Is the 1980 300sd turbo diesel ok? - Mercedes-Benz Forum

 
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post #1 of 6 (permalink) Old 12-03-2004, 03:02 PM Thread Starter
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Is the 1980 300sd turbo diesel ok?

I'm looking to buy a 1980 300ds turbo diesel with 265,000 miles. Is the turbo versions ok to buy or should I stay clear of this engine? The car has a new trans, strait body and good interior. I drive in LA and a lot so I need something that will hold up. Any recomendations? Thanks.
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post #2 of 6 (permalink) Old 12-06-2004, 12:29 PM
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RE: Is the 1980 300sd turbo diesel ok?

Just my opinion: After driving 300D 115's (1975-1976) for years, driving the 1980 300SD is like driving a big boat. And too many "plastic thingies" that warp, break off or fall off. Most 300SD 126's that I have given a test drive idle as if one or two cylinders were not firing at all. Of the 35-40 Mercedes that I have, I have one 1981 300SD that has zero compression on one cylinder...compression test and leakdown test suggest a hole in the piston...which brings up the question "why would an engine with 'only' 198,000 miles have had what I would term a catastrophic failure?" Hard to work up any real interest in getting this car on the road.

Ken

"If I can't fix it, it don't get fixed"
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post #3 of 6 (permalink) Old 12-06-2004, 07:01 PM
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RE: Is the 1980 300sd turbo diesel ok?

You really can't compare a 300D to a 300SD. The 300D is a very basic car.. Very utilitarian. The 300SD is a roomy, fairly luxurious touring car built on a much larger chassis. Good examples of 300SD's still command top dollar. 300D's are a dime a dozen.
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post #4 of 6 (permalink) Old 12-16-2004, 12:59 PM
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RE: Is the 1980 300sd turbo diesel ok?

What about the 300CD, I think that may be a better model than the 300sd because it is smaller and gets better gas mileage. I drive a 280slc and the gas mileage is lousy. The 300sd looks too big and very much like a boat. I'm thinking about getting a diesel too, either a 240d or a 300cd. I can't see the appeal in driving a big smoke belching 300sd, just to get 20 miles to the gallon.
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post #5 of 6 (permalink) Old 12-17-2004, 11:41 PM
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The 300 CD 123 and the 300 SD 116/126 all use the same excellent engine, the OM617, turbo in some, non turbo in others. The three body types are very different, 116, 123, 126 – you need to decide what suits you – but all have the same engine.
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post #6 of 6 (permalink) Old 12-18-2004, 07:38 PM
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RE: Is the 1980 300sd turbo diesel ok?

Quote:
kweimer - 12/7/2004 8:29 PM

Just my opinion: After driving 300D 115's (1975-1976) for years, driving the 1980 300SD is like driving a big boat. And too many "plastic thingies" that warp, break off or fall off. Most 300SD 126's that I have given a test drive idle as if one or two cylinders were not firing at all. Of the 35-40 Mercedes that I have, I have one 1981 300SD that has zero compression on one cylinder...compression test and leakdown test suggest a hole in the piston...which brings up the question "why would an engine with 'only' 198,000 miles have had what I would term a catastrophic failure?" Hard to work up any real interest in getting this car on the road.

Ken
Gee whizz. I have 3, and I feel like King of the road. I wonder how you feel. I bow in the dust.

300SD's are extremely rare over here. But the few I've seen, tend to have been "tampered" with. It's tempting to think that many owners have been to their dealer or shop, and complained about poor performance. Many shops might have fallen into the lure that lies in adjusting the dieselpump or max rev governor. Just to try to please the customer.

Personally, I think that the 300SD as a concept, is too under-powered for luxury. And luxury is what the S is all about.

Regards

Geir.
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