I found this on eBay:

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6330&item=2442653823

It's listed as being a '59 300D, and it looks to have an inline-6 engine...I see what looks like a diesel injector pump, but also see what looks like a carburetor coming sideways off of the intake manifold.

Has anyone seen anything like this? What is it?

Thanks!

Its the fuel-injected, gasoline powered full size Adenauer 4 dr. luxury sedan..... comparable if not identical engine to the 300SL..... and 300d (little "d") is correct designation. I believe the Adenauer was built from 1956 - 1961.

The Mercedes 300 Adenauer limousines span the W186 (51-57) and W189 (58-62) bodies. The small letter suffix denotes running improvements. a through c models are W186 with carburetted engines, d models are W189 with fuel injected engines. The M189 in the 300d is similar to the M198 in the W198 better known as the 300SL roadster and gullwing coupe. The M198 is canted 45-degrees or thereabouts for a lower hood and has a dry sump lubrication system with no oil filter! In that regard, the only peculiarity of the M189 is that the head to block mating surface is not parallel to the piston ring surface. The M189 powered the 300SE and 300SEL (W112 and W109) cars through the late 60s. Except for the misbadged V8s, of course.

The 300d cost $12,000 in 1960.

The W189 has it's own peculiarities. Many samples have dinged hubcaps because is seems that you have to pry off the center section to get to the lugs. While the center section and trim ring are separate pieces, they're not meant to come apart after assembly. The proper way to remove the hub caps is to fit the tire iron into any of the trim ring slots and pry against the wheel. Try that on your W114 or W123 hub caps.

The first I heard of these cars was when my dad bought a project 60 300d. He told me he that bought a 300d to restore and I couldn't figure out why he or anyone would want to restore a 300D in the mid 80s.

The attached image is of a 52 300a.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD

Attached Thumbnails

 

That would be a ton of work to get going again. The engine is all aluminum too and there are many different variations all with different head gaskets, I might add. I looked at the engine pics and I wasn't aware the old ones had fuel injection. Learn something new every day!

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

The reason that it has the injection pump is because it has mechanical fuel injection, which is similar to that of the diesels.

__________________
Nick
*****
2002 Sprinter 2500 140" High Roof :

The 300d was the best of the line of the 300's. After the 300a, 300b, and 300c. I consider the old 300's to be the S-Class' predecessor.

That is one of the MB's I wish I could buy in perfect shape. The fenders were as hard as granite!

__________________
1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)

Not the S class predecessor (there was and "S" sedan at the same time. I think), but the 600 Grand predecessor. Limonsine chassis, not personal sedan.

Last MB to have a separate body on frame, too, I believe.

Peter

__________________
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!

My comment was that I wasn't aware that the older ones had fuel injection, I thought they had carbs. I know the 300SL had direct injection. I'll have to check my 300 spare parts table book, that I picked up for a song at a used book store locally.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

My first Mercedes was a '55 300c. I bought it in '63 and have been a consistent Mercedes owner since. It was maroon with tan wool upholstery. It had 2 carburetors and a Borg-Warner automatic transmission made in England. There was a electrical valve on the rear brake lines that prevented the car from creeping when stopped at a light. The brakes were released when the accelerator pedal was slightly depressed actuating a microswitch. I believe that power steering was available starting with the 300d model. The car also had a central chassis lubrication system. There were small diameter nylon lines going to all of the grease fittings. A foot operated plunger was to be depressed every 50 or so miles and 90 weight oil was dispensed from a engine compartment resevoir to all of the grease fittings. This feature would leave oil spots when parked. The car had a nice Becker AM radio with a short wave attachment so you could listen to worldwide broadcasts. It had a third horn, high pitched which was switchable for highway use. The car weighed about 4200 pounds and was equipped with 760-15 tires. I remember that when new they cost the same as a Rolls-Royce! They were imported to the US by your friendly Studebaker dealers. I was first introduced to Mercedes when I was employed at Helms Bros. in Elmhurst , NY in '59-'60.

Let's not get our terms mixed up. Port fuel injection is different from throttle body fuel injection, but it is not direct injection which means that fuel is injected into the combustion chamber. No passenger car sold in the US past or present has a direct injection gasoline engine. Mitsubishi and maybe other manufacturers offer GDI engines in passenger cars overseas.

VW TDIs and the E320 CDI expected here next year have direct injection Diesel engines.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD

The 300SL did have Direct injection.

Warren and 300td,

I stand humbly corrected.

Sixto
95 S420
91 300SE
87 300SDL
83 300SD

That's one of the nice features that gave it so much power for its size in that time.

The Germans used direct injection in the Me 109 engine (inverted V12) and some other aircraft engines, and Benz used it in the first mechanical fuel injection engines. Easy to tell, as the injector is in the block aimed upwards toward the sparkplug, not in the intake manifold aimed at the intake valve as in all later engines.

Rumor has it that much more horsepower is produced by direct injection, but keeping the injector clean is very difficult. That's why the injector was in the block on the MB engine (M189?) -- it was covered by the piston when the sparkplug fired. Extra swirl, enriched zone at the plug, etc.

Pretty spiff for 1953, eh?

Peter

__________________
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!