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Home >> BMW >> 2019 >> M4 CS >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Tightening Torques -- M4 (F82 & F83) >> 11 11 Engine Block
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11 11 Engine Block

TIGHTENING TORQUE SPECIFICATION (ENGINE BLOCK)

  Type Thread Tightening specifications Dimension
1AZ Main bearing bolts (steel bolts 10.9) S55 M10x100 Replace screws
Observe tightening sequence
Jointing torque
Angle of rotation
20 Nm
70°
2AZ Bedplate
Aluminium screws.
S55 M10x27 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
Angle of rotation
15 Nm
45°
3AZ Bedplate
Aluminium screws.
S55 M8x37 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
Angle of rotation
8 Nm
90°
4AZ Bedplate
Aluminium screws are marked with blue color.
S55 M10x41 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
Angle of rotation
15 Nm
90°
5AZ Oil spray nozzles to engine block S55   Hollow bolt 12 Nm
6AZ Screw plug, gear case upper section S55 M22x1.5 Replace screw with sealing ring 50 Nm
7AZ Screw plug, gear case lower section S55 M16x1.5 Replace screw with sealing ring 27 Nm
8AZ Transmission cover plate to crankcase S55 M6x16 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
Jointing torque
Angle of rotation
4 Nm
90°