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Thread: M50 turbo build

  1. #1
    Join Date
    Apr 2017
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    Florida
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    E36

    M50 turbo build

    First timer on forum and turbo build
    Any advice is greatly appreciated
    Purchased a cx turbo kit / g35 top mount.
    Total stock motor with 150,000 mile and seams good
    Any advice on maf and injectors
    Motor has vanos
    My tuner was hoping to use existing ecu and download programming
    Thanks for any input
    Any idea on potential power this build could bring

  2. #2
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  3. #3
    Join Date
    Oct 2010
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    My Cars
    96 332IS 6466 turbo
    Can we see some pictures ? Of the turbo kit ?
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
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  4. #4
    Join Date
    Apr 2017
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    Florida
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    My Cars
    E36
    2nd thoughts on the cx kit. Saw some poor reviews
    Planing on raising budget
    Weekend ride and hope to start tracking in future
    Hoping to order parts tomorrow
    Any advice is appreciated

    - - - Updated - - -

    how do you post pics

  5. #5
    Join Date
    Nov 2014
    Location
    Bellingham, Wa
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    My Cars
    1995 325i, 1998 M3 Coupe
    Maybe consider buying a used kit that's proven to work well? Something like this

    https://www.bimmerforums.com/forum/s...2-E36-M3-96-99

  6. #6
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    97' m52 turbo
    If I were OBDI I would have bought that kit

  7. #7
    Join Date
    Apr 2017
    Location
    Florida
    Posts
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    My Cars
    E36
    Looks like purchasing rapidspool top mount manifold
    Precision 6262 turbo
    CX intercooler kit
    1000 cc injectors
    Mechanic is leaning towards megasquirt on tune
    Keeping motor stock on hg and bolts
    And feed back on what it may make?
    How many pounds to be fairly safe
    Thanks for feedback

  8. #8
    Join Date
    Oct 2010
    Location
    Manchester, N.H.
    Posts
    16,712
    My Cars
    96 332IS 6466 turbo
    8-10
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  9. #9
    Join Date
    Feb 2012
    Location
    Birmingham, Alabama, USA
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    My Cars
    1995 BMW M3
    Stock hg and bolts?
    Bad idea..

  10. #10
    Join Date
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    F90 M5; E36 M3 Turbo
    What fuel? E85? 91? 93? 20 year old stock HG now?

  11. #11
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    I appreciate it
    And feedback on potential power could be made

  12. #12
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    1995 BMW M3
    Not enough to be worth going turbo. Nothing from a 6262 is going to be safe on a stock hg and bolts.

  13. #13
    Join Date
    Apr 2017
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    Florida
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    My Cars
    E36
    93 on fuel
    I believe original hg
    Thinking of changing if necessary
    Mechanic mentioned waiting for signs of failure, not sure about that route

  14. #14
    Join Date
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    1995 BMW M3
    Step 1: fire said mechanic
    Step 2: be glad you fired said mechanic
    Step 3: ?!?!?!?!
    Step 4: Profit

    You are paying a shop to do all this work? You are nuts not having them do the hg and studs now.

  15. #15
    Join Date
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    Mechanic/ friend, I'm only assisting
    I agree on doing it right and taking the advice

  16. #16
    Join Date
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    86 325es
    First sign of head gasket failure is that it says bmw on the valve cover. At a bare minimum put head studs in it. I wouldn't try to make more than 8-10 lbs of boost at stock compression and 93 gas. Should be good for 300 whp or so on a 2.5. Plan on getting a clutch as well.


    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

  17. #17
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    E36
    Planning on going with the new head gasket and studs in order to pull more power. What clutch did they recommend? The car was originally 318 I, I need to start researching what to use for the reran any recommendations.

    - - - Updated - - -

    Rear end

  18. #18
    Join Date
    Oct 2010
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    96 332IS 6466 turbo
    Quote Originally Posted by Thompson501 View Post
    Planning on going with the new head gasket and studs in order to pull more power. What clutch did they recommend? The car was originally 318 I, I need to start researching what to use for the reran any recommendations.

    - - - Updated - - -

    Rear end
    MLS .140 or Cutring/spacer combo.
    1996 332IS
    Built 3.2
    CES/Steed TS Precision 6466, spraying a "$π!℅" load of meth.
    Technique Tuning 80# tune.
    1/4 mile 10.84 @ 136.72
    Your 1 and only stop for all your BMW performance needs
    WWW.CESMOTORSPORT.COM

  19. #19
    Join Date
    Apr 2006
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    Minnesota eh?
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    86 325es
    The 318's came with a smaller rear diff, axles, and driveshaft than the 6 cylinder cars as well. I think the 318i also came with a getrag 250 trans which should work at the power level your talking about but is not the strongest thing in the world either.


    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

  20. #20
    Join Date
    Apr 2017
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    E36
    What is recommended for thicker hg and clutch.
    Regarding the 318 rear end, run till it breaks?
    Can it be modified or what replacement will work

  21. #21
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    Big question, run e85 instead of MLS .140 or Cutring/spacer combo?

  22. #22
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    97' m52 turbo
    Depends if you have E85 available in your area. I have it available to me but about 30-40 minutes away but I'm still choosing to run 93 octane + meth.

    Even if you decide to run E85, its still recommended to use ARP studs, so you'll still have to do head work anyway. In which case you might as well do the HG/Spacer while you're at it. If you ever decide to sell the car it will be much more desirable if it can run pump fuel - keep that in mind. If all you have is 91 then I would either considering running a reliable meth setup with fail safe options or running the e85. If your thinking of running e85 to avoid work, think twice because the project itself is a ton of that if done properly.

    Make sure you have at least $5,000 (that's for just parts excluding items that will needed later from the increased power output) grand to spend on this car and if not I hope its not your DD.

    I'm about $4,500 in and I still needed Tune, MAF, Injectors, gauges, monitoring software, welding work, and other misc items.

    With that said a ton of google searches and the awesome people on this forum have taught me all of that^ and have guided me through my project, so search around.

    oh, and listen to Butters
    Last edited by 328iFun; 05-04-2017 at 11:03 AM.

  23. #23
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    Yes e85 is no problem
    Not concerned with resale
    Started out on low budget but now focused on doing it right

  24. #24
    Join Date
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    Quote Originally Posted by Thompson501 View Post
    Yes e85 is no problem
    Not concerned with resale
    Started out on low budget but now focused on doing it right
    I would think with paying a mechanic you would be looking at around 6500-8000 mark for labor included

  25. #25
    Join Date
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    86 325es
    If you run e85 you won't have any problem with a stock headgasket and studs, but does require some fuel system mods to support it.


    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

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