11 12 719 Resurfacing cylinder head lower face (N63 hybrid)

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove cylinder head. See LEFT CYLINDER HEAD or RIGHT CYLINDER HEAD .

Cylinder head disassembled:

Check evenness of cylinder head sealing face with a standard straightedge (1).

NOTE: Maximum plane deviation: longitudinal 0.10 mm.

Fig 1: Checking Longitudinal Evenness Of Cylinder Head Sealing Face Using Standard Straightedge

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Maximum plane deviation: transversal 0.05 mm.

Machining limit: see CYLINDER HEAD WITH VALVE SEAT COVER - TECHNICAL DATA and CYLINDER HEAD WITH LID - TECHNICAL DATA .

Fig 2: Checking Transversal Evenness Of Cylinder Head Sealing Face Using Standard Straightedge
Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: A cylinder head gasket (+REP) 0.3 mm thicker than usual can be obtained for machined (resurfaced) cylinder heads.

Fig 3: Identifying Gasket (+REP) On Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.