Tightening Specifications For DIE-CAST Valve Covers

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Fig 1: Valve Cover Tightening Sequence (Cylinders 1-3)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1-14 - Always observe the specified tightening sequence!

1+2 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.)

13+14 - Screw, M8 x 35 → Tightening Torque: 23 Nm (17 ft. lb.)

9-12 - Aluminum screw, M8 x 35 → Initial tightening: 10 Nm (7.5 ft. lb.) → Final tightening: +90°

3-8 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.) → Final tightening: +90°

1+2 - Loosen → Torque angle: -180°

1+2 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.) → Final tightening: +90°

Fig 2: Valve Cover Tightening Sequence (Cylinders 4-6)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1-14 - Always observe the specified tightening sequence!

1+2 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.)

13+14 - Screw, M8 x 44 → Tightening Torque: 23 Nm (17 ft. lb.)

10-12 - Aluminum screw, M8 x 35 → Initial tightening: 10 Nm (7.5 ft. lb.) → Final tightening: +90°

3-9 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.) → Final tightening: +90°

1+2 - Loosen → Torque angle: -180°

1+2 - Aluminum screw, M6 x 30 → Initial tightening: 4 Nm (3 ft. lb.) → Final tightening: +90°