I have the opportunity to buy a 1983 300TD station wagon with a perfect body, but the engine has 300K+ miles on it. Oddly enough, I have a perfectly good 300D engine sitting in my 1976, and the body on the 76 could use some fixing. So I am thinking, transpant the engine from the 1976 into the 1983. I know its a non turbo and all that, and I am not concerned. Will the trannys and all that stuff bolt right on, or is a lot of mods needed?

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http://www.betten.mercedescenter.com...n_banner_1.jpg
1976 300D
190,000 Miles
Colorado Beige

1975 300D
Parts Car
78,000 Miles
Rustbucket
Also Colorado Beige

1984 190D 2.2 (Dad's)
156,000 miles
Champagne Metallic Clearcoat

I think the engines differ because the original engine found on the TD has some sort of vacuum "thing" for the rear suspension, while this engine from the 76 doesn't. Somebody else can probably explain this better for you.
-Joe

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

The cylinder head for the wagon is physically different- there is a hydraulic pump mounted on the front of the head for the rear suspension. If you do the switch (and with 300K on the car the original shocks probably leak) and check the rear shocks, they may have already been replaced with gas struts.

One of my current projects is putting a 300TD engine into a 300CD. I'm trying to find a plate and gasket to match up for covering the hole left in the head after removing the pump.

.....and if you DO switch out the engine... I got dibs on the 300K one!!!
I want to put a turbo diesel in a w108 next...

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

I am just thinking out load here (well in print anyway )
Perhaps this has been suggested before, but:

Would a belt driven pump (eg PS Pump) work, instead of the 300TD head mounted SLS pump?
What pressures are required?
What flow is required?


If the PS pump runs at too high a pressure, wouldn't a pressure regulator work to set the pressure to suit the SLS, and change the pulley to accommodate the flow (smaller = higher flow, larger = lower flow?

Has anyone tried this? It may overcome the perennial problem of 300D vs 300TD in engine swaps.

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Tony from West Oz.
Fatmobile 3 84 300D 295kkm Silver grey/Blue int. 2 tank WVO - Recipient of TurboDesel engine.
Josephine '82 300D 390kkm White/Palamino int.
Elizabeth '81 280E, sporting a '79 300D engine.
Lucille '87 W124 300D non-turbo 6 cylinder OM603, Pearl Grey with light grey interior


Various parts cars including 280E, 230C & 300D in various states of disassembly.

I want to totally dispose of the dastardly system and replace the rear with a normal gas strut, if this is easy and plausible. My question is if the actual engine will physically fit in easily, or if it will not connect to trans, etc.

__________________
http://www.betten.mercedescenter.com...n_banner_1.jpg
1976 300D
190,000 Miles
Colorado Beige

1975 300D
Parts Car
78,000 Miles
Rustbucket
Also Colorado Beige

1984 190D 2.2 (Dad's)
156,000 miles
Champagne Metallic Clearcoat

W123 chassis engine will drop right in, W115 chassis engine will require some more work (different IP, oil filter in a different place).

A combination pump off a gasser wagon may work for the suspension, although it would need to be off a W124-- the W123 had the M110 that had the pump on the left cam.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!

But other than moving the oil filter, does the injection pump definitely need to be changed, or can it be kept on the engine with the rest of the W123 components?

__________________
http://www.betten.mercedescenter.com...n_banner_1.jpg
1976 300D
190,000 Miles
Colorado Beige

1975 300D
Parts Car
78,000 Miles
Rustbucket
Also Colorado Beige

1984 190D 2.2 (Dad's)
156,000 miles
Champagne Metallic Clearcoat