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Thread: My supercharged M50B25TU drowned, I need advice

  1. #1
    Join Date
    Nov 2007
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    Philippines
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    168
    My Cars
    BMW e36 316i M50 AA SC

    My supercharged M50B25TU drowned, I need advice

    I own a 1997 316i sedan formerly turboed then I decided to get an engine swap to a M50B25TU with a Active Autowerke supercharger kit. Recently I just got the car for the following mods: UUC fly wheel, uprated clutch, LSD (3.91), mishimoto radiator, electric fan, stewart pump, 140W alternator and a pair of Recaro speeds. After 2 months of waiting for parts and installation I was able to get the car from the shop. The next morning it rained hard and it took only a few seconds while driving I noticed my engine stalling. FLASH FLOOD. So my engine is dead now, broken rods and some cracks to the block.

    I'm here thinking about getting an S52 but use my C30 rotrex supercharger kit. Do you think it's a good idea or stick with an M50 and rebuild mine?

    I'm just sad I only got to drive it for less than 10kms then disaster struck literally.

    M50B25TU swap and AA supercharger kit
    https://www.facebook.com/e36project316ievolution/

  2. #2
    Join Date
    Jun 2005
    Location
    New England
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    25,402
    My Cars
    F90 M5; E36 M3 Turbo
    Buy a used M52 or S52. Either will give you more displacement tban the M50. Since your motor hydrolocked the block could be damaged inside and not rebuildable. Only one way to find out.

  3. #3
    Join Date
    Nov 2007
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    Philippines
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    168
    My Cars
    BMW e36 316i M50 AA SC
    so would you consider the S52 a good swap for my M50? is it more difficult to maintain or more or less the same?

    M50B25TU swap and AA supercharger kit
    https://www.facebook.com/e36project316ievolution/

  4. #4
    Join Date
    Feb 2011
    Location
    Virginia
    Posts
    3,043
    My Cars
    97' m52 turbo
    Wow, that sucks. Sorry to hear your bad news.

    I would go with an M52 platform. 328 parts are easier to find than M3 and are considerably cheaper. You could always stick with the m50 as well, there usually even more cheaper and easier to find than the m52's/S5X

  5. #5
    Join Date
    Nov 2007
    Location
    Philippines
    Posts
    168
    My Cars
    BMW e36 316i M50 AA SC
    I've finally decided to go with a S52, I just hope the C30 rotrex supercharger will be fine because I don't want to spend on a new c38

    M50B25TU swap and AA supercharger kit
    https://www.facebook.com/e36project316ievolution/

  6. #6
    Join Date
    Nov 2007
    Location
    Philippines
    Posts
    168
    My Cars
    BMW e36 316i M50 AA SC
    OMG i just payed for an S52 and it costs so much especially shipping it to my country!

    M50B25TU swap and AA supercharger kit
    https://www.facebook.com/e36project316ievolution/

  7. #7
    Def's Avatar
    Def is offline Lead Disagreement Eng PE
    Join Date
    Aug 2002
    Location
    Seattle, WA
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    13,547
    My Cars
    SW22, Volt
    Well, being only available in a US spec E36 M3 does make them not super common as far as BMW engines of that vintage go...

  8. #8
    Join Date
    Nov 2007
    Location
    Philippines
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    My Cars
    BMW e36 316i M50 AA SC
    I think it was a good purchase and a lot of aftermarket stuff are available for the S52 compared to a M3 euro engine. Can't for it to get here. I'm also glad that I can use my C30 supeprcharger. I was able to see the archives of active autowerke and the older kits used the C30.

    M50B25TU swap and AA supercharger kit
    https://www.facebook.com/e36project316ievolution/

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