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Thread: Do I want a turbo M50?

  1. #1
    Join Date
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    Do I want a turbo M50?



    Hi all, have a '92 325is with the non-vanos M50. Had the car for 18 years and now considering going turbo or swapping in an S50.

    Mainly the car is used for canyon runs, monthly auto-x's and the occasional small road trip.

    If I would go turbo, I would like to build a system with the following qualities:

    - Excellent reliability
    - Minimized turbo lag, suitable for auto-x
    - Little or no cutting body work
    - Decent fuel mileage

    So please let me know your thoughts.

    Cheers
    CARS : 02.92 325is | 06.72 2002 | WANTED : MarkD Chip (M50NV 402DME)

  2. #2
    Join Date
    Oct 2005
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    1993 BMW 325i Coupe
    S50 swap is probably cheaper in the long run. For a reliable and suitable turbo build, look to have a budget of at least $10k.

    E36 1993 325i Coupe - Gt3582 turbo build COMPLETE!
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  3. #3
    Join Date
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    1998 M3, 2001 530i
    You'll be more competitive in autocross keeping it stock...

    would take the S50 with the stock tune over a budget turbo setup, if you can find one.

    Sent from my LM-V350 using Tapatalk

  4. #4
    Join Date
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    I would vote turbo with a small fast spooling 57mm turbo. An m50 with 15 lbs of boost will shit all over an S50.


    86 325es, 2.8L m50, S476sxe, ProEFI 128 ecu, e85, solid rear axle, TH400 trans, 28x10.5w slicks, zip ties, popsicle sticks, tape
    best time 9.06 @ 151.8 mph, best 60 foot 1.30

  5. #5
    Join Date
    Oct 2005
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    Quote Originally Posted by someguy2800 View Post
    I would vote turbo with a small fast spooling 57mm turbo. An m50 with 15 lbs of boost will shit all over an S50.
    It definitely would, however reliability comes down to many factors and if Op is on a shoestring budget, reliability goes out the window hehe

    E36 1993 325i Coupe - Gt3582 turbo build COMPLETE!
    DomsE36Garage Youtube Channel
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  6. #6
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    Quote Originally Posted by dominator293 View Post
    It definitely would, however reliability comes down to many factors and if Op is on a shoestring budget, reliability goes out the window hehe

    Did he mention shoe string budget?

    If not, yeah... you want a turbo M50. stock US S50 without boost aint it.

  7. #7
    Join Date
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    Quote Originally Posted by et89 View Post
    Did he mention shoe string budget?
    He never said he wasn't haha. But I did say 'if' he's on a shoestring budget, S50 would be cheaper in the long run.

    E36 1993 325i Coupe - Gt3582 turbo build COMPLETE!
    DomsE36Garage Youtube Channel
    DomsE36Garage Instagram

  8. #8
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    If you can weld and fit pipe, you can do it for about $5-6k. Paying someone else for that is going to add up. If you do mild boost, say less than 1 bar, don't do burnouts at every stop sign, should be reliable. So, reliability is related to your driving style. Remember, everything downstream of the crankshaft will be under the additional stress. As far as lag, you should still have stock response until boost starts to come on. You don't need a turbo for canyon runs or auto-x, but it sure is fun for open road pulls.
    Tom
    Currently 1995 M3 manual coupe, 1993 325is
    Past cars
    2003 530i
    1998 528i
    1995 530i
    1988 528e
    1988 535i
    1987 2.7i
    1972 2002

  9. #9
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    Quote Originally Posted by h82crash View Post
    If you can weld and fit pipe, you can do it for about $5-6k. Paying someone else for that is going to add up. If you do mild boost, say less than 1 bar, don't do burnouts at every stop sign, should be reliable. So, reliability is related to your driving style. Remember, everything downstream of the crankshaft will be under the additional stress. As far as lag, you should still have stock response until boost starts to come on. You don't need a turbo for canyon runs or auto-x, but it sure is fun for open road pulls.
    This
    If liberty means anything at all, it means the right to tell people what they do not want to hear.
    ― George Orwell

  10. #10
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  11. #11
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    I don't know if this is what you are looking for, but I need if out of my garage.

    https://www.facebook.com/groups/1788...62228467436849

    https://www.bimmerforums.com/forum/s...9#post30633189

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