Tightening Torques & Sequence
Camshaft Bearing
4. Tighten camshaft bracket bolts in the following steps, in numerical order as shown in the figure.
a. Tighten No. 9 to 12 in numerical order as shown.
1.96 Nm (0.2 kgf-cm, 1 ft. lbs.)
b. Tighten No. 1 to 8 in numerical order as shown.
1.96 Nm (0~2 kgf-cm, 1 ft. lbs.)
c. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
1.96 Nm (0~2 kgf-cm, 1 ft. lbs.)
d. Tighten all bolts in numerical order as shown.
5.88 Nm (0.6 kgf-cm, 4 ft. lbs.)
e. Tighten No. 1 to 12 in numerical order as shown.
10.41 Nm (1.1 kgf-cm, 8 ft. lbs.)
f. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
31.35 Nm (3.2 kgf-cm, 23 ft. lbs.)
CAUTION: After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket from the parts listed below.
Intake Manifold (Lower)
Tighten in numerical order as shown in the figure.
^ There are two types of mounting bolts. Refer to the following for locating bolts.
M8 x 90 mm (3.54 inch): 7, 8
M8 x 35 mm (1.38 inch) Except the above
Intake Manifold (Upper)
Tighten in numerical order as shown in the figure.
^ There are two types of mounting bolts. Refer to the following for locating bolts
M8 x 80 mm (3.15 inch): 4, 5, 6, 7
M8 x 25 mm (0.98 inch): Except the above
^ Tighten camshaft bracket bolts in the following steps, in numerical order as shown in the figure.
a. Tighten No. 9 to 12 in numerical order as shown.
1.96 Nm (0.2 kgf-cm, 1 ft. lbs.)
b. Tighten No. 1 to 8 in numerical order as shown.
1.96 Nm (0~2 kgf-cm, 1 ft. lbs.)
c. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
1.96 Nm (0~2 kgf-cm, 1 ft. lbs.)
d. Tighten all bolts in numerical order as shown.
5.88 Nm (0.6 kgf-cm, 4 ft. lbs.)
e. Tighten No. 1 to 12 in numerical order as shown.
10.41 Nm (1.1 kgf-cm, 8 ft. lbs.)
f. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
31.35 Nm (3.2 kgf-cm, 23 ft. lbs.)
CAUTION: After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket from the parts listed below.
^ Mating surface of rocker cover
^ Mating surface of front cover
Exhaust Manifold
^ Install exhaust manifold and tighten mounting nuts in numerical order as shown in the figure.
28 N-m (2.9 kg-m, 21 ft-lb)
NOTE: Tighten mounting nuts No. 1 to 4 in two steps. The numerical order No. 9 to 12 shown second steps.
Camshaft Sprocket bolt 152 N-m (16 kg-m, 112 ft-lb)
Cylinder Head Bolts
^ Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between "d1" and "d2" exceeds the limit, replace them with new one.
Limit ("d1" - "d2") : 0.18 mm (0.0071 inch)
^ If reduction of outer diameter appears in a position other than "d2", use it as "d2" point.
^ Install cylinder head follow the steps below to tighten cylinder head bolts in numerical order as shown in the figure with cylinder head bolt wrench (commercial service tool).
CAUTION: If cylinder head bolts are re-used, check their outer diameters before installation.
a. Apply new engine oil to threads and seating surface of cylinder head bolts.
b. Tighten all cylinder head bolts.
98.1 Nm (10 kgf-cm, 72 ft. lbs.).
98.1 Nm (10 kgf-cm, 72 ft. lbs.)
c. Completely loosen all cylinder head bolts.
0 Nm (0 kgf-cm, 0 ft. lbs.)
CAUTION: In step "c", loosen cylinder head bolts in reverse order of that indicated in the figure.
d. Tighten all cylinder head bolts to 44.1 Nm (4.5 kgf-cm, 33 ft. lbs.).
44 Nm (4.5 kgf-cm, 33 ft. lbs.)
e. Turn all cylinder head bolts 60 degrees clockwise. (Angle tightening)
CAUTION: Check the tightening angle by using angle wrench (SST). Avoid judgment by visual inspection without SST.
^ Check tightening angle indicated on angle wrench indicator plate.
f. Turn all cylinder head bolts 60 degrees clockwise again. (Angle tightening)
^ Install in the reverse order of removal.