Strength Of the Soarer 1JZ Auto

[TasCressida]

it will be funny 1JZ rolla lol.
i will call it my testing a standard auto.
got keep my self occupied some how lol

[Stomps]

dude, id hate to be the bearer of bad news, but it sounds as if this car is your daily (you need it to get around)

im gonna be public enemy #1 here and say that maybe the issue your having is that you cant afford to run a car like this on a daily basis.

cheap fast reliable, pick two, rings true here, i think the mistake you made was getting your DAILY driven car retuned to 400rwhp, not the strength of the box.

turn your boost down, get a box built in the mean time, and you wont have a weird feeling in your gut of worry everytime you put your foot down.

theres no way in flying pigshit hell a standard auto will survive at 400rwhp.

hey... it depends on how you treat/serivce the box..

im fairly sure that these autos are the same as behind the jza80..

Mez has been making over 400hp for fucking ages and the auto box has no problems.. having said that, its serviced regularly ad very well looked after..

another solution is just to grow a pair and get a r154 behind there autos are for girls

Stomps

[Endless]

Safe limit i have been sold by MV is 260rwkw/350rwhp and that is when the box is fitted with one of their modified valve bodies & of course an aftermarket oil cooler - which is essential once running the modified valve body due to the extra heat.

[1JZ-Rolla]

& of course an aftermarket oil cooler - which is essential once running the modified valve body due to the extra heat.

Yes, a good oil cooler is critical, but not because of the valve body, as the shift kit will actually mean less heat produced, not more Just so happens though that most people fit a shift kit coinciding with mods for more power, and its the power put through the box that makes the heat. Higher stall torque converter also increases the heat generated by a large amount.

[TasCressida]

thanks for the comment guys.

spoke to mike. going a stage 2 box which he says will be more than enough for it.
and a large stall.

will be sending it off in 3 weeks hopefully...... time to bite the bullet.


prob a silly question but who could i talk to about getting a plan/outlay for an ANDRA spec cage in an MX83.
being in tassie makes it hard. i wanna give my guy a plan of some sort as it hasnt been done here before.
i know most prob wont share as its prob a patent thing.

cheers

[EldarO]

hey... it depends on how you treat/serivce the box..

im fairly sure that these autos are the same as behind the jza80..

Mez has been making over 400hp for fucking ages and the auto box has no problems.. having said that, its serviced regularly ad very well looked after..

another solution is just to grow a pair and get a r154 behind there autos are for girls

Stomps

course it depends how you treat the box, but at the end of the day, when your smashing that much power through something that isnt actually connected to the rear wheels, physically, all your internals are going to be pushed to breaking point, obviously.

im just saying, standard boxes take the power that standard motors make, for the most part, you upgrade the motor, upgrade the box.

its like getting a 400rwhp motor+box combo, and complaining that you have no traction on the original 185's the car came with.

[Stomps]

hey, I agree.. 400 horse through a stock auto is silly, but just saying it can be done.. From memory Mez did have a fuck off trans cooler on it..

I'd also be curious to see how much power you lose through a stock auto.. My car feels massively faster with the 154.. Taking it to get dynoed soon to see if there is any actual hp difference when the rest of the car is the same..

Stomps

[Z2TT]

hey... it depends on how you treat/serivce the box..

im fairly sure that these autos are the same as behind the jza80..

Mez has been making over 400hp for fucking ages and the auto box has no problems.. having said that, its serviced regularly ad very well looked after..

another solution is just to grow a pair and get a r154 behind there autos are for girls

Stomps

Isn't the JZA80 TT Auto box is different, here is some information on it from supras.co.nz, says that the mkiv TT boxes can handle 350rwkw.

The TT Auto gearbox (A340E) is a very strong auto, but it can break if you are running over 350rwkw especially if drag racing with sticky tires. This auto is unique to the 2JZ-GTE engine, despite many other Toyota autos also being labelled as A340E autos. It has one extra clutch pack, a larger oil sump and a different torque convertor to the NA auto. The 350rwkw limit is well below the limit of the Getrag 6 spd gearbox (around 500rwkw), so if you are making serious power, make sure you are using the Getrag box. The W58 5 speed that comes with the non-turbo 2JZ-GE engine can only take around 260rwkw before it will break especially if drag racing with sticky tires. The 2JZ-GE auto can only safely handle around 200rwkw.

You can make the TT auto box survive longer if you manually change gears when you race it, as this puts most of the torque loading during gear changes through a stronger part of the auto. Also you can get the solonoids upgraded so that it changes gear faster, as this reduces the loading on the auto during gear changes. This will allow for up to 350 rwkw. For it to survive beyond that, you will need very expensive strengthening of internal parts that is offered by several USA Auto transmission companies. When suitably strengthened (at much cost) the auto gearbox can then handle as much power as the Getrag does.

[TasCressida]

according to my tuner doing research for a bit ..... u lose 26.2% of the total rw figure throught a toyota spec a3040L.

the holden version is a bit less. only 23.5 %

these are based on stock auto gearboxes and convertors. as mine is. the VL commodre with the A3 auto box made 1kw difference when it was converted to 5 speed. from the lower figure due to automatic + percentage loss added.....compared to it being converted to manual with same ratios.
so it seems right to me. and person at toyota quoted facts the JZZ30 box.


just my 2c

[Dieseltrain]

I know Turbo1J is still runnin stock box with Shift kit + Cooler . They just made 360+rwkw with it and its still in tact .

What type of fluid have you been running in the boxes ???

[Stomps]

Isn't the JZA80 TT Auto box is different, here is some information on it from supras.co.nz, says that the mkiv TT boxes can handle 350rwkw.

ha.. i didnt know that... i was fairly sure they were the same, but i gues not
to be honest i know 2 things about autos..

1. they are boring as batshit to drive
2. they are heavy as fuck and a PITA to remove while doing a manual conversion..

Tas- thats hell interesting..only 1kw difference... i certainly hope i pick up more than 1kw next time i go on the dyno..

Stomps.

[EldarO]

ha.. i didnt know that... i was fairly sure they were the same, but i gues not
to be honest i know 2 things about autos..

1. they are boring as batshit to drive
2. they are heavy as fuck and a PITA to remove while doing a manual conversion..

Tas- thats hell interesting..only 1kw difference... i certainly hope i pick up more than 1kw next time i go on the dyno..

Stomps.

this is an issue in the: "Tech and Conversions" section of the site.

[2jzhilux]

While everyone is here taking about a340s i have a question.
I just bought a MV autos spragless a341e and am going to fit it to the back of my 2jz which came with an aristo box on the back of it.
To achieve this will i just have to use a 1jz flex plate and use the 1jz convertor.
Has anyone tried to hook up a kickdown cable to the 2jz throttle body or should i try to make a 1jz throttle body fit and hook the cable up to that.
Also are the rear gearbox mounts the same between a jza70 and aristo.

[Stomps]

this is an issue in the: "Tech and Conversions" section of the site.

true.. hence:

2. they are heavy as fuck and a PITA to remove while doing a manual conversion..

albeit, Mez has made ~550rwhp on a factory a340 box... only difference is it was from a 2j... maybe another avenue to pursue for those not wanting a MV kit..

Stomps

[TasCressida]

stomps.... u really have to have a drive of powerful car with the auto.
its incredible. i had the same view as yourself on the autos till just recently.
one ur on boost it stays on it all the way thru to top gear. constant boost on full throttle.
unlike with the manual dropping revs on gear changes and the engine etc having to create boost again.
and with the size of my turbo set up going manual would make the car shit.
would be laggy as hell.