Your 1JZ-GTE And 2JZ-GTE Swap Guide For Dummies Discussion Thread!
- Thread starter IBoughtASupra
- Start date
Albert;1795884 said:
... thats it? WoW yea i need to get the AC working in my car...
that 1-wire plug would be the EA12 connector wire correct? Do you know where into the A/C Pump
Just read through your Guide and found it very useful . . . as you say there are LOTS of different threads with only PART info or very vague, and lots of cross-referencing links. So I appreciate you trying to come up with a definitive Guide to all that's required to do a 1JZ or 2JZ swap into a Mk3.
However, I hope you'll consider that some of us aren't interested in having a Turbocharger . . . I'm hoping to put a 2JZ-GE from a Mk4 Supra to replace my 7M-GE in my 1991 Mk3 Supra . . using the 2J ECU and engine loom.
I'm trying to get ALL the info and parts I will need BEFORE going ahead with this, as my Supra is my daily driver, and I'd like to get the swap done in just a few days.
Thanks to your thread I'm now quite confident about lots of issues, like engine mounts, fan/radiator, aircon, power steering, Oil Pressure & Temperature Gauges.
I wonder if you or anyone else can answer these queries:
1. Are the ECU connections/wire colors the same on a SUPRA 2JZ-GE? (Most of you guys seem to use Lexus or Aristo engines)
2. Will the Rev Counter (Tacho) work as it is? (the ignition systems on both N/A engines look very similar)
3. If I use the bellhousing from a Mk4 Supra W58 on my Mk3 W58 will it all line up OK? Should I use the Clutch & Bearing from the 7M-GE or the 2JZ-GE?
4. Are the heater hoses to and from the bulkhead similar? Will either the Mk3 or Mk4 hoses fit?
5. If you have the 2JZ-GE engine fan (with clutch), can you keep the stock 7M radiator cowling? (and electric aircon fans)
6. Has ANYONE come up with a simple list of body wires to cut and splice to make it work? It seems that everyone doing this has to work it all out from scratch, using the complicated diagrams, whereas a simple table showing which color wire from the MA70 body loom to cut and splice to what color wire to the 2J ECU Body connector would make the job SO much easier !!
However, I hope you'll consider that some of us aren't interested in having a Turbocharger . . . I'm hoping to put a 2JZ-GE from a Mk4 Supra to replace my 7M-GE in my 1991 Mk3 Supra . . using the 2J ECU and engine loom.
I'm trying to get ALL the info and parts I will need BEFORE going ahead with this, as my Supra is my daily driver, and I'd like to get the swap done in just a few days.
Thanks to your thread I'm now quite confident about lots of issues, like engine mounts, fan/radiator, aircon, power steering, Oil Pressure & Temperature Gauges.
I wonder if you or anyone else can answer these queries:
1. Are the ECU connections/wire colors the same on a SUPRA 2JZ-GE? (Most of you guys seem to use Lexus or Aristo engines)
2. Will the Rev Counter (Tacho) work as it is? (the ignition systems on both N/A engines look very similar)
3. If I use the bellhousing from a Mk4 Supra W58 on my Mk3 W58 will it all line up OK? Should I use the Clutch & Bearing from the 7M-GE or the 2JZ-GE?
4. Are the heater hoses to and from the bulkhead similar? Will either the Mk3 or Mk4 hoses fit?
5. If you have the 2JZ-GE engine fan (with clutch), can you keep the stock 7M radiator cowling? (and electric aircon fans)
6. Has ANYONE come up with a simple list of body wires to cut and splice to make it work? It seems that everyone doing this has to work it all out from scratch, using the complicated diagrams, whereas a simple table showing which color wire from the MA70 body loom to cut and splice to what color wire to the 2J ECU Body connector would make the job SO much easier !!
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Roger UK;1797138 said:
1: 2jzge from a lexus to a supra I believe are the same. (My 2jzge is from a lexus, and I used a supra 2jzge diagram) DOnt qoute me on this
2: Yes, All I did was hook up the Black Tach wire, and my Tach works fine.
3: Yes. They are the same. Even tho cars share the same stuff, I always use parts from whichever car it came out of. Ie If the W58 came out of a 1995 supra, Buy one for that year make model. (Just in case)
4: No they wont, I just ran Universal heater hose to the heater core, then from the firewall, back into the top of the head. it was too easy. (you may be able to find pre-molded hoses that fit, but I wasnt going to source it)
5. Yes. I am running 2jzge fan and clutch. And I still have stock 7m radiator and shroud.
6. I couldnt find anything. Its really not that difficult. I followed the 1jzgte wiring for the body. same colors it turned out. I still tested the connection before i soldered it on though.
Many thanks Albert
So did your car originally have an N/A Engine? (7M-GE) Because I know the turbo versions have quite a few differences to things like the ignition circuit and therefore tacho
I haven't looked at EITHER ECU yet . . is there just ONE plug that connects to the body circuits? (and the rest connect to the engine)
Did you not come up with a list of wire colors to connect together that you could post?
So did your car originally have an N/A Engine? (7M-GE) Because I know the turbo versions have quite a few differences to things like the ignition circuit and therefore tacho
I haven't looked at EITHER ECU yet . . is there just ONE plug that connects to the body circuits? (and the rest connect to the engine)
Did you not come up with a list of wire colors to connect together that you could post?
Roger UK;1797159 said:
1) When you swap a GTE into a N/A car, your tach will not work correctly. It's been documented on here. If your car was a turbo and you swapped a GE in, I am not sure as there are very very few people who have done this. It's an easy fix to swap the tachs for one that suits your motor or whole cluster that suits your motor.
2) No ECU has body plugs. All have ones for the engine and then the body plugs run off those. If you are attempting a swap like this, a multimeter will help you to find common wires. There are a couple diagrams in my thread the will help you on the color of wires.
3) Look at my thread. There is wiring info there. Honestly, wiring for the GE is too darn easy, actually, it's easy for both. All wiring info need is there, there is really nothing GTE or GE specific when the wiring is related. Simple stuff
Main relay
Power for coils
Power for injectors
Fuel pump relay
Constant power for ECU
Constant ground for ECU
Ignition switch to turn on ECU
Starter Signal
Oil pressure wire (Optional)
AC switch(Optional)
Keep in mind, the AC circuit is not controlled by the ECU, it's done by another module by the stock computer location.
Hey guys, sorry if it was mentioned and I missed it, but is alternator wiring addressed anywhere? Some help would be nice.
- Joe
Sent from my iPhone
- Joe
Sent from my iPhone
I will be adding that in the next update. I read everyone's recommendations and then I make on update. I PM IJ. and he does the update for me since that thread is locked to keep the discussion here and the correct constantly updated video there.
Many Thanks IBoughtASupra
I know both the Turbo engines have very different ignition circuits, but I'm hoping that as my engine is a 7M-GE and I'm fitting a 2JZ-GE that the Tacho will work without modification (one person has confirmed that - can anyone else?)
I know both the Turbo engines have very different ignition circuits, but I'm hoping that as my engine is a 7M-GE and I'm fitting a 2JZ-GE that the Tacho will work without modification (one person has confirmed that - can anyone else?)
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I've been doing a lot of reading of various threads . . . I'm sorry, I'm still rather confused!
Please bear in mind I haven't got a 2JZ engine yet, but I'm trying to suss out the wiring required to do an engine transplant. (All the various technical write ups presume you understand the basic layout!)
What plugs are on the end of the ENGINE loom? And which plug into the ECU, and which don't?
Am I correct in thinking that these plugs are all on the end of the 2JZ engine loom:
A (E10) - plugs in ECU
B (E9) - plugs into ECU
II1 - ends up near ECU to pick up body or dash wiring
IJ1 - ends up near ECU to pick up body or dash wiring
IJ2 - ends up near ECU to pick up body or dash wiring
EA1 - ends up near fuse box
EA2 - ends up near fuse box
Am I correct? Are there any I've missed out?
Sorry if I'm being a dummy, but all the various wiring notes around the internet presume you already know this !
Please bear in mind I haven't got a 2JZ engine yet, but I'm trying to suss out the wiring required to do an engine transplant. (All the various technical write ups presume you understand the basic layout!)
What plugs are on the end of the ENGINE loom? And which plug into the ECU, and which don't?
Am I correct in thinking that these plugs are all on the end of the 2JZ engine loom:
A (E10) - plugs in ECU
B (E9) - plugs into ECU
II1 - ends up near ECU to pick up body or dash wiring
IJ1 - ends up near ECU to pick up body or dash wiring
IJ2 - ends up near ECU to pick up body or dash wiring
EA1 - ends up near fuse box
EA2 - ends up near fuse box
Am I correct? Are there any I've missed out?
Sorry if I'm being a dummy, but all the various wiring notes around the internet presume you already know this !
Still no alternator plug update? I stalk your thread like a jaguar!!! Will you be addressing both the two and three plug variations by any chance?
- Joe
Sent from my iPhone
- Joe
Sent from my iPhone
Soon. It took me about a month to get all of that info, even though it was widespread, I verified what to be correct.
Well then you understand me when I say I truly feel your pain!!! Thanks for your hard work brother. This little thread of yours is going to very quickly become the Mecca for all things JZ.
- Joe
Sent from my iPhone
- Joe
Sent from my iPhone
Hey guys.
I went on a 10 hour car trip with my cousin to Dubai to get a 2jz block for my 1.5jz project and ended up buying a full 2jzgte vvti engine, i am hoping that the 2jzgte block is the same as the vvti.
Any way, my question is about the Serpentine Belt. I already took out the A/C off my 1jz and used the audi belt, and i am planning to take out the A/C for the 2jz. Can i use the same belt or are they different?
I went on a 10 hour car trip with my cousin to Dubai to get a 2jz block for my 1.5jz project and ended up buying a full 2jzgte vvti engine, i am hoping that the 2jzgte block is the same as the vvti.
Any way, my question is about the Serpentine Belt. I already took out the A/C off my 1jz and used the audi belt, and i am planning to take out the A/C for the 2jz. Can i use the same belt or are they different?
Just take a tape measure, run it around the pulleys after you have removed the power steering and A/C and you will see the belt size you need.
The wiring info has been added for the round plug alternator setup.
Keep in mind. I have seen some 1JZ harness where the round plug is in the engine harness and not on the body harness. It's easier to extend the stock one. I will look up to see how it's done if you have a round plug already on your 1JZ engine harness.
Keep in mind. I have seen some 1JZ harness where the round plug is in the engine harness and not on the body harness. It's easier to extend the stock one. I will look up to see how it's done if you have a round plug already on your 1JZ engine harness.
Hey Andy, here is what Tweak'd Performance gave me for oval plug info on my 86.5 NA to chaser 1JZ:
"I'm assuming you're going from the round Alt plug to the oval
plug. Looking into the back of the round connector. The TOP pin goes
to pin 3 on the oval connector. BOTTOM RIGHT goes to pin 1, and
BOTTOM LEFT goes to pin 2 on the oval connector."
Hope this helps your search, and hope you can identify and label these for me! I can get color coordination as soon as I'm out to my car next.
- Joe
Sent from my iPhone
"I'm assuming you're going from the round Alt plug to the oval
plug. Looking into the back of the round connector. The TOP pin goes
to pin 3 on the oval connector. BOTTOM RIGHT goes to pin 1, and
BOTTOM LEFT goes to pin 2 on the oval connector."
Hope this helps your search, and hope you can identify and label these for me! I can get color coordination as soon as I'm out to my car next.
- Joe
Sent from my iPhone