecu would it?
Sorry if some of the questions seem nubbish, I'm a pharm tech that just got off of a 9 hour shift and i'm dead tired..my brain seems to be stuck on medicine. Any help would be appreciated, thanks guys.
Also one last thing, what would be the difference between a full fledged obd2 gsr engine vs. an obd1 engine with obd2 adaptations such as the new dizzy/injector harness/alternator?
I have a 1996 civic DX coupe 5speed and i'm swapping an obd1 gsr into it.
Things I will need
1. 99-2000 rear tranny bracket
2. 96-97 del sol a/c bracket(will it work with my d series compressor?)
3.99-2000 front tranny bracket
4.99-2000 dual post engine block mount
5. Linkage from a 94-2000 Integra
6. Will 94-2000 Integra axles work with my dx hubs?
Electrical woes.
Are there any issues with swapping the EX 5spd harness to a 5spd DX that I need to know about or overlooked?
Since i'm planning on using the obd1 JDM gsr ecu, is there anything I need to know about getting an obd2 ->obd1 jumper harness seeing as I will be using the EX harness in a DX chassis?
If I read this correctly I can just buy an obd2 B-series vtec dizzy and it will plug right up to my vehicles EX harness?
Also, I am able to purchase an obd2 b-series alternator and plug it into my EX harness without any electrical work?
Will I have any CKP wiring woes seeing as I'm using the OBD1 engine and ecu in an obd2 chassis?
The IAC wont be needed in and engine being run with an obd1 ecu would it?
Sorry if some of the questions seem nubbish, I'm a pharm tech that just got off of a 9 hour shift and i'm dead tired..my brain seems to be stuck on medicine. Any help would be appreciated, thanks guys.
Also one last thing, what would be the difference between a full fledged obd2 gsr engine vs. an obd1 engine with obd2 adaptations such as the new dizzy/injector harness/alternator?
Last edited by c0d0r; Jan 7, 2009 at 05:39 PM.
Ive been reading through a few pages here and and I have a few questions of my own. I think I have everything down pat but I also feel that I need some help also.
I have a 1996 civic DX coupe 5speed and i'm swapping an obd1 gsr into it.
Things I will need
1. 99-2000 rear tranny bracket
2. 96-97 del sol a/c bracket(will it work with my d series compressor?)
Correct, this bracket adapts the D-series A/C comp
3.99-2000 front tranny bracket
94-01 integra also works - so if your GSR swap comes with it, you can use it.
4.99-2000 dual post engine block mount
5. Linkage from a 94-2000 Integra
or 99-00 Si
6. Will 94-2000 Integra axles work with my dx hubs?
Yes as will 99-00 Si
Electrical woes.
Are there any issues with swapping the EX 5spd harness to a 5spd DX that I need to know about or overlooked?
Yes there is. To complete the plug n' play aspects of using an EX harness, you also need to get these items:
OBD2 B-series VTEC dizzy
OBD2 B-series VTEC or OBD2 EX injectors
OBD2 B-series alternator (VTEC or non-VTEC model will work)
You might need to swap out your IAT sensor plug for that of the OBD1 IAT plug. The IAT sensor is located on your intake arm and is a black round-squarish colored plug which is not compatible with an OBD1 IAT sensor.
Being that your ultimately converting to OBD1 you don't need to worry about wiring in the 2nd 02 sensor or performing the CKF ecu wiring trick. If you wound using a US OBD2 ecu, then you would need to do these 2 wire jobs.
Since i'm planning on using the obd1 JDM gsr ecu, is there anything I need to know about getting an obd2 ->obd1 jumper harness seeing as I will be using the EX harness in a DX chassis?
For the record, the OBD1 JDM GSR ecu's programming SUCKS. If you can try and get your hands on a US OBD1 GSR ecu instead (has better programming) do it. If your stuck with the JDM GSR ecu for now, thats fine though. Other than that, there's nothing more to be said when converting to OBD1 with your scenerio.
If I read this correctly I can just buy an obd2 B-series vtec dizzy and it will plug right up to my vehicles EX harness?
Correct, as will injectors and the alternator
Also, I am able to purchase an obd2 b-series alternator and plug it into my EX harness without any electrical work?
Correct.
Will I have any CKP wiring woes seeing as I'm using the OBD1 engine and ecu in an obd2 chassis?
Already answered.
The IAC wont be needed in and engine being run with an obd1 ecu would it?
All Honda engines need the IACV to keep the idle smooth, but your EX harness will plug right into the GSR's IACV just fine.
Also one last thing, what would be the difference between a full fledged obd2 gsr engine vs. an obd1 engine with obd2 adaptations such as the new dizzy/injector harness/alternator?
Nothing, power wise. The difference between OBD1 and OBD2 is mostly all electronics (ie. different style plugs, better some might say) and ecu programming. OBD2 ecu's are more "sensitive" and use smaller components inside the ecu making it way difficult to reprogram and also are more susceptible to throwing CEL's. Electronics aside, OBD1 & OBD2 GSR engines are the same internally and are overall the same engine. OBD1 have an advantage over OBD2 simply because the ECU's are easily re-programmable and are forward-compatible with OBD2 electronics (dizzy, injectors, etc).
Now when comparing a JDM GSR engine to a US engine, that's where differences come in. JDM GSR engines have higher compression and shitty ecu programming, but used with a US GSR ecu you have a little ditty on your hands. Generally JDM engines output more power than US engine, ranging from around 10-15hp more due to higher compression pistons, ecu programming, and sometimes cam shaft profiles being better, as well as LSD equipped tranmissions.
I have a 1996 civic DX coupe 5speed and i'm swapping an obd1 gsr into it.
Things I will need
1. 99-2000 rear tranny bracket
2. 96-97 del sol a/c bracket(will it work with my d series compressor?)
Correct, this bracket adapts the D-series A/C comp
3.99-2000 front tranny bracket
94-01 integra also works - so if your GSR swap comes with it, you can use it.
4.99-2000 dual post engine block mount
5. Linkage from a 94-2000 Integra
or 99-00 Si
6. Will 94-2000 Integra axles work with my dx hubs?
Yes as will 99-00 Si
Electrical woes.
Are there any issues with swapping the EX 5spd harness to a 5spd DX that I need to know about or overlooked?
Yes there is. To complete the plug n' play aspects of using an EX harness, you also need to get these items:
OBD2 B-series VTEC dizzy
OBD2 B-series VTEC or OBD2 EX injectors
OBD2 B-series alternator (VTEC or non-VTEC model will work)
You might need to swap out your IAT sensor plug for that of the OBD1 IAT plug. The IAT sensor is located on your intake arm and is a black round-squarish colored plug which is not compatible with an OBD1 IAT sensor.
Being that your ultimately converting to OBD1 you don't need to worry about wiring in the 2nd 02 sensor or performing the CKF ecu wiring trick. If you wound using a US OBD2 ecu, then you would need to do these 2 wire jobs.
Since i'm planning on using the obd1 JDM gsr ecu, is there anything I need to know about getting an obd2 ->obd1 jumper harness seeing as I will be using the EX harness in a DX chassis?
For the record, the OBD1 JDM GSR ecu's programming SUCKS. If you can try and get your hands on a US OBD1 GSR ecu instead (has better programming) do it. If your stuck with the JDM GSR ecu for now, thats fine though. Other than that, there's nothing more to be said when converting to OBD1 with your scenerio.
If I read this correctly I can just buy an obd2 B-series vtec dizzy and it will plug right up to my vehicles EX harness?
Correct, as will injectors and the alternator
Also, I am able to purchase an obd2 b-series alternator and plug it into my EX harness without any electrical work?
Correct.
Will I have any CKP wiring woes seeing as I'm using the OBD1 engine and ecu in an obd2 chassis?
Already answered.
The IAC wont be needed in and engine being run with an obd1 ecu would it?
All Honda engines need the IACV to keep the idle smooth, but your EX harness will plug right into the GSR's IACV just fine.
Also one last thing, what would be the difference between a full fledged obd2 gsr engine vs. an obd1 engine with obd2 adaptations such as the new dizzy/injector harness/alternator?
Nothing, power wise. The difference between OBD1 and OBD2 is mostly all electronics (ie. different style plugs, better some might say) and ecu programming. OBD2 ecu's are more "sensitive" and use smaller components inside the ecu making it way difficult to reprogram and also are more susceptible to throwing CEL's. Electronics aside, OBD1 & OBD2 GSR engines are the same internally and are overall the same engine. OBD1 have an advantage over OBD2 simply because the ECU's are easily re-programmable and are forward-compatible with OBD2 electronics (dizzy, injectors, etc).
Now when comparing a JDM GSR engine to a US engine, that's where differences come in. JDM GSR engines have higher compression and shitty ecu programming, but used with a US GSR ecu you have a little ditty on your hands. Generally JDM engines output more power than US engine, ranging from around 10-15hp more due to higher compression pistons, ecu programming, and sometimes cam shaft profiles being better, as well as LSD equipped tranmissions.






