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  #1  
Old 02-14-2003, 06:42 AM
heywood970
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Engine Swap in 1992 300SE W140

I want to put a diesel engine in my 1992 300SE W140

Am I correct in assuming that a straight 6 diesel will replace teh straight 6 petrol

I ma located in Ireland where gas is $1 a litre so I need hte economy.

I know the performance will be much less.

Thanks for any advice.
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  #2  
Old 02-14-2003, 09:20 AM
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Most diesel engines the MB used for cars don't have enough torque to pull that 2 ton beast. The S350D turbo(1992-95 in US) was a "SAD" example of MB quality as most of the engines had problems as they weren't upto the task.
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  #3  
Old 02-14-2003, 12:49 PM
heywood970
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appreciate hte response
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  #4  
Old 02-14-2003, 12:54 PM
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I believe that...

...Mercedes made a diesel engine for the W140 sedan. The diesel W140 was sold only in Europe. So the swap that you're contemplating may be physically possible. You may wish to check into this further.
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  #5  
Old 02-14-2003, 12:56 PM
heywood970
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I actually thought the W140 diesel was onlt available in the US. called the SD350? Saw one on eday some time ago.
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  #6  
Old 02-14-2003, 06:38 PM
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there were two sizes of deisels in n.a.for the w140.the second version was the sd350
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  #7  
Old 02-14-2003, 08:09 PM
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Only one engine. The 92-93 300SD had the same 3.5l engine as the 94-95 S350. Essentially the same car. Possibly the same 603.971 engine as in the 90-91 350SD and 350SDL which are the 126 body style.

It'll be interesting to see if the OM606 will go into a 140.

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  #8  
Old 02-14-2003, 10:26 PM
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The W140 ws available first with a 3.5 liter turbodiesel which, as everyone knows, turned out to be a complete reliability disaster. The car was called the 350SD and was available almost wordwide including the U.S.

Later on, the diesels were pull out of the U.S. market including the 350SD. Europe and the rest of the world saw the S300 TurboDiesel born into the market and became very popular, (mostly in Europe where gas prices are very high).

I ask the main question of this thread to the local M.B. service advisor once and he replied that the swap is NOT that easy. Many factors have to be taken into the account, including a whole new electrical/electronic system (which could raise your budget into the stratosphere, specially on a W140).

Although in some models the swap from a gas engine into a diesel one is not that tedious, most swaps from a diesel car into a gas version is almost impossible, to say the least.
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  #9  
Old 02-14-2003, 11:45 PM
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Trade for an E-Class or C-Class diesel?
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  #10  
Old 02-16-2003, 04:52 AM
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Quote:
Originally posted by tkamiya
... and because disel does not produce vacume, the brake system would have to be retrofitted, etc, etc, etc.
Diesels come with a vacuum pump to run the brakes and other things so that's not a problem.

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  #11  
Old 02-16-2003, 05:09 AM
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Quote:
Originally posted by A. Rosich
Later on, the diesels were pull out of the U.S. market including the 350SD.
Diesels were pulled out of the US market in 2000. The S350 was sold through 95 I believe. From 96-99 the E300 (turbo in 98 and 99) was the only MB Diesel model offered.

I don't know what was available in Europe.

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