MKIII 1JZGTE Swap How To! Pic Heavy

[Travis89Turbo]

Now this is the part you have all been waiting for!!! The harness

Things you will need.
-Enough wire to extend the harness 18" i Cant remeber the exact size but I kno i got two sizes for the thick power wires.
The smaller gauge i used was bigger then most of the wires but i wasnt about to buy 30 diff sizes of wire! Now remeber you can Upsize wire but not downsize it! so Always go bigger not smaller!
-Soldering Iron (preferrably adjustable heat)
-Solder I used .028
-Solder flux.. Liquid is alot easier to deal with!
-Alcohol... to clean remaining flux from wires(its a corrosive)
-Heat shrink and lots of it!
-PRACTICE... Get comfortable with your soldering before starting.
-Heat gun for the heat shrink! I dont like using torches
-Its a good idea to have some solder removal wick!
-Anti wicking tweezers. you need two of them. http://cgi.ebay.com/2-Pc-Locking-STA...item35a7d14ab3

Some Pics

Now how i did it...Mainly for the ease of troubleshooting if ever needed and ease of assembling harness I separated harnes into 4 chunks of wires before cutting it.. carefully makin sure there is not multiple wires of the same color in the same bundle! then labled them 1-2-3-4 I labeled them twice with enough room to cut them in the middle.. that way when its cut both sections are labled. I also did each bundle in a different color of wire. and mad enote of what color is in which bundle.



Then ya cut it.


Now some people say to cut the harness at multiple location so it doesnt bundle up! but the fact is... it wont bundle if you solder correctly. Your solder connection should not be thicker then the wires insulater. I separated the bundles from each other and one bundle at a time i stripped the wires and slid on the heat shrink on all the wires so you dont forget one.



I labeled each and evry wire on the extension so i knew what it went to.. and i traced it when soldering to make sure i labeled it right!!! I didnt want to do this twice

[Travis89Turbo]

Then you start your soldering... i didnt take any pics of the anti wicking tweezers.


Then the first bundle completed. This is not it wrapped up completly if you twist it up how the factory does it is hardly noticable thatits been soldered


Three bundles complete with just the 4rth one left and all the signal wires from knock sensor/cam position/ crankshaft etc.


This is how i labeled the bundled wires like the crank sensor/cam etc etc



I then went back to the engine with the ecu plug end of the harness i just extended. to start soldering it back into 1 piece.. By this time you should be one hell of a soldering master! IIRC there is around 300 wires you solder!!

[Travis89Turbo]

Here is some pics of the harness soldered together!! It was a great feeling!



As you may kno the jza70 and ma70 use different plugs! I didnt want to cut my chassis plugs so i made these plug adapters for all plugs needing changed. This adapter goes from IH2 to C1 Ill attach a link with all diagrams they are even colored! it shows plug to plug.
http://1jz.com/tech/docs/wiring/

The wires hanging out the side are for A/C and the three tied together are for the Alternator which need to be soldered to chassis.




Here is the chassis cleaned up for the most part gettin ready for its new jz! I still spent abou 3 hrs after this pic was takin cleaning everything up! I like bein able to change my oil without gettin Lubed myself.


If you plan on runnin your AC Which i did cuz it gets hot down here! And nothing better then kicking someones ass while you AC is blowin on you in 105 weather. Your gonna have to pull this stud out that holds your ac compressor and replace it with a bolt cuz it hit the Top plate you have to take off the 7mgte ac compressor. You also have to notch out the powersteering bracket due to the bolt that holds the ac hoses on hit it! DO THIS BEFORE ENGINE IS IN CAR!

The stud that needs removed.

[Travis89Turbo]

Here is some of the bracket needing grinded.


you also need to grind the bolt down for the ac hose!


now your ready to drop the motor in!! Haha I wish it was that easy! It is a very tight fit! you have to take the ABS brake line cover off and separate the bottom line and tap it in about a 1/2" as it gets in the way of the back turbo!

Droppin her in! TIGHT FIT.



Finished pics!



here is the pics of where you hook up your ac wires! you only need the blue wire you unhook the blue wire out of the chassis plug under fuse box! Rememer when testin this that it has a low pressure switch so if your still out of refridgerant you wont get power to the ac magnet.

[Travis89Turbo]

Here are some more pics of the ps bracket that needs grinded for AC




And some pics of the ecu up in the glove box! fits like a glove


Pic of the emblem off of the JZA70


Here you can see how tight the jza70 IC fits in and why you need the front bumper brace you can see to the right!

[Travis89Turbo]

Thats all the typing I have in me for one day! As i remember stuff I will add to this and again if anyone else needs more info on anything please let me kno!

Travis

[91ma70]

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