3.69 Rear End in my Euro 280E? - Page 2 - Mercedes-Benz Forum
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post #11 of 23 (permalink) Old 05-22-2019, 11:36 PM Thread Starter
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So, should I be looking for a 2.88 to swap into Rusty here? I am not sure what was original to the car, so I might go with the majority.

Too bad these cars didn't have an overdrive, especially the 280E!
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post #12 of 23 (permalink) Old 05-22-2019, 11:57 PM
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remember that your 280E puts out only 240 nm or 177 lbft of torque and that mercedes had a choice of axles to put in this car yet they decided on 3.58 for probably good reasons.

I wouldn't go lower than 3.07 plus its much cheaper and more plentiful than the 2.88

3.69 and 3.58 is not that big of a difference

Last edited by christuna; 05-23-2019 at 12:13 AM. Reason: thought it was us spec
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post #13 of 23 (permalink) Old 05-23-2019, 12:43 AM Thread Starter
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Ah, I was about to catch your error there!

No, it is not a US-spec car, but I am starting to think that the rear end is original. Since the car started off as a bottom-spec 200E, I wouldn't be surprised if the customers thought putting a higher ratio in it at the factory (did they even do that?) would "make the car faster".

By the way, check out the license plate! That's probably my favorite angle of the car.
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post #14 of 23 (permalink) Old 05-23-2019, 12:56 AM
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so you have a 200 that's been converted to a 280E now we know why you have a 3.69 rear

all 200 came with 3.69

and there was no 200E all gas 200 (M115 or M102) were carbureted

nice euro bumpers and lights
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post #15 of 23 (permalink) Old 05-23-2019, 02:41 AM
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Originally Posted by christuna View Post
...there was no 200E all gas 200 (M115 or M102) were carbureted
Well...

I read somewhere that Mercedes indeed planned a 200E, with the same fuel-injected M102 as the W201 190E. But then they deemed it too expensive, and too close to the fuel-injection-only 230E in price and performance. So, if this is true, then strictly speaking there was no production 200E.


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Last edited by PlaneCrazy; 05-24-2019 at 12:28 AM.
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post #16 of 23 (permalink) Old 05-23-2019, 08:52 AM Thread Starter
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Whoops, I meant to say 200, but a 200E would still be interesting.

Wouldn't it be funny if this car was a 200E prototype, and that was why everything is so weird about it? I figure it would have been difficult and expensive to convert a carburetted 200 to a fuel-injected 280E, so they probably tried to cut corners wherever they could.

As for the diff, do the numbers "044281" mean anything?
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post #17 of 23 (permalink) Old 05-24-2019, 05:48 AM
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Originally Posted by BORG47 View Post
Whoops, I meant to say 200, but a 200E would still be interesting.

Wouldn't it be funny if this car was a 200E prototype, and that was why everything is so weird about it? I figure it would have been difficult and expensive to convert a carburetted 200 to a fuel-injected 280E, so they probably tried to cut corners wherever they could.

As for the diff, do the numbers "044281" mean anything?
they probably mean something, but i havent found any usefull meaning of them.
probably a serial number/id of the diff,

https://mbturbo.com/lsd-differentials/
i tried finding if these numbers had anything to do with LSD, but found no logic behind it.

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post #18 of 23 (permalink) Old 05-24-2019, 08:28 AM Thread Starter
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I'm gonna guess the production number and year, but I can't be certain. The "81" is probably the year, the rest I don't know.
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post #19 of 23 (permalink) Old 05-24-2019, 08:42 AM
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I'm gonna guess the production number and year, but I can't be certain. The "81" is probably the year, the rest I don't know.
i have a bunch of numbers written down at mbturbo.com, tried finding something in common to identify LSD differentials once upon a time, or atleast find if you could do it by those numbers, with the number of diffs i have had i couldnt find any logic behind it at al unfortunately.
(that page linked above)

496328 3.69 no LSD from a 240d w123
756812 3.46 no LSD from a 300d w123
830655 3.46 no LSD from a 300d w123

715609 2.65 LSD non Cat 560SE gen2

Etc etc.

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Last edited by swampmonkey; 05-24-2019 at 08:55 AM.
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post #20 of 23 (permalink) Old 05-27-2019, 01:03 AM
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I think those are just the casting serial numbers. The cast housings then get machined, and the appropriate gearing gets installed according to vehicle. Remember that these diffs were used in the R107, W115, W114, W116 and W126 - there were millions of these cast!


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