Cylinder Head Assembly: Specifications

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
Cylinder Head M8 Bolts in Sequence 30 Nm (22 lb ft)

Bolt Tightening Sequence: Begin with the center bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

Bolt Re-usability: The cylinder head bolts are torque to yield bolts and are single use only fasteners.

Cylinder Head Surface Variation - Head to Block - Head to Manifolds - Warpage:
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
Surface Flatness - Exhaust Manifold Deck 0.13 mm 0.005 in
Surface Flatness - Intake Manifold Deck 0.08 mm 0.0031 in





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

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


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