Cylinder Head Assembly: Specifications

Cylinder Head

Position the new gaskets and the LH and RH cylinder heads. Install new bolts and tighten in the sequence shown in 6 stages:
Stage 1: Tighten to 40 Nm (30 lb-ft).
Stage 2: Tighten to 90 Nm (66 lb-ft).
Stage 3: Loosen one full turn.
Stage 4: Tighten to 40 Nm (30 lb-ft).
Stage 5: Tighten 90 degrees.
Stage 6: Tighten 90 degrees.





Bolt Re-usability

NOTE: New cylinder head bolts must be installed. They are a torque-to-yield design and cannot be reused.

Surface Variation - Head-to-block, Head-to-manifolds And Surface Variation - Warpage


















a Specification 82.4 mm (3.2441 in) diameter gauge

Intake Manifold

Position the lower intake manifold and install the 8 bolts.
Tighten in the sequence shown to 10 Nm (89 lb-in).





Position the upper intake manifold and install the 8 bolts.
Tighten in the sequence shown to 10 Nm (89 lb-in).





Camshaft Bearing Cap

Tighten the RH camshaft bearing cap bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 10 Nm (89 lb-in).
Stage 2: Individually loosen and then tighten each camshaft bearing cap to 10 Nm (89 lb-in).





Tighten the LH camshaft bearing cap bolts in the sequence shown in 2 stages.
Stage 1: Tighten to 10 Nm (89 lb-in).
Stage 2: Individually loosen and then tighten each camshaft bearing cap to 10 Nm (89 lb-in).





Exhaust Manifold

Install a new gasket, the RH exhaust manifold and 6 new nuts.
Tighten to 20 Nm (177 lb-in) in the sequence shown.