Exhaust Manifold Installation - Right Side CSV HSV VXR8

1. Install a NEW exhaust manifold gasket (1) and a NEW sealing ring (3) onto the exhaust manifold (2).

Notice: Refer to Exhaust System Inspection Notice in the Preface section.

2. Install the exhaust manifold assembly to engine.




Important: Do not fully tighten the exhaust manifold to cylinder head retaining bolts (1) at this stage.

3. Install the NEW exhaust manifold to cylinder head retaining bolts (1).

Do not fully tighten at this stage.

4. Clean the threads of the exhaust manifold to catalytic converter retaining studs with a suitable cleaning solvent.
5. Tighten the exhaust manifold to cylinder head retaining bolts (1) working from the centre to the outside.

Tighten
Tighten the bolts to 20 Nm (15 lb ft).

Exhaust Manifold Installation - Right Side LWB SWB

Notice: Refer to Hot Exhaust System Caution in the Preface section.




1. Install NEW exhaust manifold gasket (1) and NEW sealing ring (3) to the exhaust manifold (2).
2. Install the exhaust manifold assembly to engine.




Important: Do not fully tighten the exhaust manifold to cylinder head retaining bolts (1) at this stage.

3. Install the NEW exhaust manifold to cylinder head retaining bolts (1).
4. Tighten the exhaust manifold to cylinder head retaining bolts (1) working from the centre to the outside.

Tighten

•	First Pass: Tighten the bolts to 15 N·m (11 lb ft). Tighten the exhaust manifold bolts beginning with the centre 2 bolts. Alternate from side-to-side, and work toward the outside bolts.

•	Final Pass: Tighten the bolts to 20 N·m (15 lb ft). Tighten the exhaust manifold bolts beginning with the centre 2 bolts. Alternate from side-to-side, and work toward the outside bolts.




5. Install the exhaust manifold heat shield (1).
6. Install the exhaust manifold heat shield to exhaust manifold retaining bolts (2).

Tighten
Tighten the bolts to 10 N·m (89 lb in).