2JZGE JZA80 auto info

[levinte27]

I am looking for an auto gearbox to go behind a 2JZGE manual engine i have just purchaced.
As it is a manual the computer will not run an electronic gearbox.
So I am looling for an auto gearbox that is run by its own computer or one that does not use a computer, to fit behind a 2JZGE.
I will also need a flex plate and torque convertor.
I am willing to swap bellhousing or even use an adaptor or custom bellhousing.
Any help with gearboxes and the cars they are from is appriciated.

Philip

[CrUZida]

You'll be much much better off buying an auto 2jzge with loom/ecu and selling the manual one (or doing a straight swap).

Putting an auto box on a manual engine is not an easy task, as the amount of things you'll have to buy make it a financial nightmare.

[andrew_mx83]

there is a supra/soarer/crown A34x that has a separate computer. have a search around it came up a couple of times recently.

[Norbie]

MA70's have an A340 with separate ECT module. You could make it work but it's far from trivial - definitely get an auto ECU/loom if possible.

[andrew_mx83]

thats the one good work norbie.


auto ecu & loom ftw tho


or a suprastick to drive the auto

[RA35GT]

There are some wires from the engine ecu required to make the ECT work properly as well. (These wires aren't on the manual ecu's usually, you could build a box to replicate it) (Talking MA70 here, not sure on later ones)

So another vote for getting an auto loom and ecu.

[amichie]

What about a supra stick? Unless its the one with the solenoid controlled pressure regulator it should work.

[CLG]

If you decide to go the factory ECU route:

My experience with 2JZGE's and their corresponding auotmatic transmissions is that the JZA80 Supra auto is unique to any other auto fitted behind a 2JZGE, in any other vehicle. The auto trans found in the JZA80 use a 3 pin solenoid plug (as found on the left rear area of the transmission), while all other transmissions I've seen from 2JZGE's run an 8 pin solenoid plug. I believe the 3 pin plug is an older production feature, as you also find this arrangment on transmission fitted to previous model motors too (JZA70, MZ20, ..., and so on - ie anything fitted with an A340LE transmission), while the 8 pin plug is fitted to vehicles produced after that (Celsior, Crown, ..., approximately 1992ish onwards).

what does this mean for you?:

I think you'll need to match the transmission, wiring loom and ECU to the same vehicle, ie all from a JZA80 Supra, or JZS131 Crown, ..., to have any chance of running an install that will work and be hassle free?!?

I have no knowledge of the deifferences between the 3 and 8 pin solenoid plugs - I've never need to research it personally. Having said that, I have several 8 pin JZ transmissions here, with wiring looms, but not ECU's, and several JZA80 wiring looms and ECU's but no transmissions to suit. If you can find out the differences, we may be able to wheel and deal to see your problem resolved?

Anyone with direct, first hand knowledge of the solenoid plug differences and their requirements, please feel free to chime in!?!


Clint

[levinte27]

Thanks for all the info guys it is much appreciated.

Clint, Would you be able to tell me which cars the 8pin box and looms are from as i have seen auto ecu's at a number of importer but need to know which car to get it from.
Also do you have matching flex plate and convertor and will I need any thing else to get it all going?

Sorry for my ignorance but what is a supra stick?

Philip

[CLG]

A "supra stick" is an aftermarket transmission controller.

The boxes with the 8 pin solenoid plugs are referred to as "Aristo" transmissions sometimes, though I'm not sure of model designation. I also have a trans from a Crown here too, as it came attached to a 2JZGE with true mid sump - that would make the model designation JZS133/JZS135, or JZS143/JZS145. Regardless, you'll need to match the ECU to the transmission you wind up with.

I have flexplates with flywheel bolts and factory spacer brackets, along with bellhousings and torque convertors matched to their original fitment transmissions, and some shifter rods, kick down/pressure modulator cables, and tailshaft yokes - will send you a PM.

some reference pics for your album:

A group of JZA80/ older style 3 pin solenoid plugs


A group of "Aristo"/later model 6 and 8 pin solenoid plugs


A late model 3040LE transmission showing 6 pin solenoid plug at left rear of box, and manual pressure modulator cable


A later model 3050LE (5 speed auto) transmission showing 8 pin solenoid plug at left rear of box, and electronic pressure modulator cable (grey plug midway along the LHS of the transmission)



Remember - some people will call the pressure modulation cable a "kickdown cable" while we're talking about the same thing in layman's terms, they are apparently differnet in their application?!? My knowledge in this area is limited - someone with more smarts than me, needs to chime in here!?!

[CLG]

And some more pics of the internals of a A3042LE transmission - my memory tells me this was actually a trans from a 1UZFE, but they're basically the same box I believe?!

Pan Removed from an A3042LE:


Solenoids and wiring loom to 6 pin plug:


Filter, valve body, and solenoids removed to show "valves" along the top of the box, one on the left, 3 on the right:


Right hand "valves" removed from their housings:

[levinte27]

I have found a Auto box from a JZA80 turbo, will this work with the non turbo ecu and loom?

[CLG]

I think the turbo box not only uses the 6/8pin solenoid plug, but it also has a sealed output shaft incorporating a donut connection, unlike the non turbo box which uses the 3 pin plug and slip yoke style output shaft. I'd also reserve judgement on the shift pattern/pressures/points suiting the non turbo motor as it has less torque to deal with too.

Note - in an attempt to be factual about this subject, my information is only based on passing comments etal - please double check the box yourself, and let us know if it is correct or not?

[sleepercorty]

find an early a340 gearbox with 3 wire plug and cable controlled line pressure, and wire it up like this no computer needed for auto. then you should be able to use the manual computer just to run the engine. hope it helps

http://www.toymods.net/forums/showthread.php?t=54880

[levinte27]

Thanks for the info.
Is a JZA80 auto a 3 wire plug and cable controlled line pressure, as I have found one of these.
Also where as the wires going to solenoids. Is this from the auto shifter if so I with have to intergrate this into my column shift somehow.
What neutral safety switch will I need to get as the cae is a manual atm.
Philip