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Home >> BMW >> 2007 >> Z4 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - Tightening Torques - E90-E91 (-08); E85/86/92/E93 (N52) >> 11 Engine block >> 11 11 Engine block (N52)

11 11 Engine block (N52)

ENGINE BLOCK TIGHTENING SPECIFICATION

  Type Thread Tightening specification Measure
1AZ Main bearing bolts (steel bolts 10.9) N52 M10x100 Replace screws  
      Jointing torque 20 Nm
      Torque angle 70 °
2AZ Bedplate
Aluminium screws/bolts are marked with blue paint.
N52 M10x27 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
 
      Jointing torque 15 Nm
      Torque angle 90 °
3AZ Bedplate
Aluminium screws/bolts are marked with blue paint.
N52 M8x37 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
 
      Jointing torque 10 Nm
      Torque angle 90 °
4AZ Bedplate
Aluminium screws/bolts are marked with blue paint.
N52 M10x41 Replace screws
Thread repairs exclusively with Al Helicoil.
Jointing torque and angle of rotation must be observed without fail.
 
      Jointing torque 15 Nm
      Torque angle 90 °
5AZ Oil spray nozzles to engine block N52   Hollow bolt 12 Nm