I have a chance to buy a wrecked 99 e300d. Can I swap the engine/tranny into my '95 w124 as a unit? I will have the computers, etc.
Didn't the '95 euro w124 have the 5 speed automatic?

EDIT:

Jeremy 5848 has the correct answer.
(Thanks!)

If possible I'd have both chassis side by side,label EVERYTHING,and take lots
of pictures so you'll be able to reconstruct the '99 inside the '95.

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The '99 is a W210 chassis, the '95 is a W124 chassis. Since the '95 used the OM606 engine and the '99 did too, there will be no basic mechanical problems getting the block to fit. I don't know about the transmission. The biggest challenge might be fitting the turbocharger and intercooler into the W124 chassis. The OM606 engine in the '95 was normally aspirated so there was a bunch of stuff it didn't have.

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No, at least not the 1995 E300 diesel. Some European model 124's did have a five-speed automatic, but it was the 722.5 transmission, which was basically a modified 722.4 with an overdrive tacked on. It was too weak to be used behind any serious powerplant though. In the USA, the 722.5 was only used behind the M104 engine in the R129 (I think) for a couple of years. It probably wouldn't survive behind the torque of a turbo diesel, but it may work ok behind the 606 non-turbo. This swap would still require figuring out how to graft the 722.5 EGS (Electronic Gear Selector - tranny computer) into the W124. I'm not sure if it's standalone or if it needs to "talk" to the M104 engine computer.



It might be possible, but you would need to swap EVERYTHING, the engine, transmission, drive-by-wire throttle setup, all computers, possibly the wheel speed sensors, and who knows what else. You'd need to use the electronic speedo from a 400E with a converter box. I don't believe anyone has actually done this (yet) so if you can pull it off, there will probably be a line of folks wanting to know all the tips & tricks required!

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My 95 S320 has it as well... Should be able to use an adapter box to make the 722.6 work with a diesel like that....

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'95 S320 LWB
'87 300SDL
'04 E500 wagon 4matic

Yeah, I was thinking the early S320's also used the 722.5, but I couldn't remember for sure. It was still only used with the M104 engine due to the maximum input torque rating of 300Nm (approx 230 lb-ft). It would work fine with the 606 non-turbo if you could figure out the electronics. A custom driveshaft is also required.



WhippleM104 obtained an aftermarket standalone TCU that makes the 722.6 work in a W124, but it's expensive, and still needs a lot of custom programming to dial it in to the particular engine. It is NOT a simple bolt-in, and the aftermarket controller does not work as well as the factory controller. I am very interested in doing this swap once all the kinks are worked out and the performance equals the factory setup. The 722.6 is really a great transmission and it's strong enough for high power applications (i.e., 6.0L V8's).

The bigger problem than the transmission is that you need to run the fuel injection computer or swap to a mechanical pump. If you get the factory idi module to work then the transmission is no problem. You will need the ratios according to the speed sensors to be correct though. I think that the easiest is to make a rotor wheel that reflects the correct ratios. If you go with the mechanical pump then yes I can help with the transmission control. I have got the system working very well. The bugs are minor and very easy to deal with and the tuning is mostly necessary to satisfy your taste in shifts. When I send out a control unit, it will shift your car through the gears.