Cylinder Head Assembly
Cylinder HeadNotice: Ensure the cylinder head bolts that are being used are the proper pitch or engine damage will occur. The thread pitch on the M11 cylinder head bolts and the engine block cylinder head bolt holes have been revised. In order to prevent engine damage it is important to identify which thread pitch is being used. Cylinder head bolts with a pitch of 1.5 mm have a thread length of about 48 mm (1.890 inch) long. Cylinder head bolts with a pitch of 2.0 mm have a thread length of about 67 mm (2.638 inch) long.
Left 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 Total
Cylinder Head Bolt (M6) 12 Nm (106 inch lbs.)
Right 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 Total
Cylinder Head Bolt (M6) 12 Nm (106 inch lbs.)
Cylinder Head
^ Camshaft Bearing Bore Diameter 27.013 - 27.033 mm (1.0635 - 1.0642 inch)
^ Camshaft Bearing Bore Out-of-Round 0.010 mm (0.0004 inch)
^ Combustion Chamber Depth - at Measurement Point 10.470 - 10.710 mm (0.4122 - 0.4217 inch)
^ Cylinder Head Height - Deck to Camshaft Centerline Bore 136.00 mm (5.3543 inch)
^ Surface Flatness - Block Deck 0.050 mm (0.0020 inch)
^ Surface Flatness - Exhaust Manifold Deck 0.220 mm (0.0087 inch)
^ Surface Flatness - Intake Manifold Deck 0.220 mm (0.0087 inch)
^ Valve Guide Bore - Exhaust 5.969 - 5.989 mm (0.2350 - 0.2359 inch)
^ Valve Guide Bore - Intake 5.969 - 5.989 mm (0.2350 - 0.2359 inch)
^ Valve Guide Installed Height - Exhaust 14.300 mm (0.5630 inch)
^ Valve Guide Installed Height - Intake 14.720 mm (0.5795 inch)
^ Valve Lifter Bore Diameter 12.013 - 12.037 mm (0.4730 - 0.4739 inch)
Camshaft Installation - Left Exhaust:
Camshaft Installation - Left Exhaust
Install the right cylinder head intake camshaft bearing cap bolts.
^ First Pass 5 Nm (44 inch lbs.)
^ Final Pass +30 degrees
Camshaft Installation - Left Intake:
Camshaft Installation - Left Intake
Install the right cylinder head intake camshaft bearing cap bolts.
^ First Pass 5 Nm (44 inch lbs.)
^ Final Pass +30 degrees
Camshaft Installation - Right Exhaust:
Camshaft Installation - Right Exhaust
Install the right cylinder head intake camshaft bearing cap bolts.
^ First Pass 5 Nm (44 inch lbs.)
^ Final Pass +30 degrees
Camshaft Installation - Right Intake:
Camshaft Installation - Right Intake
Install the right cylinder head intake camshaft bearing cap bolts.
^ First Pass 5 Nm (44 inch lbs.)
^ Final Pass +30 degrees
Camshaft
^ Camshaft End Play 0.120 - 0.220 mm (0.0050 - 0.0087 inch)
^ Camshaft Journal Diameter 26.948 - 26.972 mm (1.0610 - 1.0619 inch)
^ Camshaft Journal Out-of-Round 0.006 mm (0.0002 inch)
Camshaft Journal to Bore Clearance
^ Production 0.051 - 0.076 mm (0.0020 - 0.0030 inch)
^ Service 0.040 - 0.090 mm (0.0016 - 0.0035 inch)
^ Camshaft Lobe Duration @ 0.150 mm (0.006 inch) Lift - Exhaust 246 degrees
^ Camshaft Lobe Duration @ 0.150 mm (0.006 inch) Lift - Intake 251 degrees
^ Camshaft Lobe Lift - Exhaust 5.94 mm (0.2339 inch)
^ Camshaft Lobe Lift - Intake 6.15 mm (0.2421 inch)
^ Camshaft Lobe Overlap @ 0.150 mm (0.006 inch) Lift 2.04 degrees
^ Camshaft Runout 0.050 mm (0.0020 inch)
Camshaft Thrust Surface
^ Runout 0.037 mm (0.0015 inch)
^ Width 22.990 - 23.090 mm (0.9051 - 0.9091 inch)
^ Camshaft Timing @ 0.150 mm (0.006 inch) Lift
^ Intake Opens 0.3 degrees ATDC
^ Intake Centerline 122.0 degrees ATDC
^ Intake Closes 246.0 degrees ATDC
^ Exhaust Opens 229.3 degrees BTDC
^ Exhaust Centerline 110.0 degrees BTDC
^ Exhaust Closes 11.2 degrees ATDC
Exhaust Manifold
^ Bolt 25 Nm (18 ft. lbs.)
^ Flange Bolt 25 Nm (18 ft. lbs.)
^ Nut 25 Nm (18 ft. lbs.)
Exhaust Manifold
Flywheel
^ Runout 0.300 mm (0.0118 inch)
Tighten the intake manifold bolts in sequence (1-10).
Intake Manifold Bolt 10 Nm (89 inch lbs.)
Intake Manifold
^ Surface Flatness 0.500 mm (0.0200 inch)