Tightening Specifications For Exhaust Manifold/Turbocharger

Fig 1: Exhaust Manifold/Turbocharger Nuts Tightening Sequence

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. 1-9  - Nut, M8 Initial tightening: → Initial tightening: 20 Nm (15 ftlb.) 
2. 1-9  - Nut, M8 Final tightening: → Final tightening: 27 Nm (20 ftlb.) 

Tightening sequence 1 to 9 for both cylinder banks - always starting at the timing-case cover!