Cylinder Head Assembly

Camshaft Bearing Bore Diameter 27.013-27.033 mm (1.0635-1.0642 in.)
Camshaft Bearing Bore Out-of-Round 0.010 mm (0.0004 in.)
Combustion Chamber Depth - at Measurement Point 10.470-10.710 mm (0.4122-0.4217 in.)
Cylinder Head Height-Deck to Camshaft Centerline Bore 136.00 mm (5.3543 in.)
Surface Flatness - Block Deck 0.050 mm (0.0020 in.)
Surface Flatness - Exhaust Manifold Deck 0.220 mm (0.0087 in.)
Surface Flatness - Intake Manifold Deck 0.220 mm (0.0087 in.)
Valve Guide Bore - Exhaust 5.969-5.989 mm (0.2350-0.2359 in.)
Valve Guide Bore - Intake 5.969-5.989 mm (0.2350-0.2359 in.)
Valve Guide Installed Height - Exhaust 14.300 mm (0.5630 in.)
Valve Guide Installed Height - Intake 14.720 mm (0.5795 in.)
Valve Lifter Bore Diameter 12.013-12.037 mm (0.4730-0.4739 in.)

Left Cylinder Head Torque Sequence:

Right Cylinder Head Torque Sequence:

Important: DO NOT reuse the old M11 cylinder head bolts.

Cylinder Head Bolt (M11)
First Pass 30 Nm (22 ft. lbs.)
Second Pass +60 degrees
Third Pass +60 degrees
Final Pass +60 degrees/180 degrees
Cylinder Head Bolt (M6) 12 Nm (106 in. lbs.)
Cylinder Head Coolant Plug 80 Nm (59 ft. lbs.)

Intake Manifold Torque Sequence:

Intake Manifold Bolt 10 Nm (89 in. lbs.)

Camshaft Right Torque Sequence:

Camshaft Left Torque Sequence:

Camshaft Bearing Cap Bolt
First Pass 5 Nm (44 in. lbs.)
Final Pass +30 degrees
Exhaust Manifold
Bolt 25 Nm (18 ft. lbs.)
Flange Bolt 25 Nm (18 ft. lbs.)
Nut 25 Nm (18 ft. lbs.)