Blown the auto box in my 2000 TJ and need to fit a replacement. Is it possible to fit the auto out of a TL (tiptronic) into a TJ (non-tiptronic)? I was under the impression that the were wasn't any difference between the tiptronic and non-tiptronic transmission for the TJ? I've seen a lot of posts on retro-fitting a tiptronic which seems to involve a fair bit of work but just curious to see if a trannie from a tiptronic TL/TW could be mated up to a non-tiptronic shifter in a TJ.

From what I've seen/heard you can't use a TL/TW box in anything but them as the is a difference with the VSS (Vehicle Speed Sensor)

Tiptronic vs. non-triponic is a different topic from TJ vs. TL 4sp gearbox changes.

For the former, the gearboxes for non-tiptronic and tiptronic pre-TL models gearboxes are exactly the same. The tiptronic function is an electronic function not a mechanical. To do the conversion, from memory, you obviously need the mechanical parts - shifter and linkages, and need to make some electronic changes - specifically installing a tippy engine loom (probably dash & cluster loom swap depending on which model you get the parts from), a tippy type ecu (or maybe reflashed one? Speak to wytwyn about that), associated bem (search about how the BEM & ECU pairing works) and you'd also need the same ignition barrel or the lock to be cut to your key. Also if you want the lights on the cluster to show then you'll need that too.
(I've got a TJS2 digi cluster I'm going to part with soon.)

As for putting a TL box into a TJ - to my knowledge the only limitation is regarding the speed sensor. In the TJ and earlier boxes the speed sensor was a gear in the box, I believe due to cost reductions this was removed in the TL's. Without knowing a huge amount about this, I would say it's a matter of either relocating and rewiring the speed sensor.
You'll need to do some research on this and find out. Start by checking the service manual - you can find the links in member "Karj" signature.

Thanks for the assistance. Sounds like it'll be easiest to just fit a TJ box and take my chances with the wave spring.

You would take your chances with a TL box as well. The only gearbox where the wave spring issue was fixed was the ones fitted to the TW's.

If you are really concerned with wave spring failure, then while the box is off, have it rebuilt using the revised wave spring. Since you don't need to pay labour with them removing/refitting the box you may be abe to get a full rebuild done for under 1.5k. Ask around ;)

If you change the gearbox yourself, then you'll save heaps of money with gearbox changes, so if you break anouther one then head back to your local wreckers and pick out anouther 4sp for cheap.

Ah ok, may as well stick to the TJ box then. Just to clarify can I hook up the gearbox from a TJ tiptronic straight into my standard 4 speed? Or should I be looking for a gearbox from a standard 4 speed?

Ah ok, may as well stick to the TJ box then. Just to clarify can I hook up the gearbox from a TJ tiptronic straight into my standard 4 speed? Or should I be looking for a gearbox from a standard 4 speed?
As noted above and elsewhere, all 3.5l (*) TH, KH, TJ & KJ (and possibly TF & KF) 4 speed automatics are interchangeable regardless of whether tiptronic or not.

(*) While physically and electrically interchangeable, according to my Ellery workshop manual the 3l 4 speed automatics have different gear and final drive ratios to the 3.5l units. I understand that different torque converters were used with the 3l engines as well.

Yep. If you really want tiptronic it is an easy conversion wiring wise too.

Mike

The issue is sfa to do with tiptronic etc, is the output shaft sensor ring is differently calibrated thus as soone as you move the car you will be in immediate limp mode.

If this isn't information to consider on this topic just disregard but from TE-TW Mitsubishi Magna & all Auto Mitsubishi 380 they all used the INVECS Transmissions on Auto models as to which one is best I'm not sure but have given more details below of what I know.
In the TJ range of Autos the Ralliart Magna's computer-controlled 5-speed Sports-mode transmission has been extensively recalibrated to suit the torque characteristics of the upgraded engine. This has included increasing the upshift and wide-open throttle downshift rpm while driving in auto-mode. Also, the manual-mode maximum downshift rpm was increased, the minimum upshift rpm was reduced, and power upshifts and kick-downs have been sharpened.
According to reviews the AWD Mitsubishi Magna Sport & VRX transmissions also got similar treatment although the differences compared to the TJ Ralliart Magna are not mentioned though but it will hold the same gear even at the rev cut.
The 380 transmissions were a improvement on the TL-TW Magna tiptronic transmissions although not sure if they improved on the AWD performance models Sport, VRX & TJ Ralliart Magna Transmissions if that helps and if it can't be done you could always get the same transmission and add a Transmission cooler to it as RPW preaches to stop it from blowing and shift quicker as they make a huge difference although I think the Ralliart Magna, AWD Magna Sport, AWD Magna VRX or 380 transmission with a Transmission Cooler would be the ultimate transmission in a Mitsubishi Magna.
Details:
Auto Transmission Cooler
We cannot preach this enough on Mitsubishi vehicles. If you have an auto, any model, this should be one of the very first things done to the vehicle. 99% of Mitsubishi transmission failures are as a direct result of the oil being overheated by the lack of factory cooling on the transmission oil. Regular changes every 20,000km should be done regardless on these vehicles. Fitment of an aftermarket transmission cooler, of virtually any design, will improve transmission life and responsiveness by over 100%. The vehicle will shift more consistently, be more reliable and cost a lot less to repair in the future. This is a very easy thing to fit and as you modify the vehicle more, becomes extremely necessary. They are usually mounted in front of the radiator, although RPW has been using the B&M fan cooled units a lot more which have there own thermostatically controlled fan to further improve there reliability.

If this isn't information to consider on this topic just disregard
Great information but it doesn't really help the original poster's question at all. If it's not relevant, please don't post it in the Tech section.

Exactly, question has been answered and no need for dribble a lot of which was no where even close to accurate