2jz swap in 91 mk3

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supra420

New Member
Jan 9, 2007
3
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houston, tx
was looking into the 2jz swap and was looking up information on it... how hard is it to get the 2jz 6-speed in the mk3? and why isn't there anyone doing it? was just curious. also, would the car be quicker with the 6-speed or a r-154 ? I intend to keep the twin-turbo setup for a lil while but plan on going with a big single in the future.. any input would be greatly apreciated.
car will eventually be running around the 700hp mark. will the r-154 or 6-speed hold more power in stock form?
I figure with the twin turbo setup the 5-speed would probly be a little quicker but with a big single there would be more lag? correct me if im wrong.
 
tsuper92

tsuper92

supra addict
Apr 7, 2005
1,376
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mass
the getrag six speed will fit with custom trans mount and driveshaft.you will want to change the diff gearing and find a converter for the speedo drive(electric to mechanical).most people wouldn't bother with the swap because there power goal doesn't justify the price.
used getrag's go for $2500 ballpark price from what i've seen.a nice clutch like tilton triple is $4000,more then the blue book on the car.
if i found a deal on the trans,i would go for it.the power people are putting through them is insane.
 
The Reaper

The Reaper

Single, and lovin' it!!
Jan 10, 2006
1,909
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Florida
the 6 speed does fit but all it really does is make the R154's 3rd gear into two seperate gears as they are shorter. the v160 will hold pretty much anything you throw at it.....read up on it
 
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supra420

New Member
Jan 9, 2007
3
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houston, tx
Thanx for the info guys. tom at sgp racing has a guy that goes to japan and gets the front clips. again, the car is gonna be a lightly modified stock twin turbo setup guessing around 400-450rwhp for awile. Iv got a few other projects Im in the middle of also, so the single turbo and high #'s are gonna have to wait a few months. I'll of course go through everything at that time before i start cranking the #'s... Mainly was just curious about the 6-speed. Havnt had any experience with it.. I know all about what a w-58 or r-154 can do.
 
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Satan

Supramania Contributor
Mar 31, 2005
1,594
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Tampa
Most of the high HP MKIVs go with the 400 auto (?).... the 6 speed can hold it's own, but for the ~$2500+ (more like $3K) plus custom driveshaft, many of the MKIII guys can go thru quite a few R154s. No high costs or modifications required... using the 1JZ bellhousing and stock driveshaft anyways.
 
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Satan

Supramania Contributor
Mar 31, 2005
1,594
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Tampa
...I have to look it up. I believe it's a built "domestic" tranny...TH400? I just remember seeing about the MKIV guys dumping the auto and 6 speed for it, to run on the track, etc

I may be way off... you'd have to search on the MKIV sites for more info.
 
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supra420

New Member
Jan 9, 2007
3
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houston, tx
thats nuts! I used to have a ls1 with the t56 6 speed... Have known friends that have grenaded them.. and not pushing anywhere near the #'s that the majority of these supra's are pushing... The vipers have a beefed up version of it in there cars. But were still not talking some of the crazyness iv seen stock trannys in supras take.. not to mention that the only other "rear-ends" that iv seen take as much abuse as a "stock" supra's would have to be a ford 9" or dana 60... wich both of those are super heavy!
In my own opinion, everything that toyota put into the supra is some of the strongest parts known in any vehicle and to swap them out with chevy or any other parts would just be going backwords..
If i were to do anything it would just be rebuild what toyota already put in it with even stronger/better material if possible, if not just freshen it up.. Iv seen tons of the stock tranny's running around in these 400-500+hp supras have over 100k miles on them...
Id like to see a t56 with 130k miles on it in stock form hold that for a few passes with some good sticky dr's or slicks... if nothing else, it would surely grenade 3rd gear atleast...hell... now that i think of it, Id just like to see a t56 that is still in the same car for 130k miles with anywhere near that power..??
sorry, kinda rambling off subject but i just dont see the justice in swapping parts with weaker ones..?? might be cheaper but will be more expensive in the long run..thanx guys, but Ill keep the yota's goods in the yota:) let all the ford and chevy guys swap each other's crap out with one another...lol :1zhelp:
 
tturnpaw

tturnpaw

Supra Enthusiast
Feb 10, 2007
412
0
0
Everett, WA
powerglides, Turbo 400s and 350s can all be easily built to handle 1500whp. Powerglides can hold that i believe unmodified. Of course, they are also a 2 speed and very boring. If you dont abuse it too bad, most anything can hold a large amount of power.
 
MidShipCivic

MidShipCivic

Honda/Nissan/Mitsubishi
Sep 19, 2005
116
0
0
Orlando Florida
A a 5.7 8, 8 liter v10 produces torque much differentley than a 3 liter 6 .


Yeah you've seen Mk4's do it they never post it up when it breaks... it happens.
 
tturnpaw

tturnpaw

Supra Enthusiast
Feb 10, 2007
412
0
0
Everett, WA
thats because theres no point in stating the obvious....ya i broke my diff cause i have too much power. Its a little dull, and noone really cares.
 
MidShipCivic

MidShipCivic

Honda/Nissan/Mitsubishi
Sep 19, 2005
116
0
0
Orlando Florida
tturnpaw said:
thats because theres no point in stating the obvious....ya i broke my diff cause i have too much power. Its a little dull, and noone really cares.
Click to expand...


All I'm hearing is Hp break this and that. Hp doesnt break anything, torque does.
 
tturnpaw

tturnpaw

Supra Enthusiast
Feb 10, 2007
412
0
0
Everett, WA
thats obvious, but how many ppl do you know state their toque numbers when they break things? exactly
MidShipCivic said:
All I'm hearing is Hp break this and that. Hp doesnt break anything, torque does.
Click to expand...
 
Evilempire1.3JZ-GTE

Evilempire1.3JZ-GTE

SF what a waste of supras
Jun 22, 2006
1,382
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SoCal
www.myspace.com
The V160 6 speed uses 3.20 rear diff

Less the 10 MKIIIs in the world came with this a 3.20 diff it was the Turbo Group A's used by totota to race. I dont know if it was a 8" or 9" diff or LSD for that matter. The next tallest gear ratio but easy to find for the MKIII is the 3.73 it is over 17% lower geared then what would be ideal for the MKIII making 6 speeds and the extra cost a waste.

If you really badly want to use the V160 and could find one for a good deal. spend the extra couple grand to squeeze the properly geared 9" stronger MKIV diff in our subframe and make custom axle half shafts also.
 
SupraClaou

SupraClaou

Supramania Contributor
Sep 1, 2006
846
4
18
Athens,Greece
Anyway guys. :icon_conf

Let's see...:nono:

Mk3's highest rear gear LSD is 3.7 which Toyota also used to the Turbo A
(88' model with the 7M-GTE, 270 hp).So there is no LSD which goes under 3.7 gearing for MA70 supra...and that only for the 5-speed! There is no
auto trans and 3.7 ! Highest LSD gearing for auto is 3.9 ...

The R-154 5 Speed manual trans which is used for the mk3 turbo model only
is Toyota's heavy duty trans!
It can hold up to 700 rwhp preety easy if the trans is healthy and in good
condition!!! For more hp output there must be a re-built R-154 trans, whith
some special forged and high endurance parts which cost a lot of money $$$.
And cryogenics technology can be used for +20 % increased strength of the
R-154 transmission!

So a 2JZ-GTE with 700 rwhp on MK3 can use the stock R-154 trans!
You can go with the 6-speed getrag trans but you'll need a custom driveshaft
and to get a 3.2 gear LSD of the mk4 supra turbo (or 3.1 LSD of the euro mk4
supra turbo) to go through the 6-speed ratios correctly. But all of these will
cost around 6000 $ to get them only,without the $$$ layboury to put them
on the car.
When you go with 2JZ-GTE twin or single turbo on the mk3,you just get a
1JZ bellhousing and a good clutch! No more then 1000 $ for both parts!!!

And another thing...when you have a moded 600-700 rwhp 2JZ-GTE swap
on a mk3 Supra with the 5-speed R-154 & 3.5 TRD Lsd, (taller gearing ,much stronger & better than stock) you got a rocket acceleration feeling :aigo:
Because with a moded 700 RWHP 2JZ-GTE you'll have up to 8200 rpm zone!
(8200 is a safe rpm zone for stock 2JZ block with performance cams,valve
train job,cam gears,head job)
Which means,that the R-154 5 speed will give you:
1st gear - up to 61 mph (98 km/h)
2nd gear - up to 105 mph (169 km/h)
3rd gear - up to 142 mph (229 km/h)
4th gear - up to 171 mph (275 km/h)
5th gear - up to 232 mph (373 km/h)
(5th gear of R-154 is overdrive with 0.75 gearing - while 6th gear on the
Getrag manual trans of the mk4 supra is shorter with 0.79...:icon_surp )
Above speeds are with 275-40/18' rear wheels

Not bad at all ehhhhh? :icon_bigg
And all that with less use of our right hand and rist on changing gears... :biglaugh:
 
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