Cylinder Head Tightening Torque And Tightening Sequence

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Replace cylinder head screws.

Tighten screws in the specified sequence in four steps as follows:

Screw in as far as they will go by hand.
Tighten to 40 Nm (30 ftlb.) until secure
Turn 90°further
Turn 90°further

Fig 1: Cylinder Head Screws Tightening Sequence
Courtesy of PORSCHE CARS NORTH AMERICA, INC.