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21, Turbocharging

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Information 

Tighten screw-type clamps for securing pressure and intake pipes and pressure and suction hoses to charge-air cooler and turbocharger to > Tightening torque 5.5 Nm (4 ftlb.) 

Fig 1: Turbocharger, Cylinders 1 To 4 - Cooling Components Location With Torque Specification
G15197584Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Turbocharger, cylinders 1 to 4 - cooling

1  Coolant return line for turbocharger > Tightening torque 30 Nm (22 ftlb.) 
2  Coolant supply line for turbocharger > Tightening torque 30 Nm (22 ftlb.) 
3  Clamp
4 Coolant supply hose for turbocharger
5  Turbocharger; exhaust manifold/turbocharger module
Fig 2: Turbocharger, Cylinders 5 To 8 - Cooling Components Location With Torque Specification
G15197585Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Turbocharger, cylinders 5 to 8 - cooling

1  Coolant return line for turbocharger > Tightening torque 30 Nm (22 ftlb.) 
2  Coolant supply line for turbocharger > Tightening torque 30 Nm (22 ftlb.) 
3  Coolant supply line holder to oil guide housing > Tightening torque 10 Nm (7.5 ftlb.) 
Fig 3: Oil Circuit For Turbocharger, Cylinders 1 To 4 Components Location With Torque Specification
G15197586Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oil circuit for turbocharger, cylinders 1 to 4

1  Turbocharger vent line for cylinders 1 to 4; vent line to turbocharger oil extraction line > Tightening torque 35 Nm (26 ftlb.)  and vent line retaining clip to collection pipe > Tightening torque 6.5 Nm (5 ftlb.) 
2  Turbocharger oil feed line for cylinders 1 to 4; turbocharger oil feed line to connection piece > Tightening torque 40 Nm (30 ftlb.)  ; turbocharger oil feed line to cylinder head > Tightening torque 35 Nm (26 ftlb.) 
not shown  Check valve connection piece to turbocharger > Tightening torque 45 Nm (33 ftlb.) 
3  Holder
4  Seal
5  Oil extraction line
6  Screw, M6 x 12; turbocharger oil extraction line to oil guide housing > Tightening torque 10 Nm (7.5 ftlb.)  and turbocharger oil supply line holder > Tightening torque 10 Nm (7.5 ftlb.) 
7  Screw, M6 x 16 > Tightening torque 10 Nm (7.5 ftlb.) 
Fig 4: Oil Circuit For Turbocharger, Cylinders 5 To 8 Components Location With Torque Specification
G15197587Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Oil circuit for turbocharger, cylinders 5 to 8

1  Turbocharger oil feed line for cylinders 5 to 8; turbocharger oil feed line to connection piece > Tightening torque 40 Nm (30 ftlb.)  ; turbocharger oil feed line to cylinder head > Tightening torque 35 Nm (26 ftlb.) 
2  Turbocharger vent line for cylinders 5 to 8; vent line to turbocharger oil extraction line > Tightening torque 35 Nm (26 ftlb.) 
3  Screw, M6; turbocharger oil extraction line to oil guide housing > Tightening torque 10 Nm (7.5 ftlb.)  and retaining clip > Tightening torque 6.5 Nm (5 ftlb.) 
4  Retaining clip
5  Oil extraction line
6  Screw, M6 x 16 > Tightening torque 10 Nm (7.5 ftlb.) 
7  Seal
Fig 5: Turbocharger Exhaust Manifold, Cylinders 1 To 4 Components Location With Torque Specification
G15197588Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Turbocharger exhaust manifold, cylinders 1 to 4

1  Turbocharger exhaust manifold, cylinders 1 to 4
2  Seal; install so that marking on seal is legible
3  Lower tab washer
4  Upper tab washer
5  Nut M8; turbocharger exhaust manifold to cylinder head; replace > Tightening torque 27 Nm (20 ftlb.) 
Fig 6: Turbocharger Exhaust Manifold, Cylinders 5 To 8 Components Location With Torque Specification
G15197589Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Turbocharger exhaust manifold, cylinders 5 to 8

1  Turbocharger exhaust manifold, cylinders 5 to 8
2  Seal; install so that marking on seal is legible
3  Nut M8; turbocharger exhaust manifold to cylinder head; replace > Tightening torque 27 Nm (20 ftlb.) 
4  Upper tab washer
5  Lower tab washer
Fig 7: Turbocharger Exhaust Manifold Screws Tightening Sequence
G15197590Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Tightening sequence for turbocharger exhaust manifold

1 to 12  applies to both sides, always start at the timing-case cover
Fig 8: Boost Pressure And Wastegate 1 Components Location
G15197591Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Boost pressure and wastegate 1

1  Pressure line, boost pressure line
2  Hose clamp
3  Cycle valve
4  Support to timing-case cover
5  Combination holder
6  Wastegate control line for cylinders 5 to 8
7  Wastegate control line for cylinders 1 to 4
8  Hose holder
9  Screw to timing-case cover; see Timing-case cover
Fig 9: Boost Pressure And Wastegate 2 Components Location With Torque Specification
G15197592Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Boost pressure and wastegate 2

1  Pressure line
2  Vacuum line
3  Hose clamp
4  Screw, M6 x 12 > Tightening torque 10 Nm (7.5 ftlb.) 
5  Holder
6  Rubber element
7  Electric change-over valve
8  Control line
A  View A; connection of pressure line to intake-air distributor
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