We just picked up a beautifully clean and cosmetically fantastic 1980 300SD for a song. It is going to need a new motor though. I found a motor for my 1981 300TD a couple years ago that worked out fine.

Are there significant differences between the W123 sedan motors and the W116s?

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Mike

1980 300SD
1981 300TD
1998 E320 Gasser Wagon
2000 SL500

AFAIK, the differences are mostly minor. The exhaust manifold doesn't have EGR on the W116, different vacuum routing and pump, maybe different sensors, but really most everything is similar enough otherwise or will swap over (like the throttle linkage). I don't think you should have any problems really.

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Current: 1975 450SEL, 83 300D, 88 Yugo GVX, 90 300D OM603 swap, 91 F150 4.6 4v swap, 93 190E Sportline LE 3.0L M104 swap, 93 190E Sportline LE Megasquirt, 03 Sprinter, 06 E500 4Matic wagon.

Oil pans are different, throttle set up is different, intake set up is different

Best have two motors on two stands and take everything off the W116 and install on the W123 motor if that's the route you'll go.

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Allen Kroliczek
Oak Grove Autosport | Oak Grove Autosport
01 G500, 82 300TD, quite a few more.....

I have two nice running motors out of 300D's if you need one, just send me an email. Even have some video of one of them running. One is out of an 84' other an 85.

Awesome. I emailed you yesterday. Very interested to learn more about them.

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Mike

1980 300SD
1981 300TD
1998 E320 Gasser Wagon
2000 SL500