The "Forbidden Swap"?

Midnight Dorifuta

Back in the Saddle
Jul 16, 2006
107
0
0
Monroe, New Jersey, United States
I've made a similar thread at the 'other' forum, but figured some people who go there don't frequent here and vice versa, so it doesn't hurt to ask in more places than one;

So check this out. I'm not a horsepower freak or anything and I am fairly content with the potency of my '87 Mk. III. I'd leave my car as is, however, it is developing what a few mechanics have deemed as an early case of rod knock, and the engine is probably on its way out. When it blows, it blows, it's just a bone-stock 7M-GE and not much harm done.


However, I would like to drop in a Toyota engine, preferably a straight-six, WITHOUT turbo, newer, and could maintain or even gain a few miles to the gallon (being a daily and all) with just a small touch of horsepower. Thus, I've stumbled across the 2JZ-GE.


My question is this; what differences are there in the 2JZ-GE between (1991? I think) and 2005? I'm saving up for one off the 'bay but it's from a 2005 Lexus IS300... aside from that hideous cover, is there anything else I'd need for a newer engine aside from the run-of-the-mill 1JZ bellhousing, custom engine mounts and such?


Oh, if it makes any difference; I'm running a W58. Perhaps I should seek a rebuilt R154...?
 

tsuper92

supra addict
Apr 7, 2005
1,376
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mass
that motor is vvti though.i don't think you'll be able to run your 7m harness like people are doing now.
 

tissimo

Stock is boring :(
Apr 5, 2005
4,238
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Melbourne, FL
98+ 2jzge have a VVTi head, and weaker internals (only can handle ~ 400whp). A VVTi 2jzge would be a PITA to wire in. but is doable. IMO a non-VVTi 2jzge would be a better choice
 

Midnight Dorifuta

Back in the Saddle
Jul 16, 2006
107
0
0
Monroe, New Jersey, United States
tsuper92;912295 said:
that motor is vvti though.i don't think you'll be able to run your 7m harness like people are doing now.

Is it plug-and-play? o_O I'm not HUGE into car electronics, but probably could navigate my way around a diagram.

Also, is my W58 question even a valid question? I don't know if a W58 would just bolt up to a 1JZ R154 bellhousing or not.
 

csnow

Matthew 6:33
Apr 5, 2005
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Palm Bay, FL
You can get a 2JZGE out of a SC for cheap. Go over to clublexus.com and you should have no trouble geting one. I agree, stay away from the vvti. I am not sure on the w58 bellhousing.
 

Midnight Dorifuta

Back in the Saddle
Jul 16, 2006
107
0
0
Monroe, New Jersey, United States
Thanks for the input, I'll have to snoop around, make some posts and familiarize myself with the community before I go HAY GUYS IM IN THE MARKET FOR A NEW ENJEN.:sarcasm:

I hope the wiring isn't too much of a bitch and I can keep my stock gauges, I really am trying to pursue a practical, low-budget 'upgrade' from the M series of engines, avoiding forced induction at all costs.:icon_bigg
 

AF1JZ

Almost civilian status...
Jun 26, 2006
3,109
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Fredericksburg, VA
I'll let you know this, I have the stock 2jzge in my IS300. It'll get up and go in the IS. But, the supra is over 200lbs heavier than the IS. So, it might make your supra slower.
 

Adrian98

Banned
Dec 19, 2006
182
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orange county
my 98 is vvt-i. they have "light weight" rods. don't be scared they can still handle 450hp. the vvt-i might be more to wire in but not having to use a distributor sure is nice. as for hp gain it's only 10-20hp but it is a much smother cover curve. I took out every N/A supra i ever raced, even 5 speed ones with exhaust. i think the only one that could have beaten me was my friend pushing just over 200rwhp with intake headers exhaust and a tune
 

thechori

supra-deprived
Oct 3, 2006
567
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houston
2JZGE > 7MGE anyday

keep us updated on everything, i am contemplating this route as well, but with the intent of eventually going NA-T on the 2JZ

(not anytime soon though :[ )
 

Quin

Trans killer
Dec 5, 2006
1,989
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Columbus, IN
NA MkIVs used W58s for the 5spds, IIRC. You should have no trouble finding a JZ bell housing for it. As said before, check clublexus for cheaper 2JZGEs

I think AF1JZ was thinking you had a 7MGTE
 

MKIIINA

Destroyer of Turbos
Mar 30, 2005
1,825
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Plano, TX
if you are pulling it out of an IS they had the w55 tranny in them and its pretty rare to find. we recently had a thread about this over on my.is trying to adapt the 2jz - w58 combo and it was determined to be difficult but possible (main problem was length of the shift linkage). I agree with AF1JZ that the 2jz works well in the IS but with an extra 2-300 lbs in the supra it wont be as happy. Might want to PM Satan on the boards as he had a 2jzgte vvti in his MA70 at one point before it started mixing oil and water...
 

Dan_Gyoba

Turbo Swapper
Aug 9, 2007
1,836
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Alberta
www.gyoba.com
For the JZ block to a 5 speed, you have 2 options.

1. W58 bellhousing (And probably transmission) from a NA Mk4. This is PROBABLY the best option, though I don't know if the shifter will end up in the correct place, and the driveshaft may not be the same. If the normak W58 will work, then the bellhousing IS the best (IMO) solution, if not, there's:

2. R154 from a JZA70. This will fit right in, and the shifter will come to exactly the correct location on the A70 chassis. In addition, there's a ready-to-go driveshaft for it, so you don't need to custom fabricate or frankenstein something. The downside is that it's more added weight, even if it is a stronger transmission. Some JZA70 parts will make the bolt-in of a 2JZ-GE easier for sure, so this might make sense that way, too.

Both of these options have ready-to-go flywheels, clutches, and parts for them should be easy to source.

Edit: As to the "strength" of the 2JZ-GE, well, it's more power and torque than the 7M-GE, so it won't be worse than the 7M. The extra mileage of the VVTi version would be a nice to have as well.
 

IRACEMYCOPCAR

HOLSET MAFIA HX52
Jan 27, 2008
88
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SOUTH CAROLINA
I would get a pre 96 engine/ecu, i would think obd1 would be easier to deal with, too bad you are so far away i know someone with several 2jzge's with auto tranny, ecu and wiring harness's just sitting around, he's selling them for $500 a set.
 

Quin

Trans killer
Dec 5, 2006
1,989
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Columbus, IN
Uh, same does not equal better.

It'd be more complicated to wire up for a small increase in fuel economy and the same power, with greater costs.