My wife's engine in her 1982 240d went bad (no oil) and I bought another one under the impression that it would fit ok. It came out of an earlier MB, dont' know what year but it has loop glow plugs. Plus it came out of a standard and ours is auto. The fuel pump and vacuum pumps are different. Can I just swap fuel pumps and vacuum pumps? There is an (oil?) line going from the fuel pump to the block on the auto that the standard doesn't have. Is this an impossible dream? Or do I have a little prayer of getting it to work?

If the engine came out of another W123 (and has the oil filter housing in the same place), you will be fine. You can get pencil-type glow plugs that have the larger loop style base and the other issues can be worked.

If it came out of a W115, you will have a big problem with the oil filter housing clearing the steering gear.

Rick

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

I was told by someone who is familiar with MBs that because of the oil line coming out of the fuel pump that it wouldn't work. In other words, I have to change the injector pump and put the one from my 82 which has all of the stuff for an auto tranny on the earlier engine which came out of a standard. My auto pump has the oil line and the standard pump doesn't have one. Any idea how I reconcile this?

That is part of the engine. Unless you are changing the injection pump too the oil line makes no difference.

correct.

As long as your oil filter housing matches up you are good to go.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

The oil filter housing seems to be the same size and in the same place but it doesn't have the two big hoses coming out of the front. Also the injector pumps are different. Shall I post a pic of them?

You need to match up engine numbers. If it is from the same engine family it will work.

Mating it to your auto transmission can be accomplished by using the plate that is on YOUR transmission. This is the plate that is between the engine and transmission. You will also have a pilot bushing issue to pay attention to. The auto pilot bushing is sort of hemispherical, while the manual will have a bearing as I recall. If not a bearing it will be a cylindrical bushing.

You said that your injection pump on the replacement engine does not have the oil line. This leads me to believe that you do not have an OM616 engine as was in the 1982, but you have an OM615 engine instead. As far as I know, all OM616/OM617 engines had the oil line, which is the way the injection pump is lubricated on those engines. The OM615 had a self-contained oil reservoir in the injection pump. You cannot run the 1982 pump on the replacement engine without that lubrication line connected or you will ruin the injection pump. Your best bet would be to transfer the transmission parts from the newer pump to older pump, if they will fit.

The loop style glow plugs take a different control system than the pencil style (a lot longer glow time).

The vacuum pump on the 1982 is a piston style, while the older engines used a diaphragm type. They should interchange without a problem if you keep the mating lines.

Sounds like your 1982 had an engine oil cooler and the replacement engine doesn't (large lines out of the filter housing). Don't know if you can swap filter housings or not. You could alway just leave the oil cooler disconnected. This also sounds like it could be an OM615 engine.

If it is an OM615 engine, you might also have to swap the transmission adapter on the engine. Not sure about that one.

Its a "Euro", yes post a pic

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1985 Euro 240D 5 spd 140K
1979 240D 5 spd, 40K on engine rebuild
1994 Dodge/Cummins, 5 spd, 121K
1964 Allice Chalmers D15 tractor
2014 Kubota L3800 tractor
1964 VW bug

"Lifes too short to drive a boring car"

what year is the 4 cylinder out of?

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1981 300SD 512k OM603

Here are some shots. Looks like from the serial numbers they are both 616 engines. Is that correct?

Attached Thumbnails

         

The replacement engine is a European model that was used with a manual transmission.

It will work in your 240, but it will take a bit more work then a US spec engine would. You have to swap over the injection pump, oil filter housing (if you want to have the oil cooler), flex plate (making sure to have it's balance matched to the flywheel that came off engine), pull the pilot bearing..., and get 4 pencil type glow plugs that fit the old style head.

PS, I still owe you 10 bucks for the cowl grills.

Are you putting the engine in yourself?

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1998 Mercedes E300TD

1983 Mercedes 240D Turbo, 131bar injectors, Cosworth intercooler and 63' Ford Falcon radiator, Ardic Parking heater, Headlight wipers, Best 38.6mpg.

1973 Saab 96 Rally Car, 1.8l V4 with all the race bits

You probably don't need to swap IPs, but you will have to get the "throttle" linkage to work, and address the IP lubrication issues. Probably will be easier to do that than swap IPs.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)

The oil supply is fine, the M-pump on the euro engine has a different lubrication design.