A340E Differences?

[BJ91T]

I am looking for a list of the differences between the Non Turbo and the Turbo variants of the A340E auto found in mk3's. I have a NA auto in my shop and I plan to swap in a turbo 7M in the future I am just curious of any differences between the transmissions if there are in fact any at all. Just for reference the Car will be very mildly modified Pretty much a stock ct-26 with hard pipes, 3inch turbo back etc and possibly increased boost to 12-14 PSI. I plan to do the shim mod to the accumulators and run fresh OEM fluid as well. I do not see this car ever making over 350RWHP,




Thanks In Advance
BJ

 

[IJ.]

Shorter pistons in 2 locations and extra clutch discs in the GTE trans.

 

[TurboStreetCar]

Plan for a nice BIG cooler and thermostat if you want the automatic to last.

 

[BJ91T]

Thanks for the info Ian, I assume with the differences listed above that the GTE transmission will be a safer more reliable unit to use even for the basically stock engine? Also Are the tail shaft (drive shaft) splines the same?


Thanks Again
BJ

 

[IJ.]

In and out shafts are the same, you can machine the GE pistons if you have access to a lathe and you can also add more discs in the 2nd gear brake clutch buy substituting some thin plates in place of the stock thick ones.

I've just finished the rebuild on mine there are a bunch of pics on the last 2 pages of my pics thread.

 

[SideWinderGX]

Bumping this thread because its a bit pertinent: are the torque converters the same between the NA and turbo transmissions? I could imagine the stall speed being a bit different, but I need to send in a TC to get stalled anyways so that should be a non-issue.

Also, good to know the in and outs are the same that way the splines for the TC are the same.

 

[vilnis29]

who know what is Differences from Supra A340e and Cressida A340e??

 

[vilnis29]

So i found some differences, look at pictures

Supra gearbox have 4 wire connector


Cressida gearbox have 3


Speed sensor w/o ABS (Cressida)


Speed sensor w/ ABS (Supra)


So i have idea when i can swap just Extension housing and swap Valve body from Supra gearbox to Cressida gearbox. But i dont know will it work or no? :icon_roll

 

[SideWinderGX]

are the torque converters the same between the NA and turbo transmissions?

Bumping, still curious. Besides stock stall speed of course.

 

[vilnis29]

so i found the problem. Problem was torque converter and oil pump damage. Both i taken from Cressida box, and put new oil seal to oil pump, BUT oil is leaking. What ideas WHY?

 

[JDMMA70]

Any idea what was different on the internals of the JZA70 and 1JZ Soarer A340 besides using a different TC?