intergration relay/1jzgte

[Divin' Devin]

Anyone out there know if the intergration relay behind the fuse block in the kick panel is the same on a 1jzgte is the same as a 7mgte? I got my engine,tranny ,wiring ,ecu,etc. this past weekend. It is out of a jza70 but apparently the vehicle had been wrecked or not much care was given to the removal. It may work but I would rather replace it before installation.If it is different, is there a way to order one from Japan?
Now the harness extension begins! WTF have I gotten myself into?!?!? Why would I get rid of a perfectly good 7mgte for a 1jzgte? Call me nuts!
If anyone can help me with this, please let me know.
- Devin

 

[mattjk]

you don't need to extend the harness. get a body harness adapter kit from driftmotion and save yourself the headache.

 

[Divin' Devin]

you don't need to extend the harness. get a body harness adapter kit from driftmotion and save yourself the headache.

Iv'e been trying to find it on their website without any luck. As far as the intergration relay, could I use one from a lexus 1jzgte?

 

[Ken]

you are worrying yourself for no reason.

the only thing you need to do to get your 1J running (wiring wise) is to adapt the harness to your fusebox, 3 dash connectors, extend the alternator wiring, and splice 1 wire for your a/c if you choose to have it. you can extend the harness if you want; many people just route it through the driver's side by drilling a hole in the firewall or reaming out the speedometer cable hole. up to you.


as long as you have a jza70 harness, wiring it all up is relatively simple. no need to even think about relays because they are compatible between the MA70 and JZA70.

 

[Divin' Devin]

thanks for the advice guys. Info duly noted.
I was reading on supra forums that the JZA70 did not come w/ ABS, is this true? I noticed that I had not seen the "box" by the firewall on any of the swap pics. If this is true , is there a way to still keep my ABS & are there any other issues such as this? I Know I'll have to wire in an oil pressure guage and a new turbo guage. I would like to keep all my options as they were before the swap and maybe add a couple more. How well does this harness lend itself to these modifications?

 

[Ken]

of course you can keep your abs with a 1jz swap. in fact, you don't have to sacrifice anything when doing the swap.

abs is controlled with a separate abs computer that's already on your car.

 

[tsuper92]

you will just need to install and wire the speed sensor on the tran's for the abs

 

[ranger2339]

Ken yor such a pimp!!

 

[Divin' Devin]

cool! Thanks, again. I'm sure glad we have this forum. Maybe when I get done, I'll be able to do the same for someone else. Keep an eye out for more silly questions from me in the future. I am trying to reference this info prior to asking anything. However, I am finding some contradicting opinions out there. So far you guys make sense.
Is there a "HAYNES " type of manual out there for the 1jzgte? Even if it's for another model of vehicle. Just looking for a mechanical reference in English.

Ken yor such a pimp!!

 

[sprite059]

I have just finished yesterday repairing mine. The difference between the 7m and the Jz is the JZ is wider and contains a buzzer for when you leave the key in the ignition and open the door. Mine had shorted out and blown the large diode that is in it.

 

[Ken]

cool! Thanks, again. I'm sure glad we have this forum. Maybe when I get done, I'll be able to do the same for someone else. Keep an eye out for more silly questions from me in the future. I am trying to reference this info prior to asking anything. However, I am finding some contradicting opinions out there. So far you guys make sense.
Is there a "HAYNES " type of manual out there for the 1jzgte? Even if it's for another model of vehicle. Just looking for a mechanical reference in English.

what contradictory opinions are you getting? is it regarding the wiring? Trust me, it is not that bad and complex. Others here who have done the swap will agree as well.

The best english manual for the 1jz is the toyota 2jz tsrm. You will find that the two engines share almost everything like torque specs and disassembly/reassembly procedures.

You can download a pdf 2jz tsrm on supraforums. And then there is the 1jz bible as well, but I don't think it's in english.

 

[Divin' Devin]

yes. differing opinions as far as wiring. Some say that ther is an adapter. which I assume it is just adapter plugs that are jz on harness end and 7m on the dashor engine end.(can't seem to find one or a price)!
Then some say extend the harness and some don't. What I am trying to do is whatever the easiest way is, but not sacrificing quality or have somthing that looks jerry rigged.
I pulled out my dash and matched up the layout of the harness behind the dash. Matches pretty well. Will I be able to use the super monitor that came in the 88 or should I just use the cluster out of my 87 w/ the clock?
Am I correct in the understanding that I should be able to pull the fuse box from the jz harness and just wire it into my ma70?
I take it rhen that the only difference from the 1jz & 2jz is a half liter and the turbos are actually twin instead of sequential.
While I have everyones attention; What exactly is this hydro fan and if I don't have one and I go electric, what fans should I get?

what contradictory opinions are you getting? is it regarding the wiring? Trust me, it is not that bad and complex. Others here who have done the swap will agree as well.

The best english manual for the 1jz is the toyota 2jz tsrm. You will find that the two engines share almost everything like torque specs and disassembly/reassembly procedures.

You can download a pdf 2jz tsrm on supraforums. And then there is the 1jz bible as well, but I don't think it's in english.

 

[JonoTurbo]

yes. differing opinions as far as wiring. Some say that ther is an adapter. which I assume it is just adapter plugs that are jz on harness end and 7m on the dashor engine end.(can't seem to find one or a price)!
Then some say extend the harness and some don't. What I am trying to do is whatever the easiest way is, but not sacrificing quality or have somthing that looks jerry rigged.
I pulled out my dash and matched up the layout of the harness behind the dash. Matches pretty well. Will I be able to use the super monitor that came in the 88 or should I just use the cluster out of my 87 w/ the clock?
Am I correct in the understanding that I should be able to pull the fuse box from the jz harness and just wire it into my ma70?
I take it rhen that the only difference from the 1jz & 2jz is a half liter and the turbos are actually twin instead of sequential.
While I have everyones attention; What exactly is this hydro fan and if I don't have one and I go electric, what fans should I get?

You can get an adapter harness from driftmotion as mattjk said. Basically you send them part of your 7m engine harness and part of the dash harness from the 1jz clip and they wire it up for you so it's plug and play. Costs about $100 plus shipping IIRC. As far as extending the harness, you don't have to do it if you route it through the speedometer cable hole(which you would have to cut wider).

For the fuse box you can open up the bottom of the jz fuse box and just pull out the whole section that you need and then put it into the 7m box with minimal wiring required. There's definitely a writup about it somehere on here.

For the fans if you don't go hydro you can switch to a 2j water pump and do clutch fan, or electric as you said. I don't know what to suggest for electric fans.

Edit: for the adapter harness call driftmotion, #'s on are their website: www.driftmotion.com

 

[Ken]

this is what I suggest for you seeing that you don't have a front clip.

get a 2.5" holesaw and enlarge the hole where the speedometer cable goes. deburr the hole and run your harness through. that solves not having to extend the harness.


now, you can run the harness behind the radio. it will reach to the stock location. personally, i made a metal case (to protect the ecu) and relocated my ecu under the carpet on the driver's side.

you can either cut into your 1jz harness to adapt the 3 dash connectors or you can purchase the adapter harness from driftmotion or wherever. If you are strapped for time, just cut off the 3 dash connectors from your 7m engine harness, cut off the 3 dash connectors from your 1jz harness, and splice the wires from the 7m to the 1j harness. that way you will be using 7m dash connectors on the 1j harness. this allows you to be able to plug into the MA70 dash harness. I suggest using the heat shrink crimp connectors instead of soldering.


now for the fusebox. the fusebox connector on your 1jz harness is a big grey square connector with 12 pins. you will be using 9 out of the 12 pins, 8/12 if you dont want a/c, 6/12 if you dont use the hydrofan or a/c.



look at 1jz-gte.us and supras.nl for instructions on where to switch out the wires.

 

[Divin' Devin]

Thanks,itr !! I'll Start on this this weekend and let you know how it goes. BTW , I do have the dash harness as well, should I use it or not?

this is what I suggest for you seeing that you don't have a front clip.

get a 2.5" holesaw and enlarge the hole where the speedometer cable goes. deburr the hole and run your harness through. that solves not having to extend the harness.


now, you can run the harness behind the radio. it will reach to the stock location. personally, i made a metal case (to protect the ecu) and relocated my ecu under the carpet on the driver's side.

you can either cut into your 1jz harness to adapt the 3 dash connectors or you can purchase the adapter harness from driftmotion or wherever. If you are strapped for time, just cut off the 3 dash connectors from your 7m engine harness, cut off the 3 dash connectors from your 1jz harness, and splice the wires from the 7m to the 1j harness. that way you will be using 7m dash connectors on the 1j harness. this allows you to be able to plug into the MA70 dash harness. I suggest using the heat shrink crimp connectors instead of soldering.


now for the fusebox. the fusebox connector on your 1jz harness is a big grey square connector with 12 pins. you will be using 9 out of the 12 pins, 8/12 if you dont want a/c, 6/12 if you dont use the hydrofan or a/c.



look at 1jz-gte.us and supras.nl for instructions on where to switch out the wires.

 

[Ken]

you don't need to use the jza70 dash harness, but you will need to cut off the 3 connectors from it that plug into your 1jz engine harness. that way you can make your own jumper harness for those 3 connectors.