Cylinder Head Assembly: Specifications

Cylinder Head Height/Thickness - Measured from the Cylinder Head Deck to the Valve Rocker Arm Cover Seal Surface 120.2 mm (4.732 in)
Surface Flatness - Block Deck - Measured Within a 152.4 mm (6.0 in) Area 0.08 mm (0.003 in)
Surface Flatness - Block Deck - Measuring the Overall Length of the Cylinder Head 0.1 mm (0.004 in)

Cylinder Head Bolt
Note: The cylinder head bolts are of a torque-to-yield design and are NOT to be reused.









Cylinder Head M8 Bolts - in Sequence 30 Nm (22 lb ft)
Cylinder Head M11 Bolts - First Pass in Sequence 30 Nm (22 lb ft)
Cylinder Head M11 Bolts - Second Pass in Sequence 90 degrees
Cylinder Head M11 Bolts - Final Pass in Sequence 70 degrees

Exhaust Manifold Bolts - First Pass 15 Nm (11 lb ft)
Exhaust Manifold Bolts - Final Pass 20 Nm (15 lb ft)
Tighten the bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.





Intake Manifold Bolts - First Pass in Sequence 5 Nm (44 lb in)
Intake Manifold Bolts - Final Pass in Sequence 10 Nm (89 lb in)