I am sure this has been talked about before, I will do a search when I have more time.

There is a beautiful 300SE with a "bad engine" for sale locally. The price is great. I happen to have a rusted out 300SD that runs like a top. I have been looking for a 300SD/SDL to replace my rust bucket.

How easy is it to swap engines? Do transmissions need switched? How bout rear ends? Could a former HUMVEE mechanic and helicopter mechanic do this swap in a day?

Thanks

The same years and body style?

Since you will need to swap the rear end and speedo too, and I am not sure about the fuel line setup and depending on the year, perhaps some engine managment electrical stuff, its not likely to be doable in a day.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

84 gasser and 83 SD

Probably a 380SE then, with a V8, and not the 300SE with the I6?

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-Aaron


1981 300D
http://i73.photobucket.com/albums/i2...2/1981300D.jpg
Also:
1973 450SL
1988 300SE

Ive done the swap 3 times now, I could do it with an assitant in 20 hours. Yes you have to change the transmission, Electical is very easy, if you dont care about the tach, Ive never tried to get the stock tach working. Fuel tank is the same, just need to make a 1/2 to 3/8 adapter to bypass the fuel pump.

you will probably have to change the driveshaft yolk on the transmission which requires a rare socket, 30 or 31 mm deep shaft 12 point.

Rear end stays in, Exhaust is simple. Changing the ignition switch is pretty straightforward but if you havent done it before it will take some time.

There is not really complicated bits it just takes time. The hardest swap I tried was an 85 300 SD motor, and 240D 4spd man, into my 84 500 sec, it required a bunch of custom work, I put an 83 300 SD into an 85 500 SEL and it was straightforward.

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D

remove the engine and trans, rip all the 300se engine stuff out of the car, put in the special diesel things (bigger battery tray, different heater hoses, vacuum lines, wiring, gp's) and put the engine and transmission in coupled. You may need a 300sd driveshaft. The shifter linkages will have to be swapped over probably. Also the throttle setup. speedometer should be compatible if their both w126 transmissions

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1981 300SD 512k OM603

Its been my experiance that you do not need to change the driveshaft, especially since the driveshafts are balaced with the whole shaft. The shifter linkage is the same (if its a 380 SE). Worth doing for sure..

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D

or a 1 5/16

I think I will take a closer look at the car. Thanks

What are those strange measurments in We dont have those here....

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1984 Euro 300SDC, (4spd standard)
1986 Toyota Landcruiser Diesel HJ60 5spd X2

Gone but not forgotten (some sold, some stripped)
1983 300 SD, 1985 300 SD, 1983 240D, 1986 300 SDL, 1985 300 SDL, 1983 300 D, 1984 300 D, 1985 300SD, 1987 300 SDL, 1983 300 SD, 1985 300 TD Euro, 1983 380SEC, 1990 300 D, 1987 300D, 1982 300D, 1982 300D, 1994 E420, 1987 300 TD, 1987 300 D, 1984 300 D