V12 Engine M120 - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 11-21-2006, 12:46 PM Thread Starter
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V12 Engine M120

I am new to the community but look forward to the correspondence.
I am just beginning the process of building an exact scale replica of a prewar 1938/39 Mercedes Benz W154 single seat Grand Prix car.I obtained the actual blue prints of this car from the MB museum archives people many years ago.
This car had a 3 liter V12 that produced 425 hp.
I am intending to use the V12 engine from as early as possible S600 [from 1994 to 1998.
I need advise on the feasibility of using a North American spec V12 from an S600 which only came with an automatic trans.Will the engine computer management system be difficult to deal with since I intend to couple the V12 to a German spec 5 speed manual?
Or will I be simpler to just obtain a Euro spec V12 with the manual attached out of a European Benz?
I intend to race the car at historic race car venues.
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post #2 of 9 (permalink) Old 11-21-2006, 12:52 PM
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Originally Posted by tungstenjh
I need advise on the feasibility of using a North American spec V12 from an S600 which only came with an automatic trans.Will the engine computer management system be difficult to deal with since I intend to couple the V12 to a German spec 5 speed manual?
Or will I be simpler to just obtain a Euro spec V12 with the manual attached out of a European Benz?
The M120 was automatic-only in Europe as well. That's not to say you can't jerryrig a manual, only that you won't find such a combination in Europe either.

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post #3 of 9 (permalink) Old 11-21-2006, 01:00 PM Thread Starter
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Thanks for the short answer!I will now scour european countryside for a manual trans.
Thks
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post #4 of 9 (permalink) Old 11-21-2006, 01:09 PM
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Originally Posted by tungstenjh
Thanks for the short answer!I will now scour european countryside for a manual trans.
Thks
tungstenjh
Well, you may not need to do that. You might be able to adapt a Tremec T56 with just as much ease (or difficulty).

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post #5 of 9 (permalink) Old 11-21-2006, 01:20 PM
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Is it safe to use a manual transmission with a V12 engine because of the high torque? At least current manual transmissions do not handle the torque of the biggest engines.

Often if both options are available, the engine torque for the manual transmission car is limited to a lower value. Like the current E280CDI V6, 400 Nm torque for the manual and 440 Nm for the automatic gearbox.
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post #6 of 9 (permalink) Old 11-21-2006, 01:22 PM
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Is it safe to use a manual transmission with a V12 engine because of the high torque?
The Tremec is safe.

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post #7 of 9 (permalink) Old 11-21-2006, 02:32 PM
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The Tremec is safe.
Seeing as how it's used in the Aston V12 Vanquish and the Corvette Z06 and is probably the most bulletproof part of either car, I tend to agree that it will hold up fine. I shudder to think what one would cost in a crate, though.

Sounds like a very cool project.
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post #8 of 9 (permalink) Old 11-21-2006, 11:46 PM
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The Tremec is safe.
OK, didn't know anything like that existing. OP went to the German countryside to look after those, I hope they grow there :-)
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post #9 of 9 (permalink) Old 04-26-2011, 01:29 PM
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bmw 850ci's come with a manual 6 speed maybe its better to transplant one of those. the 850ci is also a v12. also anyone know if the 600 r129 chassis comes with the slots for a clutch like on the auto w124's?
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