Exhaust manifold installation (RZ4E-TC)

1. Component views

Exhaust manifold

Part name

  1. Gasket
  2. Bolt
  3. Heat protector
  4. Exhaust manifold
  5. Nut
  6. Bolt
  7. Heat protector
  8. Bolt

Tightening torque

2: 25 N・m { 2.5 kgf・m / 18 lb・ft }

5-1: 30 N・m { 3.1 kgf・m / 22 lb・ft }

5-2: 52 N・m { 5.3 kgf・m / 38 lb・ft }

5-3: 52 N・m { 5.3 kgf・m / 38 lb・ft }

6: 25 N・m { 2.5 kgf・m / 18 lb・ft }

8-1: 30 N・m { 3.1 kgf・m / 22 lb・ft }

8-2: 52 N・m { 5.3 kgf・m / 38 lb・ft }

8-3: 52 N・m { 5.3 kgf・m / 38 lb・ft }

2. Exhaust manifold installation

1) Install the gasket to the cylinder head.

Note

  • Face the protruding section of the gasket toward the engine front side.

Legend

  1. Protrusion

Caution

  • Do not reuse the gasket.

2) Referring to the diagram, temporarily tighten the exhaust manifold to the cylinder head.

Tightening torque: 30 N・m { 3.1 kgf・m / 22 lb・ft }

Washer installation direction

Legend

  1. Stud bolt
  2. Washer
  3. Nut

Spacer and washer installation direction

Legend

  1. Stud bolt
  2. Spacer
  3. Washer
  4. Nut

3) Securely tighten the exhaust manifold to the cylinder head.

Tightening torque: 52 N・m { 5.3 kgf・m / 38 lb・ft } 1st time

Tightening torque: 52 N・m { 5.3 kgf・m / 38 lb・ft } 2nd time

Note

  • Retighten to the same torque to prevent variations in the tightening torque.

Caution

  • Do not over-tighten since it will expand or contract due to the heat of the manifold.

4) Install the heat protector to the exhaust manifold.

Tightening torque: 25 N・m { 2.5 kgf・m / 18 lb・ft }

3. Turbocharger installation