Results 1 to 9 of 9

Thread: E36 - M50b20tu Turbo

  1. #1
    Join Date
    Sep 2018
    Location
    Germany
    Posts
    7
    My Cars
    BMW e36 - M50b20tu turbo

    E36 - M50b20tu Turbo

    Hey guys, I am David from Germany and wanted to share my ongoing project with you, an e36 318i going M50b20tu Turbo.

    I am trying to make a lot of pictures, so hopefully someone else can gain something from here .

    Base:
    - e36 318i

    Mods:
    - M50b20tu
    - stock pistons
    - 2x Head gasket with decomp plate
    - Clutch & Flywheel - e*** ftw
    - Holset HX35W
    - Selfmade Topmount Manifold
    - 440ccm injectors
    - Ecumaster DET3
    - RSR Performance widebandlambda KIT with LSU 4.9
    - Compression Ratio around 8,5:1

    The Plan is to run about 1,2-1,5 bar of boost in closed loop and hopefully more than 320hp .

    The pictures show the car atm, some "toys", the engine ( thats what i did yesterday, nothing special just time consuming) and the draft of the new coolant circuit.

    see ya later.

    Edit: I will update the first post with the newest information, to keep things clean here..
    Attached Images Attached Images
    Last edited by LeereLimo89; 04-07-2019 at 11:36 AM. Reason: Changing plans

  2. #2
    Join Date
    Sep 2018
    Location
    Germany
    Posts
    7
    My Cars
    BMW e36 - M50b20tu turbo
    Some Update on this:

    The Manifold is ready soon, have to do the last welds. The Turbo will go through the hood.. ARP Head Studs with decomp + 2x Gasket. More updates coming


    20190316_125923707_iOS.jpg
    20190404_121818633_iOS.jpg

  3. #3
    Join Date
    Nov 2011
    Location
    Greece
    Posts
    77
    My Cars
    2001 530
    7.3:1 compression? why?
    anything lower than 8.5:1 is useless.

  4. #4
    Join Date
    Sep 2018
    Location
    Germany
    Posts
    7
    My Cars
    BMW e36 - M50b20tu turbo
    The compression ratio was pretty much the result of combining the crankshaft, pistons and rods. But i havent told you that the engine is a stock m50b20tü with just the decompression plate now to keep it simply at first. My fault sorry.. big injectors, ecu etc are staying the same.

    Cheers

  5. #5
    Join Date
    Aug 2012
    Location
    Estonia
    Posts
    45
    My Cars
    1995 BMW E34
    I tested the same parts in my engine and it worked just fine. Its not useless, its not necessary*.
    https://www.instagram.com/p/BqConDhg2CV/

  6. #6
    Join Date
    Sep 2018
    Location
    Germany
    Posts
    7
    My Cars
    BMW e36 - M50b20tu turbo
    When calculating with the formula for the otto cycle, it basically is as Raimo says. Its not necessary, but you dont loose much if you go down till 6:1..

    8,5:1 seems to be a common value, but i dont get why this seems like some kind of religion... especially on boosted cars you gain much headroom with low CR

  7. #7
    Join Date
    Nov 2011
    Location
    Greece
    Posts
    77
    My Cars
    2001 530
    yeah you're right. i used wrong word but you got the meaning.
    personally i wouldn't go lower than 9:1 unless regular pump gas was obligatory.
    currently i'm on 17-18 psi on stock engine with 100 octane and water injection.

  8. #8
    Join Date
    Sep 2018
    Location
    Germany
    Posts
    7
    My Cars
    BMW e36 - M50b20tu turbo
    You can do that basically when you have a good ecu etc. Since i am just using the DET3 and dont have the capabilities and money to do proper dyno finetuning, i stick to low compression to not kill the engine with too much boost and a „not super perfect“ ignition map. Since the power difference is max. 5% (calculated) i am fine with the low compression and enough headroom to give it some more boost if i want to..

    Cheers mate

  9. #9
    Join Date
    Jan 2020
    Location
    milan italy
    Posts
    1
    My Cars
    z3 1995
    hi sorry can you tell me how did you connect det3 to the control unit? i have been trying for two weeks and it is not receiving rpm from the cas sensor ????

Similar Threads

  1. E36 e36 m3 turbo slavage title feeler
    By m3boostin in forum 3 series & Z Series
    Replies: 29
    Last Post: 10-23-2012, 11:54 PM
  2. E36 WTB: E36 M50 turbo kit
    By shocktenn in forum BMW Parts Wanted sponsored by Bavarian Auto Recycling
    Replies: 1
    Last Post: 03-02-2012, 11:50 AM
  3. E36 WTB: E36 M3 Turbo
    By newdawnfades in forum 3 series & Z Series
    Replies: 2
    Last Post: 02-10-2011, 05:53 AM
  4. E36 e36 s52 turbo engine rebuild kit
    By luikang325i in forum Engines, Performance Parts & Software
    Replies: 0
    Last Post: 10-28-2010, 10:04 PM
  5. E36 WTB: E36 M3 Turbo or Supercharger Kit (in CA)
    By imperialboy in forum Race Cars & Track Parts
    Replies: 1
    Last Post: 10-02-2010, 05:00 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •