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Home >> BMW >> 2018 >> M4 2D Convertible, Automatic DCT Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Tightening Torques -- M4 (F82 & F83) >> 11 12 Cylinder Head With Lid

11 12 Cylinder Head With Lid

TIGHTENING TORQUE SPECIFICATION (CYLINDER HEAD WITH LID)

  Type Thread Tightening specifications Dimension
1AZ Cylinder head bolt S55 M11x173 Replace screws.
Step 1: Jointing torque
Step 2: Angle of rotation
Step 3: Angle of rotation
30 Nm
90°
180°
2AZ Cylinder head bolt S55 M9x30
M9x70
  22 Nm
3AZ Cylinder head cover to cylinder head. S55 M6   9 Nm
4AZ Towing lug to cylinder head S55   Hand-tighten to limit position  
5AZ Ignition coils and injector slot to cylinder head S55 M6x35   9 Nm
6AZ Wiring harness to cylinder head cover S55 D10 L43, 5 Self-tapping screw (ball pin) 7 Nm
7AZ Heat shield support to cylinder head S55 M6x16   10 Nm
8AZ Ground strap to rear of cylinder head S55 M6x16   8 Nm
9AZ Battery voltage wire holder to cylinder head S55 M7x18   13 Nm
10AZ Blow By line with heating to clean air pipe of cylinder 1-3 S55 Ejot drive train 50x 20   3 Nm
11AZ Screw plug in oil chamber S55 M16x1.5 Replace screw with sealing ring. 27 Nm
12AZ Sealing flange of servomotor to cylinder head cover S55 M6x18 Self-tapping screw 6 Nm
13AZ Stud bolt of exhaust manifold (turbocharger) to cylinder head S55 M7   8 Nm
Flange to assembly jig     
M14X30 Tightening torque  135 Nm