Cylinder Head Assembly: Specifications
Cylinder HeadHINT: The cylinder head bolts are tightened in 3 successive steps.
Apply a light coat of engine oil to the threads and under the heads of the cylinder head bolts.
Using several steps, uniformly install and tighten the 10 cylinder head bolts with plate washers with a 10 mm bi-hexagon wrench in the sequence shown in the illustration.
Torque 39 Nm (398 kgf-cm, 29 ft. lbs.)
Mark the front of the cylinder head bolt head with paint.
Retighten the cylinder head bolts by 90° in the same order as in step (c).
Retighten the cylinder head bolts by an additional 90°.
Check that the painted mark is at a 180° from the original position.
CYLINDER HEAD SET BOLT
Using vernier calipers, measure the minimum diameter of the elongated thread at the measuring point.
Standard outside diameter 10.76 to 10.97 mm (0.4236 to 0.4319 inch)
Minimum outside diameter 10.40 mm (0.4094 inch)
HINT: If a visual check reveals no excessively thin areas, check the center of the bolt (see illustration) and find the area that has the smallest diameter.
Cylinder block surface warpage
Maximum 0.05 mm (0.0020 inch)
Intake manifold surface warpage
Maximum 0.05 mm (0.0020 inch)
Exhaust manifold surface warpage
Maximum 0.05 mm (0.0020 inch)
Valve seat
Refacing angle 30°, 45°, 60°
Contacting angle 45°
Contacting width 1.0 to 1.4 mm (0.039 to 0.055 inch)
Valve guide bush bore diameter
STD 10.285 to 10.306 mm (0.4049 to 0.4057 inch)
O/S 0.05 10.335 to 10.356 mm (0.4069 to 0.4077 inch)
Cylinder head set bolt outside diameter
STD 10.76 to 10.97 mm (0.4236 to 0.4319 inch)
Minimum 10.40 mm (0.4094 inch)
Cylinder head surface warpage
Maximum 0.05 mm (0.0020 inch)
Spark plug x Cylinder head cover sub-assembly 18 Nm (184 kgf-cm, 13 ft. lbs.)
Ventilation pipe x Cylinder head cover sub-assembly 18 Nm (184 kgf-cm, 13 ft. lbs.)
Camshaft oil delivery pipe x Cylinder head sub-assembly
Bolt A 12 Nm (122 kgf-cm, 9 ft. lbs.)
Except Bolt A 16 Nm (158 kgf-cm, 11 ft. lbs.)
Timing chain guide x Cylinder head sub-assembly 10 Nm (102 kgf-cm, 7 ft. lbs.)
Cylinder head cover sub-assembly x Cylinder head sub-assembly 9 Nm (92 kgf-cm, 80 inch lbs.)
Ignition coil x Cylinder head cover sub-assembly 9 Nm (92 kgf-cm, 80 inch lbs.)
Exhaust manifold x Cylinder head sub-assembly 36 Nm (367 kgf-cm, 27 ft. lbs.)
Cylinder head x Cylinder block
1st 39 Nm (398 kgf-cm, 29 ft. lbs.)
2nd Turn 90°
3rd Turn 90°
Camshaft bearing cap x Cylinder head
Bolt A 12 Nm (122 kgf-cm, 9 ft. lbs.)
Others 16 Nm (160 kgf-cm, 11 ft. lbs.)
Cylinder head cover x Cylinder head 9.0 Nm (92 kgf-cm, 80 inch lbs.)
Straight screw plug No. 1 x Cylinder head 44 Nm (449 kgf-cm, 32 ft. lbs.)
Straight screw plug No. 2 x Cylinder head 90 Nm (918 kgf-cm, 66 ft. lbs.)
Stud bolt x Cylinder head
Bolt A 3.0 Nm (31 kgf-cm, 27 inch lbs.)
Bolt B 7.5 Nm (76 kgf-cm, 66 inch lbs.)
Bolt C 9.5 Nm (97 kgf-cm, 84 inch lbs.)
Screw plug x Cylinder head 30 Nm (306 kgf-cm, 22 ft. lbs.)
Intake Manifold
Torque 25 Nm (255 kgf-cm, 18 ft. lbs.)
Camshaft Bearing Cap
Provisionally install the No. 1 camshaft bearing cap.
Check the proper location of each No. 2 camshaft bearing cap and install each one.
Tighten the bolts in the order shown in the illustration.
Torque:
12 Nm (122 kgf-cm, 9 ft. lbs.) for bolt A
16 Nm (158 kgf-cm, 11 ft. lbs.) for bolts except bolt A
Check that each timing mark is set in the position shown in the illustration.
Camshaft Gear/Sprocket
Camshaft timing gear assembly x Camshaft 78 Nm (795 kgf-cm, 58 ft. lbs.)
Camshaft timing gear x No. 2 camshaft 78 Nm (795 kgf-cm, 58 ft. lbs.)
Exhaust Manifold
Install a new gasket and the exhaust manifold with 8 new nuts.
Torque 36 Nm (367 kgf-cm, 27 ft. lbs.)