Will a A341E fit onto a 7M?

[menace]

Guys,

My mechanic has a A341E sitting at his workshop and i'm just wondering if the bellhousing off my A340E would bolt onto the A341E?

My box is slipping when i gun it so i'm after a better auto for my MX83...

Thanks,
Dennis

[hamgatan]

yes...all bellhousings for A340E, A341E and A350E should be interchangeable.

[MS-75]

Call Mike at MV autos SA

08 8370 0430.

(Does the front of the A341 gearbox have a round section that plugs into the bellhousing? I ask as that is how the front of your A340 will look.)

Sean

[MacroP]

Please note, the V8 A341's have a different spline(finer spline from memory) count on the input shaft compared to a A340E. Other A341E's from other cars (like a JZX Chaser) may have the course or the fine spline, I don't know. The torque converter needs the right spline to fit on.

After that you have to worry about the valve body arrangement and whether this particular A341E you've seen has the simple 3 solenoid setup(like the MX83 has) or the more complex 4 solenoid setup like the V8 Soarer and LS400 boxes have.

Then, worry about the speed sensors on the output shaft and extension housing though if this A341E has a slip yoke type output then it's might be possible that they can be all swapped over from your box. The sensor outputs change a lot depending on the box type and car type ie mechanical vs electronic speedo, ABS present, etc etc. The 7M ECU for the MX83(series 2 only) needs a 4 pluse per rev speed sensor where as the later A341E's may have a 20 pulse per rev output for the "SP1" or "SPD" input to the ECU. The small SP2 speed sensor, also in the extension housing changed from a hall effect type(3 wire sensor) on the MX83 to a two wire magentic type sensor in later Toyota cars and are not directly compatible with each other. Also what model MX83 do you have? Is it a series 1(88-90) or series 2(90-93). The early one's have a mechanical speedo and the later one's a electronic speedo hence a 4 pulse per rev speed senosr input.

All this info I've fiqured out doing my 1UZ into MX83 conversion. Your idea is certainly do-able but a bit of research is needed.

Get me part number off the box and I can tell you it's origin. It's near the rear on the right hand side. A small metal blue plate with something like 35000-50xxx or something.

Good luck.

[hamgatan]

Please note, the V8 A341's have a different spline(finer spline from memory) count on the input shaft compared to a A340E. Other A341E's from other cars (like a JZX Chaser) may have the course or the fine spline, I don't know. The torque converter needs the right spline to fit on.

After that you have to worry about the valve body arrangement and whether this particular A341E you've seen has the simple 3 solenoid setup(like the MX83 has) or the more complex 4 solenoid setup like the V8 Soarer and LS400 boxes have.

Then, worry about the speed sensors on the output shaft and extension housing though if this A341E has a slip yoke type output then it's might be possible that they can be all swapped over from your box. The sensor outputs change a lot depending on the box type and car type ie mechanical vs electronic speedo, ABS present, etc etc. The 7M ECU for the MX83(series 2 only) needs a 4 pluse per rev speed sensor where as the later A341E's may have a 20 pulse per rev output for the "SP1" or "SPD" input to the ECU. The small SP2 speed sensor, also in the extension housing changed from a hall effect type(3 wire sensor) on the MX83 to a two wire magentic type sensor in later Toyota cars and are not directly compatible with each other. Also what model MX83 do you have? Is it a series 1(88-90) or series 2(90-93). The early one's have a mechanical speedo and the later one's a electronic speedo hence a 4 pulse per rev speed senosr input.

All this info I've fiqured out doing my 1UZ into MX83 conversion. You ides is certainly do-able but a bit of research is needed.

Get me part number off the box and I can tell you it's origin. It's near the rear on the right hand side. A small metal blue plate with something like 35000-50xxx or something.

Good luck.

the man speaks the truth.

if its a Soarer/Celsior A341E it will most definitely have a different solenoid setup and torque converter may also be a heavy factor to consider.. the bellhousing will fit, but you will still need to do everything listed above

[menace]

Hey,

Thanks for the awesome reply. I've got a series 2 Glx Cressi. The auto i'm looking at is from a Soarer, it was sitting behind a 1J...

So i guess it wouldn't be worth while....?

I will try and get a part number on Monday.

[MacroP]

JZ Soarer's up to 96 have the simple 3 solenoid valve body setup which is compatible with your 7M ecu though some simple wiring mod is needed, I can explain later.

The output shaft is a slip yoke type which is another bonus. I've checked also that this box shares the same output shaft as your cressida box which means no tail shaft mod. The extension housing and bits inside would most like need to be changed over possibly as the speed sensors and the two rotors on the shaft are not compatible. Not a big deal really.

The input shaft, which is actually part of the overdrive gear assembly inside shares the same part number as the MX83 box. So the spline count will be the same. You lucky bugger. This means your MX83 torque converter will fit on this A341E box.

Seems a lot easier than a first thought, a little too easy. Please don't take my word for it though, I'm goiing off my parts CD and it's not always 100% accurate. I've noticed my EPC tells me the JZ soarers runs a A340E box not a A341E so something has gone a miss somewhere. This needs to be checked.

Also note, the trans code of A341E vs A340E means first gear ratio is slightly different. I think the A340E runs a lower 2.8:1 first gear for better pickup for less powerful engines where as the A341E's run a taller 2.4 or 2.5:1 first gear ratio.

Just check the code plate on the side for model number and part number. 40-30 means A340E and 40-31 means A341E. Also the part number for a JZZ30 Soarer should be 30030-24260 up to 1996.

Hope that helps.

[menace]

Mate your a champion. Great stuff. I will get all the part numbers on Monday and will let you know everything asap.

The box will only cost me around $250 which is why i'm really keen on finding out if it's worth while.

Now another question is the A341E a 3 spd with lock converter or a 4 speed?

If it's a 4 speed then i assuming my 7M converter would not be suitable?

[MacroP]

Yes certainly a 4 speed, very similar boxes in looks but some mechanical differences inside depending on the box's origins.. Take some pics with a digi cam please if possible noting the input and output shafts and overall pics of the entire trans.

[menace]

Well i can't take any pics of the input shaft cause the box is still attached to the engine.

But i'll take pics of everthing else...

[MacroP]

Mate your a champion. Great stuff. I will get all the part numbers on Monday and will let you know everything asap.

The box will only cost me around $250 which is why i'm really keen on finding out if it's worth while.

Now another question is the A341E a 3 spd with lock converter or a 4 speed?

If it's a 4 speed then i assuming my 7M converter would not be suitable?

The 4 in both a340e and a341e means it's a 4 speed box and both have lockup torque converters which gives an illusion of a fifth gear when cruising. You will most likely need to retain your 7M torque converter as I'm not sure the one from the new box will be comptaible with your 7M flex plate nor how big it is. My 1UZ torque convertor is much larger physically than my 7M unit. Don't know what size TC the 1JZs have.
As i said it's likely your 7M torque converter will fit onto this new transmission(the bell housing will certainly fit 100%) but time will tell. The valve body in this box is the biggest issue for this conversion.

[chris davey]

Great info.

I never knew the a341e (a341LE same?) had a taller first gear. AFAIK A341LE came in JZA81 and A342E came in jzx90. Re input shafts, I know they are 20 spline input shaft but there wouldn’t be an issue with the thickness of the shafts between these 2 would there?

[MacroP]

JDM JZA80 NA = A340E which should show Aisin 30-40LE on the side plate.
JDM JZA80 turbo = A341E which should show Aisin 30-41LE on the side plate.

Never seen a JZA81 im my EPC's both JDM and international. Doesn't mean they don't exist. US market cars are in neither of my EPCs.

My spare V8 A341E in the garage has a 20 spline input shaft. MX83 A340E havd a 28 spline input I think. Can't check now as the one I had is at the tip. I noted back when I has them side by side that they where different but can't remember exactly.

JZX90 and MX83 share the same part number in the EPC's for input shaft. So this should be both the finer 28 spline technically. EPC list the JZX90 as having either a A340E or A341E later on. Bit confusing there.

A342E's have a lower 0.75 overdrive apparently vs the 0.7 in the A341E and A340E.
A342E is found in the V12 Century. I wonder what others it's been in.

[chris davey]

So you are basically telling me that the input shaft on the jzx81 box is going to be different to the jzx90 box. I know the jzx81 is a 20 spline as the torque converter guy is modding a jzx81 converter with a tarago one that is also 20 spline. If the box comes from the same engine (1jz) how can it have different input spline? As I have a jzx90 box in my car I was told that fitting the modded jzx81 converter is fine. I went this way as it is a lot easier to send a spare one down rather than pulling the box out and waiting for it to be done.

[MacroP]

Looks like my EPC is tell me fibs maybe. It says the JZX80 and 90 (in the turbo) share the same TC. The MX83 has the same input shaft(part number in the EPC's) as the JZX80 and 90 turbo's yet the MX83 is the finer 26 or 28 spline input from memory. Something has gone a miss here. See my confusion?
Shit, this has got me scratching my head. I'd say stick with what the tranny mechanics say.