Exhaust Manifold Installation - Left Side CSV HSV VXR8

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

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

2. Install the exhaust manifold assembly (2) to the 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.

Important: Make sure the sealing ring is seated correctly.

5. Install the left side catalytic converter. Refer to Catalytic Converter Replacement - Left Side.
6. 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 - Left Side LWB SWB

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




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



2. Apply a 5 mm (0.2 in) wide band of threadlock, or equivalent, to the threads of the exhaust manifold to cylinder head retaining bolts (1). Refer to Adhesives, Fluids, Lubricants, and Sealers.

Notice: Refer to Fastener Notice in the Preface section.

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

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.

4. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.



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).