Engine Replacement 250sl - Mercedes-Benz Forum

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post #1 of 11 (permalink) Old 06-27-2014, 03:35 PM Thread Starter
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Engine Replacement 250sl

Hey Guys,

The numbers on my 250sl pagoda dont match up. The engine number is that of a 280se. If i buy a replacement original 250sl engine then can I replace it outright or will this require me changing the gearbox or other components?

Also will Mercedes Classic centre be able to provide the engine?

Cheers in advance
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post #2 of 11 (permalink) Old 06-27-2014, 04:17 PM
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what is wrong with the engine in car now ??? classic center ?????? why .
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post #3 of 11 (permalink) Old 06-27-2014, 04:30 PM Thread Starter
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its an engine from a 280se. i want to put a 250sl engine.
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post #4 of 11 (permalink) Old 06-27-2014, 08:01 PM
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Pl5ease go to sl-113.org. You will get the most help.
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post #5 of 11 (permalink) Old 06-28-2014, 04:59 AM Thread Starter
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I've checked that out but I can't find a clear answer :/
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post #6 of 11 (permalink) Old 06-28-2014, 06:00 AM
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Vehicle: 4Keep:450slc5.0cab 280sl5sp 280se4.5 500seAMG 2sell:500sl92 380se83 300se86 350sl4sp 75slc MorInSig
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If it's not the original engine, does it matter what is in there? Are there any problems with the current engine?


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post #7 of 11 (permalink) Old 06-28-2014, 07:04 AM Thread Starter
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Wanted to atleast have a 250sl engine to maximise the value I can get out of it even if it isn't matching number
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post #8 of 11 (permalink) Old 06-28-2014, 08:26 AM
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I've been thinking about the junk cars I own, and consider I would probably be smart to dump everything but my convertible SLC, and replace them with a w113 stick shift. I think I would be willing to consider a modern drive train. That probably would not be the best for resale value, but I would imagine that it would maybe make for the best driver car. So if I was in your shoes, I might consider finding an an engine that could be rebuilt, or maybe buying the engine from Mercedes, but probably not even put it in the car. I would probably just store it until I wanted to sell the car. I'd probably want to put in a modern drive train if practical. But that's all moot if the car isn't driven too much.

I've never paid over $8000 for a MB. So it's a whole different ball game than the one I play in. I think I should try to up my game to a cheap w113 though. I assume it could be a smart move.




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post #9 of 11 (permalink) Old 06-28-2014, 08:43 AM
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for some reason the 230 or 250 sl where never in big demand .[ a 71 280 sl on the other hand is ] since the original engine is no longer there , this car is probably worth more with this 280 se engine . the difference between a 280se and sl is the camshaft , the 280sl spins a little faster , 2 to 300 rpm ??? .
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post #10 of 11 (permalink) Old 06-28-2014, 04:05 PM
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Is your tacho an electric or mechanical drive? I know with W111 coupes, there can be problems with no mechanical drive for the tacho when using the later engines, and the head has to come off to fit the drive.
You would be best off discussing your options and their impact on value on 113.org as it is such a subjective thing. Personally, I am rebuilding a 280 motor and mating it to a floor shift manual to go into my 250 coupe rather than replacing the 250 and auto, as it is the highest output 'standard' motor and has a more desirable trans for a sporty drive. Most people on the sites I hang out on are more aroused at the prospect of this driveline than the standard 250 + auto. Would that translate to extra value come re-sale? Don't know, and don't care, as I am building it for me to drive.
As for engines, the CC will be expensive. Metric Motors has a good reputation, but again they are expensive. I doubt you would recoup the cost of those engines come time to sell, unless you are doing a nut and bolt resto to a super high standard. Note that I bought a finnie sedan that a guy had a resto shop rebuild the motor for - he spent $18k on the motor... he then blew it up and I bought the whole car for $2000.
Good luck, Drew
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