Engine Swap into a 1979 300td non turbo from a 300d non turbo sedan - PeachParts Mercedes-Benz Forum

jojee · #1 01-10-2011, 02:46 PM

Hi guys I'm new to this forum. I am knee deep in a project and have come to a fork. I have a 1979 non turbo 300td (station wagon) w123. The engine that's in it is the original engine. It has 276 miles on it, at some point in the past the engine was rebuilt. For what ever reason, the number 2 cylinder has lost compression. I bought the car in that condition. The SLS system in the car has been deleted by the last owner. I am planning on doing a engine swap. The doner engine is from a 1979 300d (non-turbo sedan). Just wanted to ask if the doner engine from the 1979 300d non-turbo sedan would be a direct swap into the wagon? I know the wagon engines have the SLS pump, but the SLS in my wagon has been removed? Are there any other differences between the sedan and the wagon engines other then the SLS pump? From what i can see the crank pulley seems different. Any advise, pointers would be great. Thanks!

Biodiesel300TD · #2 01-10-2011, 03:19 PM

The SLS pump is the only difference. The head is different on a wagon engine due to the SLS, but if you're ploping a 79 sedan engine into a 79 wagon with deleted SLS, it should be a straight up swap.

jojee · #3 01-10-2011, 03:28 PM

Quote:

Originally Posted by Biodiesel300TD

The SLS pump is the only difference. The head is different on a wagon engine due to the SLS, but if you're ploping a 79 sedan engine into a 79 wagon with deleted SLS, it should be a straight up swap.

Right, my friend thats helping me with the swap has pointed out that the crank pully system and the a/c compressors as well as the oil cooler and the actual diesel fuel pumps seem different? whats your take on this? I can post some pictures if you like?

Stretch · #4 01-10-2011, 03:50 PM

Welcome to the forum.

Post some pictures if you're not sure about stuff - you'll find plenty of people here who can tell you what you are looking at.

If you like reading this thread might help with your engine removal:-

How I took out my 1981 W123 300D (euro) non-turbo engine

Biodiesel300TD · #5 01-10-2011, 05:17 PM

There are two different AC compressor types the early York style which sit high on the passeger side, and the newer style that sits low on the drivers side. It would probably be easiest if you can put the one that comes off the engine out of your wagon onto the other block.

As for injection pumps they should be the same unless you've got a Euro engine with a M pump on one of them. Pics are alwasy very helpfull.

dbruckmann · #6 01-10-2011, 05:18 PM

The A/C compressor on a wagon is the Harrison/GM type located at the driver's side, bottom. The sedans used a different A/C compressor (York) mounted above the alternator (and blocking access to just seemingly everything).

Other than that they are the same.

D.

Quote:

Originally Posted by jojee

Hi guys I'm new to this forum. I am knee deep in a project and have come to a fork. I have a 1979 non turbo 300td (station wagon) w123. The engine that's in it is the original engine. It has 276 miles on it, at some point in the past the engine was rebuilt. For what ever reason, the number 2 cylinder has lost compression. I bought the car in that condition. The SLS system in the car has been deleted by the last owner. I am planning on doing a engine swap. The doner engine is from a 1979 300d (non-turbo sedan). Just wanted to ask if the doner engine from the 1979 300d non-turbo sedan would be a direct swap into the wagon? I know the wagon engines have the SLS pump, but the SLS in my wagon has been removed? Are there any other differences between the sedan and the wagon engines other then the SLS pump? From what i can see the crank pulley seems different. Any advise, pointers would be great. Thanks!

Stevo · #7 01-10-2011, 05:24 PM

Quote:

Originally Posted by jojee

Right, my friend thats helping me with the swap has pointed out that the crank pully system and the a/c compressors as well as the oil cooler and the actual diesel fuel pumps seem different? whats your take on this? I can post some pictures if you like?

If the IPs are different one would be a "Euro" pump, pics would solve that one

leathermang · #8 01-11-2011, 10:55 AM

Quote:

Originally Posted by dbruckmann

The A/C compressor on a wagon is the Harrison/GM type located at the driver's side, bottom. The sedans used a different A/C compressor (York) mounted above the alternator (and blocking access to just seemingly everything).

Other than that they are the same. D.

I am not sure how you are able to make that blanket statement.
I have a 1979 123 wagon parts car... WITH the huge metal framework used to hold the York compressor ( which I have also ).

jojee · #9 01-11-2011, 10:50 PM

Ok guys thank you so much for your help, my sedan definitely has the york style a/c compressor. We just had a bad snow storm in Atlanta. As soon as I can make to my friends shop I will take pictures of both engines. I would really like to get this wagon on the road. Thank you all again and I will post the pictures soon.

dbruckmann · #10 01-15-2011, 04:28 PM

Quite right to correct me: the York compressor was used up to engine number 67785. Mine was chassis # 2940, engine 71223, built 04/79. As such, it already had the Harrison compressor, but earlier cars would have had the York.

Quote:

Originally Posted by leathermang

I am not sure how you are able to make that blanket statement.
I have a 1979 123 wagon parts car... WITH the huge metal framework used to hold the York compressor ( which I have also ).

leathermang · #11 01-15-2011, 11:30 PM

Quote:

Originally Posted by dbruckmann

Quite right to correct me: the York compressor was used up to engine number 67785. Mine was chassis # 2940, engine 71223, built 04/79. As such, it already had the Harrison compressor, but earlier cars would have had the York.

He WISHES he had that Harrison on his car !!!! Even the frame to hold the York is a monstrosity.

vstech · #12 01-16-2011, 12:47 AM

Quote:

Originally Posted by leathermang

He WISHES he had that Harrison on his car !!!! Even the frame to hold the York is a monstrosity.

heh. if he was WISHING for improved a/c options in the car... he'd wish for a sanden... like my euro wagon has, and my euro 240!

make sure your 79 has the same type glow plugs... mixing them up from a older style motor will force you to either use series plugs or updated large body pencils.