C200K Race Car Build

Discussion in 'Performance Lounge' started by Kevin Bird, Oct 29, 2015.

  1. Kevin Bird

    Kevin Bird New Member

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    Hi

    I'm new here and hope someone can help!

    I'm about to embark on race car build, if the project goes ahead I'll start a separate thread

    The plan is to convert a W203 C200K (M111) to turbo. It will have a weld in cage, AP brakes, Ohlins suspension, MoTec ECU etc etc

    But I need to shorten the standard diff ratio from 3.27 to 3.64 or 3.9 which I think was fitted to a non Kompressor C180 manual but I can't find a definitive list of final drive ratios any where despite hours of web searching, can anyone help?

    Thanks
     
    Last edited: Oct 29, 2015
  2. Hybrids

    Hybrids Active Member

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    Can't help with your diff question, but good luck with the build and I look forward to the thread. Which Series or Championship are you looking at racing with?
     
  3. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    3.91 is found in the c180, it's a small case non abs diff.
     
  4. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    Thanks, I could only see the 3.91 fitted to the W202, was it also fitted to the w203?
     
  5. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    Hopefully the Castle Combe Saloon Car Championship
     
  6. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    Lowest I've seen in a w203 is 3.46, which gearbox are you planning to use?
     
  7. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    In theory you could swap the 3.91 from the w202, but only if you had the half shafts and propshaft to match.
     
  8. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    I've also found a 3.67 from a C180 W203 but a 3.91 would be preferable. I need to run the standard gearbox casing but the internals can be changed/modified

    Is it possible to swap the internals to a W203 diff casing?
     
  9. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    You could swap the internals if you have the same size diff casing, depends what size diff your starting with.

    You can get a 3.92 in a w210, that would be a medium case diff so should bolt straight into a w203 with that size diff.

    There is also a 4.18 that came in an early w124 200d estate, but that is rarer than rare.
     
    Last edited: Nov 5, 2015
  10. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    Thanks for the info and sorry for the late reply

    This project is looking too difficult so I now have a C200K for sale!
     
  11. bolide

    bolide Hardcore MB Enthusiast

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    It's the end of the season now - the right time to buy a ready-prepared and fully sorted car!

    I'm sure if you chat to a few people who compete in that championship you'll find something for sale

    Nick Froome
     
  12. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    I wish! Do you know of anything?
     
  13. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    Reading through the rules, I would be using a w202 c250 turbodiesel. Should be able to dominate fairly easily with that.
     
  14. bolide

    bolide Hardcore MB Enthusiast

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    The Castle Combe championships are pretty competitive. Great circuit, though, and one I'd love to race on again

    Nick Froome
     
  15. OP
    OP
    Kevin Bird

    Kevin Bird New Member

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    My old car, a SEAT Leon is currently quickest, it has 585bhp unfortunately no diesel is going to be competitive against it
     
  16. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    What torque are you making? Crank or wheel power?
     
  17. dpw864

    dpw864 Active Member

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    A little off topic, but what is that car in your signature? I love that livery! Looks like DTM?
     
  18. carat 3.6

    carat 3.6 Hardcore MB Enthusiast

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    It is indeed DTM :thumb:

    [​IMG]

    [​IMG]

    [​IMG]
     
  19. mazza

    mazza Hardcore MB Enthusiast

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    sportline suspension?? i was told the red painted cars were much faster, special paint.

    mazza
     
  20. nick mercedes

    nick mercedes MB Club Veteran

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    What engine does it have???
     

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