Tightening Specifications For Valve Cover

Fig 1: Valve Cover For Cylinders 1-3 Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1-14 - Always observe specified tightening sequence

1 + 7 - Screw, M8 x 44 → Initial tightening: 20 Nm (15 ftlb.) → Final tightening: +30°

4, 5 + 11 - Screw, M6 x 36 → Initial tightening: 10 Nm (7.5 ftlb.) → Final tightening: +30°

6 - Aluminum screw , M8 x 35/replace → Initial tightening: 10 Nm (7.5 ftlb.) → Final tightening: +90°

2, 3 + 8-10 + 12 - Aluminum screw , M6 x 30/replace → Initial tightening: 4 Nm (3 ftlb.) → Final tightening: +90°

13 + 14 - Screw, M8 x 35 → Initial tightening: 20 Nm (15 ftlb.) → Final tightening: +30°

Fig 2: Valve Cover For Cylinders 4-6 Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1-14 - Always observe specified tightening sequence

1 + 4 - Screw, M8 x 44 → Initial tightening: 20 Nm (15 ftlb.) → Final tightening: +30°

2 - Screw, M6 x 36 → Initial tightening: 10 Nm (7.5 ftlb.) → Final tightening: +30°

5 - Aluminum screw , M8 x 35/replace → Initial tightening: 10 Nm (7.5 ftlb.) → Final tightening: +90°

3 + 6-12 - Aluminum screw , M6 x 30/replace → Initial tightening: 4 Nm (3 ftlb.) → Final tightening: +90°

13 + 14 - Screw, M8 x 35 → Initial tightening: 20 Nm (15 ftlb.) → Final tightening: +30°