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Thread: S58 main bearing bolt torque?

  1. #1
    Join Date
    Sep 2022
    Location
    Richmond, CA
    Posts
    1
    My Cars
    Porsche 914 x 4

    S58 main bearing bolt torque?

    Anyone out there know the correct torque spec for the S58 main bearing bolts? Thanks.

  2. #2
    Join Date
    Jun 2002
    Location
    Aberdeen, NC (yes, again)
    Posts
    23,673
    My Cars
    E39M5, E500 4WD
    Welcome to the forum. You'd have made it a lot easier to give you this information if you'd have told us the model and year of the car/engine in question. This is the way we make sure we access the correct BMW resources. In lieu of this information, I have chosen a G82 M4 coupe.


    Assuming you've read the numbers from the crankshaft and purchased the correct classification bearings (green/blue/brown), the torques are:


    Main bearing cap to crankcase
    M10x85 11.9
    Replace screws.
    1. Tightening torque
    25Nm
    2. Angle of rotation
    65°
    3. Angle of rotation
    65°

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

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