Necessary preliminary work

• Check TIMING  .
• Remove INLET AND EXHAUST ADJUSTMENT UNIT ON RIGHT SIDE  .

Release screw (1).

Fig 1: Identifying Screw Of Guide Rail

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Release bolts (1) at front from cylinder head.

Fig 2: Identifying Bolts At Front From Cylinder Head

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Release cylinder head bolts in sequence (10 to 1).

Remove all cylinder head bolts with washers.

Fig 3: Identifying Cylinder Head Bolts Releasing Sequence

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Clean sealing faces of cylinder head and engine block; if necessary, remove gasket debris compound with special tool 11 4 470 . Make sure no gasket debris drops into the oil and coolant ducts.

Threaded bores in engine block must be free of dirt and oil (risk of cracking). 

Check CYLINDER HEAD FOR LEAKS  .

Check CYLINDER HEAD SEALING FACE  for surface evenness.

Coat joint between engine block and timing case cover with Drei Bond 1209 (refer to BMW Parts Service).

Fig 4: Locating Drei Bond 1209 At Joint Between Engine Block And Timing Case Cover

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Check fitting sleeves (1) for damage and correct installation position.

Fit new cylinder head gasket (2).

Fig 5: Identifying Fitting Sleeves And Cylinder Head Gasket

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Put the cylinder head on.

Do not wash off bolt coating.

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

Tighten down the cylinder-head bolts in order 1... 10.

Tightening torque: 11 12 1AZ .

Fig 6: Right Cylinder Head Bolts Tightening/Loosening Sequence

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

Tightening torque: 11 12 2AZ .

Fig 7: Identifying Bolts Between Cylinder Head And Timing Case Cover

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

Tightening torque: 11 31 3AZ .

Fig 8: Identifying Screw Of Guide Rail

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If necessary, install camshafts  . See 1131034 REMOVING AND INSTALLING/REPLACING RIGHT INLET CAMSHAFT (N63)  and 1131038 REMOVING AND INSTALLING/RENEWING RIGHT EXHAUST CAMSHAFT (N63) .

Install INLET AND EXHAUST ADJUSTMENT UNIT ON LEFT SIDE  .

Assemble engine.