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Location:
Melbourne
Registered:
May 2004
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'94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 13:36
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Hi ppls,
I currently drive a NA 1994 Supra 5spd with your basic mods to exhaust, airfilter, suspension, piggy back S-AFC and a TRD LSD. I'm over the power of the NA. So I'd like to get a full TT front-cut (preferably 95+, 6 speed man, bigger brakes.. VVTi would be nice) and transfering all the bits and pieces over to make it something like a TT!
Has anyone here done anything like this before and know if I'd run into any problems? As far as I know:
-The driveshaft needs slight modification to fit?
-Engine mounts should be the same? (If not TRD ones should suffice)
-Are the tranny mounts the same?
-All the eletricals (ie dash climate control etc) should be the same?
-Can my current 2 pot fronts be transfered to my rears?
-Any problems/differences going from a 94 NA -> 95+ TT inparticular?
If anyone could help out with the questions above, that would be great. I suppose just as importantly, if anyone knows of any major difficulties in this process please let me know before I start throwing money at wreckers for a half-cut and more money to a mechanic to get what I want done.
I'm not very mechanically mind either, still trying to learn everything so please forgive me if I'm being a complete noob. All input appreciated.
Thanks!
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Location:
Lost in the K hole
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 13:39
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this is an asshole of a conversion!
i know itll sound harsh, but if youre serious, just sell the NA and buy the turbo.
a mate did this conversion and it was a major pain in the ass. i steered WELL clear of trying to help him with this one, so dont have details as to where the stumbling blocks were, but he lost a lot of hair and several kilos over it
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 13:48
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Really?.. Thats bad news 
Its just that I have mecahnics telling me they'll do all the labour for a set price and all I needed was a front cut, either they find it, or I bring it, they don't mind.
I just thought since the car is in the same family, it shouldn't be too hard. But I guess that was the wrong train of thought.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 13:51
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its not just the "getting the motor in" bit (thats easy)
its the "getting the motor running" - ie wiring etc that i think was a fucking nightmare (though he didnt have a front cut, just an engine + loom + ecu)
dont get me wrong, its certainly doable, but for the effort and price, just buy a factory turbo. then you dont have issues with insuring a modified vehicle also.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 13:53
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and that said, im sure someone else will have a differing opinion. that is just my 2c and is certainly not gospel 
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 14:10
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Hahaha.. Well as early stated, any input is appreciated!! So no hard feelings. 
Well the thing is, I'm not going to be the one worrying about the wiring and stuff as such. Theres a mechanic that claims to be an import Toyota/Lexus specialist in my area that will charge me a set price for the work.
Around the corner from this mechanic is a mechanic of a friend of mine (thats a mouthful), and his offering me something similar aswell.
They both seem fairly confident when I told them what I wanted, but I still don't know them enough or really seen much of their work to say I really trust them. So HENCE thats why I'm here trying to any opinions.
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Location:
Melbourne, Australia
Registered:
July 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 14:16
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Just out of curiousity, what is the set price? I mean that will help tell whether the conversion is viable or not 
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Location:
Brisbane
Registered:
July 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 22:42
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id say it would depend on just how good your non turbo one is condition wise.. if its bloody awesome then I would say go with the conversion.
as far as mechanically it should all bolt in.. and to save on wiring troubles, why not go an aftermarket ecu?
but also it depends on said "set price"
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Location:
Brisbane
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 23:00
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As a veteran of quite a few engine conversions, let me tell you engine conversions are a huge PITA and should be avoided. It can be worthwhile if you're getting something unique out of it (eg 2JZ-GTE into a 84 Supra), but if you just wind up with another 94 TT Supra, what's the point? Just buy a 94 TT Supra and be done with it!
My 2c.
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Location:
Brisbane
Registered:
July 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 23:07
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norbie thinks well.. atleas that way ur not waiting for 6 weeks for a mechanic to finish ur conversion
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Sun, 30 May 2004 23:35
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I'm with the others - unless you can do this yourself, sell up and buy a late 97 - 98 Supra turbo. I have the wiring diagrams for a VVTi 2JZGE - if the 2JZGTE is anywhere near as complex then I'd be scared. This comes with the VVTi motor and all the other bells and whistles that the late TT has and an early NA does not.
The wiring is a major PITA. You get the small brakes and the crappy LSD (if you have one at all), no factory boost guage. You just end up with a late model car that has been bodged up.
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 00:12
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As for set prices go, one said $2000 the other said $1500.
So if the price of the front cut was good, I was really thinking I had a deal at hand...
I'd love to just buy a TT, but I this felt cheaper overall if it worked.
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Registered:
August 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 00:19
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| Eiji wrote on Mon, 31 May 2004 10:12 |
As for set prices go, one said $2000 the other said $1500.
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Location:
Lost in the K hole
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 00:39
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| Eiji wrote on Mon, 31 May 2004 10:12 |
As for set prices go, one said $2000 the other said $1500.
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there's not a chance in hell of it costing that little.
none, zero, zilch, nada
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Location:
Brisbane
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 01:11
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Agreed x 10. Even if you did the conversion yourself in your own back yard, it would still cost more than that.
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 02:32
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Yep while I will agree those labour prices are rediculous for a true mechanical workshop, I think the swap has feasablity. In a halfcut you get all the wiring, componentry, dash and fittings to do a simple swap over job provided you buy the same model halfcut as your car (ie JZA80 Supra halfcut). I have a feeling your rear wiring harness will simply plug into place on the distribution boards in the kick panels, so if it is considerably cheaper than trading your NA Supra on a turbo jobbie, I'd look seriously at it.
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Location:
Brisbane
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 03:34
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Don't forget he'll have to swap in a TT diff or he'll be left with ludicrously low gearing. The 6-speed has a 3.2:1 final drive ratio, while the 5-speed is 4.0:1. And from what I've read, swapping the diff isn't a trivial exercise (different driveshaft lengths etc).
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 07:30
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True, fortunately I know where there's a TT JZA80 complete rear cradle sitting in a car, just a simply case of removing the ten bolts to undo it! Food for thought!
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Location:
Lost in the K hole
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 07:38
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clint - dont suppose it has rear calipers bolted to it? twin piston?
if so, and you can separate them for sale, please PM me
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 08:01
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Yeah I agree the price err.. kinda low, but the concern right now is the mechanic aspect of it all so lets put aside that, for now
Regarding the tailshafts and diffs.. I fail to understand how the diff effects the final drive ratios. Is it possible someone can give me a crash course here? Or perhaps a URL explaining this. I always thought the gearbox had all the ratios.. (Sorry, I'm noob  )
With the tailshafts, are the NA and TT's different lengths?
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 08:14
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| Eiji wrote on Mon, 31 May 2004 18:01 |
Yeah I agree the price err.. kinda low, but the concern right now is the mechanic aspect of it all so lets put aside that, for now
Regarding the tailshafts and diffs.. I fail to understand how the diff effects the final drive ratios. Is it possible someone can give me a crash course here? Or perhaps a URL explaining this. I always thought the gearbox had all the ratios.. (Sorry, I'm noob )
With the tailshafts, are the NA and TT's different lengths?
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Here's a shit load of info 
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Location:
Brisbane
Registered:
June 2003
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 08:18
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do you have the 1/2 cut yet? im interested in the brakes/ struts if you can name a price?
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 10:11
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haha thanks rvrolla
V8_MA61: Nopes, no 1/2 cut yet.. Still assessing the situation. If I do decide to go ahead tho, the bigger brakes will be fitted into my car and my fronts will go into my rears (if that works?). Struts you can have if it goes ahead
At this rate however, its going to be a LONG time. Lots of learning to do
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Location:
Brisbane
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Mon, 31 May 2004 12:55
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JZA80's have double-wishbone suspension. Good luck finding the struts!
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Location:
Melbourne
Registered:
May 2004
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Tue, 01 June 2004 01:27
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Looks like the diff part of all this is causing too big of a headache . So the verdict: I've been convinced to NOT go ahead with this no more. I'll just save up a bit more, hopefully get a good price for my car and buy a fresh TT to work on. Thanks for the input guys!
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: '94 Supra 2JZ-GE -> '95+ Supra 2JZ-GTE Conversion - HELP!
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Tue, 01 June 2004 02:03
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There's a '97 VVTi TT for 38500 in the cars for sale section.
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