Tightening Specifications For Cylinder Head

Fig 1: Cylinder Head Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1 to 8  - 1st initial tightening → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd initial tightening → Tightening torque: 50 Nm (37 ftlb.)  ; loosen by 2 turns  → Torque angle: 720°  ; 1st turn → Tightening torque: 30 Nm (22 ftlb.)  ; 2nd turn and final tightening (torque angle) → Torque angle: 110°