Sacrilege? - altering from original transmission. - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 07-15-2012, 05:59 PM Thread Starter
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Sacrilege? - altering from original transmission.

I have a rock solid 1967 250S. Runs like a champ but, as expected, is weaker than water. Bought a place high on a ridge and it is like pulling teeth to get the car up. Am considering changing automatic transmission out for a manual. Even the "Car and Driver" review from 1967 says that the automatic transmission in that model is a bad idea because the car is so weak. Clearly the test driver lived on a mountain, too!

Is this possible? Practical? Sacrilege???
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post #2 of 4 (permalink) Old 07-15-2012, 07:38 PM
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Hi, welcome to BW forums. Forgive me for perhaps stating the obvious since I don't know if you've owned older cars before or not, but do you downshift when going up the hills? There was a separate transmission manual issued for these cars at the time to help "teach" Americans how to properly shift the cars. I like to think of the autos as almost a manu-matic in the sense that they aren't cars you put in P and drive all day, you are supposed to downshift to get them up inclines. After I figured that out for myself I have never felt the car lacking when climbing into the hills.

If you do go with a manual I say do what you enjoy. Just today I saw Roy Spencer's SE Coupe with a custom (more)modern shifter on the floor and he said it made the trip from NorCal to Oregon a real treat.

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post #3 of 4 (permalink) Old 07-15-2012, 07:51 PM Thread Starter
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Thanks for the reply. Yes, I do downshift - I call this transmission a semi-automatic because of all the input required in this terrain. This is my second classic Benz but the first after moving here. I just think a manual transmission would seem much more intuitive.

How tough a change would it be on this car?
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post #4 of 4 (permalink) Old 07-16-2012, 10:16 AM
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Sacrilege? Yes- someone out there will probably have an annurism if you mated a non-native tranny to your engine. But I say go for it - your enjoyment of the car will only increase as a result.

You'd need to find something that directly bolts onto your engine, for the easiest swap. I've seen discussion threads similar to this one, and I've never seen an easy or quick answer that would support what you need. This is not to say that Mercedes didn't make a manual transmission that'll bolt directly onto your engine - I've just never seen it. I would imagine Mercedes made manual tranny versions of the car though...

There are a number of outfits that can produce adapter plates (Kennedy Engineering is an example, though they do a lot of Porsche stuff. Not sure if they do Benz) that will allow *any* tranny to be mated to your engine.

I'd be interested in hearing what your solution is ...

Last edited by Grubeguy; 07-16-2012 at 10:19 AM.
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