Automatic A340E Tech Questions

[Mr_Flawless]

Converter neck length for the pump, the depth from the top of the the neck to the stator and input splines in the converter, input shaft spline and stator spline lengths, and converter push (when the lockup in the converter engages), all have to be concidered as well when doing auto trans conversions. i seen a conversion done once on a A340 box, i think it was a 1uz box on a 1jz gte, and whilst the converter splines were the same the depths were wrong, and the converter was only running on 5 mm of the spline, it spat the shaft and the converter in less than a week. The spline depths/ lengths on shafts and coverters are different from 7m, 1j, 2j, 1uz and so on, depending on if its turbo, n/a etc. the conversions can be done but u just have to be careful and choose the right parts for the right job.

[AL510]

You can make a flange from an auto hilux or surf fit in place of the donut flange and then use the front section of a 4x4 hilux tailshaft with the slip joint in your tailshaft. this is what i did in a 1uz powered hilux.

cheers, Al.

[madmont]

You can make a flange from an auto hilux or surf fit in place of the donut flange and then use the front section of a 4x4 hilux tailshaft with the slip joint in your tailshaft. this is what i did in a 1uz powered hilux.

cheers, Al.

Auto Hilux A340H box NOT the surf box

[amichie]

OK I think this is now my Plan A.

Take a JZA80 A340E NA gearbox with a slip yoke. Swap in the MX83 ABS sensor and the I'm hoping the rest is plug and play.

Here is a pick of the JZA80 slip yoke.



This is the mx83



The solenoid connector is a little different but I'm hoping I can just swap the little wiring loom that goes from the gearbox casing and inside to the solenoids. I will find out a soon as I get time to whip the sump pans off and have a look.

I think in hindsight I would have been better off buying a JZA80 NA engine gearbox package and buying a front sump off someone on supraforums. Some of the supra guys do a NA to turbo conversion using an Aristo front cut. Then they need to off load a JZA80 NA engine and gearbox package and a front sump.

[madmont]

Here is what I did to mine
JZA80 box with MX83 extension housing and JZA80 speed sensor fitted in addition to MX83 sensor

[amichie]

This is sort of what I was planning. Was any machining required or was it all just a case of swapping parts around?

The Aristo uses a speed sensor up near the torque converter and a speed sensor near the rear driven off the helical gear. It doesn't have the abs type sensor at all. Fortunately the jza80 seems to have all three types. So it should keep the Aristo ECU happy and the mx83 ABS.

[madmont]

I do not know which JZA80 transmission you have but the one I had had a speed sensor for the ECU and a speedo sensor and no abs sensor. As you can see in my pictures I have machined additional grooves in the MX83 abs part for the JZA80 speed sensor and fitted the speed sensor to the MX83 housing. If you are a whiz with electronics maybe you can modify the signal from the abs sensor to emulate the speed sensor. My MX83 speedo sensor is driven off the worm gear in the picture