Cylinder Head Assembly: Specifications

CYLINDER HEAD BOLT TORQUE/SEQUENCE




Tighten bolts in sequence shown, using the following steps and torque values:
- Step 1: Bolts 1-8 to 48 Nm (35 ft. lbs.)
- Step 2: Bolts 1-8 to 75 Nm (55 ft. lbs.)
- Step 3: Bolts 1-8 to 75 Nm (55 ft. lbs.)
- Step 4: Bolts 1-8 an additional 1/4 turn. Do not use a torque wrench for this step.
- Step 5: Bolts 9-11 to 28 Nm (250 in. lbs.)

CYLINDER HEAD SURFACE VARIATION

Cylinder Head must be flat within:
Standard dimension = less than 0.05 mm (0.002 inch)
Service Limit = 0.2 mm (0.008 inch)
Grinding Limit = Maximum of 0.2 mm (0.008 inch) is permitted.

CAUTION: 0.20 mm (0.008 inch) MAX is a combined total dimension of the stock removal limit from cylinder head and block top surface (Deck) together

CYLINDER HEAD BOLT RE-USABILITY

The Cylinder head bolts should be examined BEFORE reuse. If the threads are necked down, the bolts should be replaced. Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale the bolt should be replaced.

CAMSHAFT BEARING CAP TORQUE/SEQUENCE





Tighten the camshaft bearing cap bolts using the sequence shown to 12 Nm (105 in. lbs.).

CAMSHAFT SPROCKET/GEAR SPECIFICATIONS

Sprocket Bolts 28 Nm (250 inch lbs.)

INTAKE MANIFOLD TORQUE/SEQUENCE





Lower Intake Manifold
Tighten manifold attaching bolts in sequence shown. Torque to 12 Nm (105 in. lbs.).





Upper Intake Manifold
Tighten manifold attaching bolts in sequence shown. Torque to 12 Nm (105 in. lbs.).

Throttle Body Bolts 11.9 Nm (105 in. lbs.)

EXHAUST MANIFOLD SPECIFICATIONS

Exhaust Manifold to Cylinder Head Bolts 23 Nm (200 inch lbs.)
Exhaust Manifold to Catalytic Converter Clamp 11 Nm (100 inch lbs.)