System Specifications
CYLINDER HEADNOTE: Cylinder head bolts and washers must not be reused.
Tighten cylinder head bolts in several steps to the specified torque according to the assembly order shown.
Specified torque 35 ± 2 Nm (26 ± 1 ft-lb)
Put a paint mark on all of cylinder head bolt heads and cylinder head.
CAUTION:
^ If the tightening angle is 180° or less, tightening performance may not be secured. Use caution to the tightening angle during tightening.
^ If the tightening angle becomes more than 180°, completely loosen bolts and start tightening over again according to the procedure.
Tighten the cylinder head 90° according to the tightening order. Tighten it further 90° and make sure that the paint mark on the cylinder head bolt is in a straight line with that on the cylinder head.
Distortion of cylinder head bottom
Standard Value Within 0.05 mm (0.002 in)
Limit 0.02 mm (0.0008 in)
Grinding limit of cylinder head bottom
Limit 0.2 mm (0.008 in)
Overall height of cylinder head
Standard Value 128.5 mm (5.06 in)
FRONT CAMSHAFT BEARING CAP
Install the front camshaft bearing cap to the cylinder head, and temporarily tighten the camshaft bearing front cap to the specified torque in the order of the figure (1).
Tightening torque 17 ± 3 Nm (13 ± 2 ft-lb)
Tighten the front camshaft bearing cap again to the specified torque in the order of the figure (2).
Tightening torque 30 ± 2 Nm (22 ± 1 ft-lb)
Intake manifold nut 20 ± 2 Nm (15 ± 1 ft-lb)
Intake manifold assembly bolt washer 20 ± 2 Nm (15 ± 1 ft-lb)
Intake manifold stay bolt 20 ± 2 Nm (15 ± 1 ft-lb)
Exhaust manifold upper cover bolt 14 ± 1 Nm (124 ± 8 in-lb)
Exhaust manifold lower cover bolt 14 ± 1 Nm (124 ± 8 in-lb)
Exhaust manifold nut 49 ± 5 Nm (36 ± 3 ft-lb)