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Location:
Melbourne
Registered:
May 2002
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What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 03:14
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Well, motor and all those things obviously...but are there any little nitpicky things I may need??
I wont be doing this myself, but I want the mechanic who works on this to do it as quick as possible, so I want all the parts and other things I need to ensure I get it on the road.
I think mechanically, I'll be getting everything, but apparently I need a hydrolic water pump or something for the fan?? and an intercooler. How will a 1JZ run without a cooler as temporary??
Also, will wiring diagrams help my mechanic? Or does everything plug in and is straight forward?
I read that I may get problems with the wiring to my dash...so if I got a JZA70 dash + loom, would that help in not having to mod any wiring to my current one???
Like I said, I want this to be done smoothly and in a very short period so I wanna be prepared and not have to ring my mechanic after 4 weeks and he's saying he's trying to get so and so parts.
I've never done a conversion before so I'm really paranoid about having my car off the road. More so since my mate still has his s13 off the road for a conversion which started in June.
Any help would be greatly appreciated...even if its names of people who have done it...I just hope that its as smooth as putting a 1JZ in a MA70, for some reason I cant think why it wouldnt be the same.
Also, will the back end of my car matter?? I mean it's a single spinner and, I dunno what else...PLEASE HELP!!! 
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Location:
U.S.A
Registered:
July 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 03:45
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You need a mk3 1jz-gte front clip, any other options will take you 3+ months to complete.
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Location:
Newcastle, NSW, Australia
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 06:25
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Even with a Mk3 clip I'd still allow 3 months for mechanic to do it. Very few conversion places would get this job done under that.
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 06:40
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Why's it take so long??
My mechanic said it'll take 1 day to take my engine out and put the 1JZ in. Then 1 day to do the wiring and 1 day to service, tune it...
So he said 3 days...5 days tops.
I saw him just after reading these posts and he said he will never have a car sitting in his garage for 3 months.
Damn, I wont be getting a front clip either. Such thing as record time??
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 08:56
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Is it really necessary to get a cut??
Coz I cant see why it wouldnt work if I had the parts that came from a cut...??
I'm not sure, but would parts from my 1G be transferrable??? Like starter motor and I dunno what else...ignition stuff.
All I know with my mechanic, is that he only works on engine swaps, other mechanics do the day to day stuff...he doesnt do other things, so for him to say in and out in 3 days, I can kind of believe...but he said 3 days provided he doesnt have to get parts from wreckers or Toyota which is why I want to be prepared.
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 09:07
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From what I hear, getting a front cut is safest as the bits are EXACTLY in the position that they are meant to be in. If you don't use some of the parts (i.e. brakes, springs, shockies) I'm sure you can sell them off. Going front cut will save you heaps of time and money just from an intercooler point of view because you are coing to get all the hoses and the actual cooler itself. Starting out with a full custom cooler will already cost you 2-3 days of the car sitting in the intercooler shop. If you want to do it fast I think most people would advise front cut.
(Please free to post any disagreements)
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 09:17
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Couldnt I just get a stockie cooler for now???
I think i'll be getting all the piping.
hmmmm...I'm starting to have doubts on whether or not I should go ahead with it.
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I supported Toymods
Location:
Perth WA
Registered:
May 2002
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Location:
Brisbane
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 09:36
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Having done several engine conversions, I can't stress this enough:
Get a front cut!!!
The reasons may not seem obvious now, but I promise it will save you all manner of headaches later on. These are complex engines, so it's impossible to know for sure that you have ALL the parts you need to make it slot in easily. Just being able to see the new engine installed in an engine bay can be beneficial in itself!
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 09:54
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Looks like I gotta wait longer and get a front cut.
The guy I'll be getting it from said I'll have everything for a successful conversion, all I need is a hydraulic fan and cooler.
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Thu, 19 September 2002 11:25
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Okay, I just worked out...coz JAZE is selling JZA70 parts from his front cut, that if I get an engine package and buy all the things I dont have from him, will that work out?
Coz freight for a front cut is a fair bit and I dont have room for panels etc...Would it still work out that way? I mean I'll get all the mechanical and electrical bits, just not the panels.
Would this work?? Or still go the front clip??
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Location:
Newcastle, NSW, Australia
Registered:
May 2002
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Location:
U.S.A
Registered:
July 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 01:16
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check the last picture at the bottom : http://www.geocities.com/emf_supra/ecuwires.html
thats where your conversion will come to a pause for serveral days, maybe weeks, and posibly months if you don't have a front cut.
by the way, I did mine in 4 weeks(include weekends)with a jza70 front cut.
You can also go here http://www.geocities.com/emf_supra to check out the dyno numbers on my stock 1jz-gte.
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 01:46
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OMG, thats a shit load of wiring!!!
Guess everyones right, I will need a front cut. I've never done this before so please excuse my ignorance etc if any.
Grant, just wondering, do you modify wires so they are made to plug and play?? The only thing I can't do if I give u the job of sorting the wiring for me, is if you need my wiring loom from my existing engine.
I'll do what it takes to make my conversion hassle free and done in a couple days. So if wiring is going to be an issue, I want to make it as easy as possible for the mechanic to do, more or less to avoid stuffing up after being stressed out looking at all those wires.
EDIT: Also, with a conversion, do you have to replace the wiring from under the dash?? Coz thats where some of my alarm is and I just paid nearly $1000 to get that done.
[Updated on: Fri, 20 September 2002 01:48]
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Location:
U.S.A
Registered:
July 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 02:42
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| Quote: |
EDIT: Also, with a conversion, do you have to replace the wiring from under the dash?? Coz thats where some of my alarm is and I just paid nearly $1000 to get that done.
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No, and if it's after market alarm then you're ok, but if it's factory alarm then just keep your fingers croxx.
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 03:55
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Thanks....hey 666supra, how much of a pain in the ass was the wiring? How long did it take u etc??
I went to see my mechanic today and he said he can put the engine in, in a few hours...provided everything fits in right and no other parts are required. Then I told him the wiring was gonna be a cunt, and he said that if it's that much of a pain, he'll be getting an auto electrician to do it instead, which will cost me more but that'll be so he doesnt waste his time trying to figure things out.
So 666supra...if u could do it again, how long should the wiring take you??
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Location:
U.S.A
Registered:
July 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 05:33
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As you know, I have the 1/2 cut next to mine as I start swaping parts. The wiring I have to pretty much have to trace from end to end, that means I have to strip the 1/2 cut completely to get from A to B.
If I can do it again it should take about a couple hours (with the 1/2 cut next to mine).
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Registered:
September 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Fri, 20 September 2002 16:04
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Well, I just bought a 1JZ with the wiring harness. I could have gotten a frontcut but I didnt want to, simply because I didnt want to use any of the standard gear, i.e Transmission, Computer, Cooler, brakes etc
I got my engine for $900 with the wiring all attached. Im in the process of buying an Aftermarket computer, Intercooler, Flywheel, clutch, gearbox etc
If I had bought a frontcut I wouldnt have been using most of it anyway, and it would cost me $2500
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Sat, 21 September 2002 14:20
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Cool dude!!!
Tell me how that goes, so if I had to do another conversion, I could take your approach and perhaps get better results!!!
666supra...as ur in the US, did you have to modify the loom so that it would be longer since in the US it's LHD?? Well, I'm just assuming that all JZA's are RHD, but I could be terribly wrong. Also, is the wiring all clipped together so that u can pull the whole thing out and connect them on the other car??
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Location:
U.S.A
Registered:
July 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Sun, 22 September 2002 05:54
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666supra...as ur in the US, did you have to modify the loom so that it would be longer since in the US it's LHD?? Well, I'm just assuming that all JZA's are RHD, but I could be terribly wrong. Also, is the wiring all clipped together so that u can pull the whole thing out and connect them on the other car??
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Right, all 1jz are RHD.
Yes, the wiring is clipped but you only unplug at the ECU and some body wiring. dont unplug anything (wiring and hose) from the engine cause you will for get. Once the engine is out, do one thing at a time.
Good luck and be safe 
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Location:
Melbourne
Registered:
May 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Sun, 22 September 2002 08:15
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Thanks 666supra!!
So I guess if u had the front cut, and everythign was connected to the ECU...then would u hook the ecu up first and then pull out one trace of wires, and run it the same way u take it out? And u do that for all of them???
Sorry for sounding like a dummy, but when it comes to this, thats what I am!
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Registered:
September 2002
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Re: What will I need to put a 1JZGTE in a GA70???
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Sun, 22 September 2002 09:34
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hmmm...after having a think about it, I think I will use the standard ECU after all.
If I had the money now, I would go to an aftermarket ECU setup, as eventually I am planning to do big mods to the engine (arent we all). Im still glad I didnt get the halfcut though, I think the only thing I wouldve used other than the engine/ecu/loom/igniter would have been the radiator.
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