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Location:
Perth, WA
Registered:
June 2003
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MZ11 Soarer - 1G-GTE Conversion
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Fri, 27 June 2003 11:28
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Hi, i am currently working on a MZ11 Soarer (81) at the moment, with the stock 5mgeu motor. The motor is stuffed, and i have dismantled most of it the past few days since ive purchased the car. I have sourced a 1G-GTE for the car, complete with ECU and wiring harness, turbo's and the lot.. going to pick it up 2moro. The only problem now is will my A43D Gearbox fit that motor? If not, does anyone know if i can bolt another supra box up to the motor and have it fit the tailshaft? Or do i have to change the lot? I can get a A340D i think it is.. gearbox relatively cheap, which i think came with the Z20 soarers and older supras. (Which bolted up to the 1G-GTE's). I know the 1G-GTE's arent the most powerful of motors, but i am currently looking at a 600x400x60 size tube and fin intercooler, and possibly a larger, single turbo (T3?), which would be mounted onto a custom exhaust manifold, with no cat (still looking at legalities of this)and a straight pipe to the rear with one muffler. With some larger injectors and a re-written chip... does anyone know of the performance gains i would expect to achieve? (Running at 12psi max for reliability reasons). Any help would be much appreciated.
Thanks
Nate
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Location:
NZ
Registered:
May 2003
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 06:01
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Hey there. I'm doing exactly the same conversion as you! Wow, cool.
So far I've got an 5MGE MZ11 and a 1GGTE and A340E from a GZ20. I used to have a manual GZ10 Soarer and the engine I have now would have been a straight and easy swap. But alas now I've got to do a bit of gear swapping over. I'm a bit unsure about the engine mounts but I've been told they share the same X members with the GZ10s. I guess I'll find out. If your gonna go auto then get a 1G bellhousing for the box cos it won't fit. If you're going manual then the bracket for the master cylinder's already there.
So far I've bought the engine, car, w55 'box(no bellhousing), everything for the clutch. Things I'm concerned about are driveshaft lengths, engine X member and pedal box. A manual GZ10 would have all these parts right there already, so if you're lucky enough to find one I suggest you grab it.
As far as performance mods go, I've got a custom built twin Garrett T25 manifold made up for me. Should flow up to 500hp but I'm only after 350hp or thereabouts. I'm hoping for twin pipes once the Garretts are on. Probably gonna run about 12psi on them. I think for now I'll just crank the CT12s up to 11psi if they aren't already. I'll see how it goes.
Stay in touch and tell me how you go with it.
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Location:
Perth, WA
Registered:
June 2003
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 06:46
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Cool, i will stay in touch  This is scaring me at the moment.. I have acquired a 1GEU motor, complete, (i already have the 1G-GTE sorta complete, without the wiring harness, and ecu, and the crank, but ill take that from the new motor im getting today)the problems that im facing now are:
1. Will the 1GEU bellhousing fit on the A34D box i have in there? I think thats the right code, stock 5m auto anyway. (Soarers (Z1's) came with 1GEU's stock.. so im thinking the box's would be the same'ish )
2. How much of a pain in the arse is it going to be to install a 1G-GTE "GA70 Supra" wiring harness into the car, but most of all, wtf am i going to get diagrams on how to hook up the computer and things to the dash, theyre from different year model cars.
3. What am i going to do about power steering and airconditioning, i guess i could sacrifice air cond, but id rather it be there, will it all fit on the 1GGTE block/head.. and will it all fit in my car?
4. And, are the bottom ends on the 1G motors the same? Except for the turbo ones of course, due to the lower compression ratio, but that is achieve through the pistons only isnt it?
Mods/things i am/have done to my car are..
2 x CT12 turbos, cleaned out and in good nick
Custom manifold to fit the two CT12's and the soarer's body shape. My dad's making all the steelwork for me, so there isnt much dollars spent there, thankgod!
Custom exhaust and dump pipes
Custom intake piping, with limited restriction, and pod filters on the turbos
VR4 Intercooler 430 x 200 x 60 (core size)
Boost control,  Gotta love it!
Probably also run 12psi.. if the turbos can take it, when they blow up, ill cut and reweld the manifold to increase size to fit on a T4  Lag central here we come.. 12 secs here we come too
I have all this already, i will have to make the manifold and exhaust when everything is on the car. 1/2 of the 5MGEU came out today, the other 1/2 should be all out by a week's time'ish... you never know with cars! I have about just under 3 weeks worth of holidays at the moment, so i want to do as much as possible when i have the time.
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 06:55
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1) The 1GEU auto bellhousing should fit to the 5MGE auto in theory. Should hold up to the power as well, but its not the smoothest of things. Methinks you should switch to a manual when you can
2) Providing you can get the wiring harness, it wouldn't be the hardest thing in the world to connect. It's fairly simple to remove the 5MGE wiring and it'd be a matter of tracing some of the wiring. I can help you out there because I guarantee it'll be similar to the Celica XX.
3) With the airconditioning you should be able to use the air-conditioning compressor from the 1GGTE (if its on there), you may have to get new piping made, but it can be made to work. The power steering should be able to be made to fit. You may have to move the resevoir, but its not the most complicated setup.
4) I know the 1GGTE doesn't use oil squirters, so its possible the block is the same as the turbo one.
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Location:
Perth, WA
Registered:
June 2003
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 07:16
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Ill get a manual later on, thats not too much of a problem at the moment, ill live without one. Im good electrical-wise.. so i guess that should prove to be TOO much of a problem (wiring harness.. finding one is going to be.. should i get a supra mk3 one, or a soarer z2 one? after all, the motor came from the supra.. a/c wasnt on the motor  ill live And, all i really need from the new block is the crank, so im sure that would be the same. Cool, im off to get the 1GEU now!
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 07:18
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You can buy my W57 and G-series bellhousing later on if ya want it
As for the wiring, you should try to get the Supra stuff. Which model is the engine?
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Location:
NZ
Registered:
May 2003
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 09:16
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Might have trouble with wiring cos there's a couple of types. All AFM though I think.
Have you put the engine in already? Do the turbos not fit inside the bay comfortably? I could be in trouble then. 
My friend is running a single T04E on his 1GGTE KP60 but he's planning to use a 1GGZE bottom end. Apparently it's better. I haven't asked why yet. Though here in NZ 1GGZEs are pretty scarce.
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Location:
Perth, WA
Registered:
June 2003
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Re: MZ11 Soarer - 1G-GTE Conversion
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Wed, 02 July 2003 14:17
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Ok, ive picked up the 1GEU motor and box. So now i have everything for the conversion, excluding throttle body, air flow meter, and wiring harness and computer.. well, i think thats everything
I havent put the motor in yet Undertow, its all sitting on the floor in front of it, i have only 1/2 of the 5mgeu pulled off so far.. all the manifolds etc will be pulled off 2moro if i can get around to it, i have to go to uni 2moro, and then exam on friday, so by monday, slowly slowly.. the 5mgeu should be able to be ripped outta there, and have the 1G-GTE fitted.. i think the only thing i need now also, OH CRAP! is engine mounts.. that sucks. the 1GEU came with some, but i think that is out of a celicasupra. Hmm.. *gulp* help..
justcallmefrank: The engine is from a MK3 supra. Does that matter? I have the wiring harness from the 1GEU.. just the motor's wiring harness section.. and have been told that theyre near identical to the 5mgeu's.. well, it sorta would be, being that the soarers came out with a 1GEU as the bottom of the line motor. Im not too sure about the turbos fitting in the bay yet either Undertow.. ill measure it up 2moro if i can get some time..
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