Fit new cylinder head bolts

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Insert new cylinder head bolts and initially tighten so that they are free of play.

Tighten down cylinder head bolts in sequence 1 - 10.

Tightening torque 11 12 1AZ .

Fig 1: Left Cylinder Head Bolts Tightening/Loosening Sequence

Courtesy of BMW OF NORTH AMERICA, INC.

Install and tighten down bolts (1) between cylinder head and timing case cover.

Tightening torque 11 12 2AZ .

Fig 2: Identifying Bolts Between Cylinder Head And Timing Case Cover

Courtesy of BMW OF NORTH AMERICA, INC.

Insert screw (1) of guide rail and tighten down.

Tightening torque 11 31 3AZ .

Fig 3: Identifying Screw Of Guide Rail

Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, install camshafts . See 1131036 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST CAMSHAFT (N63) and 1131032 REMOVING AND INSTALLING/REPLACING LEFT INLET CAMSHAFT (N63) .

Install left INLET AND EXHAUST ADJUSTMENT UNITS .

Assemble engine.