engine conversion for a w111 sedan - Mercedes-Benz Forum

 
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post #1 of 8 (permalink) Old 01-16-2010, 05:41 PM Thread Starter
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Date registered: Feb 2007
Vehicle: 300 SL 24V 1990, 1995 E220 Saloon (w124), 1995 W140 S500 Coupe , 1978 280 cew (w123)
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engine conversion for a w111 sedan

calling all geniuses out there! i have a 63 w111 saloon manual. it looks like its had a custom engine in past as its a diesel now. what engine could i transplant into it without much messing? one thing to mention is that my car has a manual column shifter (does this restrict the egine and box conversion? or is possible to put any suitable engine box an adapt them to the column shifter?

fyi - in uk donor 107,123, 124,113 together with se's from the 70s and the 80s shapee can be bought cheaply

thanks
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post #2 of 8 (permalink) Old 01-16-2010, 05:56 PM
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The obvious and easiest transplant would be the engine that was originally in the car. I don't know if the 6 cylinder and 4 cylinder versions are the same at the transmission end, but I suspect they are.

I'm afraid I'm not a fintail expert, so your real advice is on the way.

"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck
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post #3 of 8 (permalink) Old 01-16-2010, 06:28 PM Thread Starter
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Originally Posted by DrJfrmLA View Post
The obvious and easiest transplant would be the engine that was originally in the car. I don't know if the 6 cylinder and 4 cylinder versions are the same at the transmission end, but I suspect they are.

I'm afraid I'm not a fintail expert, so your real advice is on the way.
cheers,i want somthing modern if poss but the retaining its classic look
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post #4 of 8 (permalink) Old 01-18-2010, 06:15 AM
GGR
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There are different options, some are straight and easy (petrol 6 cylinders), some a bit more complicated (v8) but very doable. You should first determine what you expect from the result: Power? Economy? Your budget will also be a determining factor, especially if you're not doing the job yourself. Tell us more on what you want and we will help you. If you were in the US I would recommend you buy a W108 4.5 donor car as they are dirt cheap here and transplant all the mechanical bits in your w111. That's nearly a straight fit.

As you are in the UK and for specific RHD exhaust manifolds and steering box clearance reasons a W108 6 cylinders or 3.5 v8 would be the easiest. The r107 would be also be an ideal donor car for engine and transmission, 6 or 8 cylinders. 500 sl/slc would be the best. a good W126 560 would also be an interesting donor car, but you would need to trace RHD 500 sl/slc exhaust manifolds and downpipes.

Last edited by GGR; 01-18-2010 at 06:27 AM.
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post #5 of 8 (permalink) Old 01-20-2010, 05:57 PM Thread Starter
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thank you very much for your informative response.

As for what i am looking for from the engine transplant - as it wont be my daily driver i would like something which has some power but smooth. Ultimately would like something that will drop easily into the w111 without my mechanic worrying about modern day electric issues or gearbox problems since mine is a column shift manual.

looking on ebay.co.uk i see that the following are available - what are your views on the following for my w111:

MERCEDES 280 ENGINE (110-989) on eBay (end time 29-Jan-10 13:43:31 GMT)

MERCEDES 560 V8 ENGINE (117-968) on eBay (end time 29-Jan-10 12:44:54 GMT)

Mercedes W123 280E Engine on eBay (end time 27-Jan-10 13:55:47 GMT)

classic mercedes 250 engine and box 6 cylinder 1969 on eBay (end time 16-Feb-10 09:11:57 GMT)

mercedes 190 2.6 engine straight 6 running on eBay (end time 25-Jan-10 19:23:35 GMT)

CLASSIC Mercedes PARTS 250CE 69-75 Engine Auto Gearbox on eBay (end time 09-Feb-10 11:40:19 GMT)

MERCEDES SL 450 ENGINE on eBay (end time 04-Feb-10 11:21:32 GMT)

many thanks
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post #6 of 8 (permalink) Old 01-20-2010, 06:53 PM
GGR
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The 4th and 6th ones would be the most direct fits. The last one would also be a reasonably straight fit but there would be some more parts chasing such as steering box and engine brackets.

I recommend you buy a full RHD car as by experience you will always need something. You can then part the remaining and hopefully break even with the parts you used.
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post #7 of 8 (permalink) Old 01-21-2010, 11:33 AM Thread Starter
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Date registered: Feb 2007
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Originally Posted by GGR View Post
The 4th and 6th ones would be the most direct fits. The last one would also be a reasonably straight fit but there would be some more parts chasing such as steering box and engine brackets.

I recommend you buy a full RHD car as by experience you will always need something. You can then part the remaining and hopefully break even with the parts you used.
thank you for sharing your knowledge . no doubt i will revert with more questions
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post #8 of 8 (permalink) Old 12-26-2010, 05:26 AM
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Ifzal,

do you have any shots of the diesel in the W111? I'm doing the opposite to you - replacing the original 2.2 with an OM617 or OM602.

Thanks

Dweezil
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