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eauto, The Car Guy
Category: Audi
Satisfied Customers: 16286
Experience:  ase mechanic
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2008 audi s5 4.2l v8 cuau. I need torque specs bolts (8)

Customer Question

2008 audi s5 4.2l v8 cuau.
I need torque specs for the bolts (8) that hold the upper intake manifold to the lower intake manifold. I removed them before realizing that both the upper and lower come out together.
I also need a suggestion for how to close the two open valves so I can finish cleaning carbon deposits. The car is parked facing up a slight incline, and is not lifted off the ground.
Submitted: 1 year ago.
Category: Audi
Customer: replied 1 year ago.
This is a manual transmission btw, if that helps with closing the valve.
Expert:  eauto replied 1 year ago.

Magnesium Intake Manifold

First pass 8 Nm

Second pass 9 Nm

Final passTighten 90°

Plastic Intake Manifold

Upper Manifold

First pass 8 Nm

Final pass 11 Nm

Lower Manifold 10 Nm diagonally and in steps