Oh God...What have I done? JDM LS (OBD1) swap into USDM EJ6 (OBD2)
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Oh God...What have I done? JDM LS (OBD1) swap into USDM EJ6 (OBD2)
AH!
So here is the unfortunate situation. Urgh!
I blew the motor in my 97 hatch about 2 weeks ago and since that was my daily I have been trying frantically to get a motor ASAP! I didn't want the stock D series anymore so I decided to go with a relativley inexpensive LS motor B18B. Well I bought the motor but it is JDM B18B. I knew it was a JDM motor when I purchased it but didn't thik there would be to much of a problem.
I read up a little bit about swaping this JDM B18B into my hatch. I know I can convert my car to OBD1; thats not a problem.
The problem is that since it is a JDM motor and will be going into my USDM hatch, I have learned that the harness might not reach. Are the plugs the same shape to where they will just plug into each other regaurdless of the required wiring?
HOW can I get around this. Are there any parts that would help me out? What is the usual procedure with swaping a jdm motor into a usdm car??? I should know this. I have swapped many usdm motors before but never a JDM one....I don't have my motor yet (it is still on its way here)
so I don't know exactly what the harness looks like.
I need to get this motor swapped ASAP. I serched through some things for a good amount of time and could not find exactly what I was looking for.
I work 3 jobs and am having to drive my parents 5 series around too and from work everyday (which they hate) and I need my hatch back!!!
Please help!
I am really hoping I didn't screw myself over.
All input is very much appreciated!
Thank you so much in advance!
(I will continue searching in the mean time)
So here is the unfortunate situation. Urgh!
I blew the motor in my 97 hatch about 2 weeks ago and since that was my daily I have been trying frantically to get a motor ASAP! I didn't want the stock D series anymore so I decided to go with a relativley inexpensive LS motor B18B. Well I bought the motor but it is JDM B18B. I knew it was a JDM motor when I purchased it but didn't thik there would be to much of a problem.
I read up a little bit about swaping this JDM B18B into my hatch. I know I can convert my car to OBD1; thats not a problem.
The problem is that since it is a JDM motor and will be going into my USDM hatch, I have learned that the harness might not reach. Are the plugs the same shape to where they will just plug into each other regaurdless of the required wiring?
HOW can I get around this. Are there any parts that would help me out? What is the usual procedure with swaping a jdm motor into a usdm car??? I should know this. I have swapped many usdm motors before but never a JDM one....I don't have my motor yet (it is still on its way here)
so I don't know exactly what the harness looks like.
I need to get this motor swapped ASAP. I serched through some things for a good amount of time and could not find exactly what I was looking for.
I work 3 jobs and am having to drive my parents 5 series around too and from work everyday (which they hate) and I need my hatch back!!!
Please help!
I am really hoping I didn't screw myself over.
All input is very much appreciated!
Thank you so much in advance!
(I will continue searching in the mean time)
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From: Southwestern PA
I have a link at home that will probably help you but I'm at school right now. I know how you feel about the jobs thing, I'm working 2 and going to school full time.
As for your swap, the harness that's coming with a JDM motor is almost completely useless to you. Aside from a JDM car being RHD so the battery/steering/brake stuff is all switched, the '96+ Civic wiring harness are a completely different design from the '92-'95 Civic's and '94-'00 Integra's. EG/DC harnesses are a 2 piece harness, with an engine and in-car harness that disconnects inside the engine bay. With an EK Civic, it's all one harness that attaches to the engine and goes down through the firewall below the battery and attaches directly to the ECU. Good news is the physical plugs on the engine are almost the same and the harness are interchangeable (IE, you'll need to remove your stock engine's harness and swap it onto the new B18B).
Your going to have a few problems though, a JDM B18B will be OBD I and your car is OBD II. your going to need a conversion harness to use the B18B's OBD I ECU. This will work but will most likely fail you from any legitmate emissions testing (depending on your local laws and connections, this may not be an issue but you should be aware of it). There also may be some issues with plugs not matching up and not being in the right place. Fixing the location is easy (the O2 sensor will probably need to be moved, and most likely others), just buy some wire and some crimp connectors or a soldering gun and some heat shrink tubing. The plugs that may not be the same physical shape and size you should be able to salvage the nessicary plugs form the JDM harness (specifically I'm think injector plugs are different, as will the distributor plug, there may be others). I'll post that link up when I get home (it's specific to swapping an OBD II engine into an OBD II car but it should work for you if you just follow the steps and use a conversion harness). Good luck with everything.
As for your swap, the harness that's coming with a JDM motor is almost completely useless to you. Aside from a JDM car being RHD so the battery/steering/brake stuff is all switched, the '96+ Civic wiring harness are a completely different design from the '92-'95 Civic's and '94-'00 Integra's. EG/DC harnesses are a 2 piece harness, with an engine and in-car harness that disconnects inside the engine bay. With an EK Civic, it's all one harness that attaches to the engine and goes down through the firewall below the battery and attaches directly to the ECU. Good news is the physical plugs on the engine are almost the same and the harness are interchangeable (IE, you'll need to remove your stock engine's harness and swap it onto the new B18B).
Your going to have a few problems though, a JDM B18B will be OBD I and your car is OBD II. your going to need a conversion harness to use the B18B's OBD I ECU. This will work but will most likely fail you from any legitmate emissions testing (depending on your local laws and connections, this may not be an issue but you should be aware of it). There also may be some issues with plugs not matching up and not being in the right place. Fixing the location is easy (the O2 sensor will probably need to be moved, and most likely others), just buy some wire and some crimp connectors or a soldering gun and some heat shrink tubing. The plugs that may not be the same physical shape and size you should be able to salvage the nessicary plugs form the JDM harness (specifically I'm think injector plugs are different, as will the distributor plug, there may be others). I'll post that link up when I get home (it's specific to swapping an OBD II engine into an OBD II car but it should work for you if you just follow the steps and use a conversion harness). Good luck with everything.
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Andy - Reinstated Hybrid Forum Moderator
'06 Subaru Legacy Spec B - Stock, for now
'98 Civic EX - CTR headlights and grill, Kosei K1's, for sale
'90 240SX - SR20DET that will never get installed, project car.
Andy - Reinstated Hybrid Forum Moderator
'06 Subaru Legacy Spec B - Stock, for now
'98 Civic EX - CTR headlights and grill, Kosei K1's, for sale
'90 240SX - SR20DET that will never get installed, project car.
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Joined: Mar 2000
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From: Southwestern PA
Remembered another thread that might help you that was about halfway down the main page (the link I had is the one I posted, that's why I thought of it).
https://www.honda-acura.net/forums/s...d.php?t=154461
https://www.honda-acura.net/forums/s...d.php?t=154461
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Andy - Reinstated Hybrid Forum Moderator
'06 Subaru Legacy Spec B - Stock, for now
'98 Civic EX - CTR headlights and grill, Kosei K1's, for sale
'90 240SX - SR20DET that will never get installed, project car.
Andy - Reinstated Hybrid Forum Moderator
'06 Subaru Legacy Spec B - Stock, for now
'98 Civic EX - CTR headlights and grill, Kosei K1's, for sale
'90 240SX - SR20DET that will never get installed, project car.
Thread Starter
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Originally Posted by Andy
Remembered another thread that might help you that was about halfway down the main page (the link I had is the one I posted, that's why I thought of it).
https://www.honda-acura.net/forums/s...d.php?t=154461
https://www.honda-acura.net/forums/s...d.php?t=154461
I think I am ok now...
Thread Starter
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Joined: Sep 2004
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Awesome guys!
We did the swap this last weekend and everything is good....the only probs we ran into were wiring of course which was expected and the MAP sensor...I guess the MAP sensors for JDM motos mount to the firewall and USDM ones mount to the throttlebody.
Everything is good!
Thanks again!
We did the swap this last weekend and everything is good....the only probs we ran into were wiring of course which was expected and the MAP sensor...I guess the MAP sensors for JDM motos mount to the firewall and USDM ones mount to the throttlebody.
Everything is good!
Thanks again!