Cylinder Head Assembly: Specifications
CYLINDER HEADNote: The bolts must be examined BEFORE reuse. If the threads are necked down the bolts should be replaced.
Tighten the bolts in sequence using the following steps and torque values:
Step 1 Tighten bolts 1-8 27 Nm (20 ft. lbs.)
Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts. Tighten bolts 9 thru 12 to 14 Nm (10 ft. lbs.).
Step 3 Tighten bolts 1-8 90°
Step 4: Tighten bolts 1-8, 90°, again. Tighten bolts 9-12, 26 Nm (19 ft. lbs.)
Gasket Thickness (Compressed) 0.7 mm (0.0276 in.)
Valve Seat Angle 44.5° - 45.0°
Valve Seat Runout (MAX) 0.051 mm (0.002 in.)
Valve Seat Width
Intake 1.75 - 2.36 mm (0.0698 - 0.0928 in.)
Exhaust 1.71 - 2.32 mm (0.0673 - 0.0911 in.)
Guide Bore Diameter (Std.) 6.975 - 7.00 mm (0.2747 - 0.2756 in.)
Cylinder Head Warpage (Flatness) 0.0508 mm (0.002 in.)
Intake Manifold retaining bolts 12 Nm (105 in. lbs.)
Camshaft Bearing Cap Bolts 11 Nm (100 in. lbs.)
Exhaust Manifold Bolts Starting at the center arm and working outward; 25 Nm (18 ft. lbs.)