System Specifications

CYLINDER HEAD

VALVE





Valve Dimensions





Valve Clearance
Intake
Cold 0.26 - 0.24 mm (0.010 - 0.013 in.)
Hot* (reference data) 0.304 - 0.416 mm (0.012 - 0.016 in.)
Exhaust
Cold 0.29 - 0.37 mm (0.011 - 0.015 in.)
Hot* (reference data) 0.308 - 0.432 mm (0.012 - 0.017 in.)
*: Approximately 80°C (176°F)

Valve Spring
Free height mm (in) 46.90(1.8465)
Pressure N (kg, lb) at height mm (inch)
Standard 166-188 (16.9-19.2,37.3-42.3) at 37.0 (1.457)
Limit 378-426 (38.6-43.5,85.0-95.8) at 27.8 (1.094)
Out-of-square mm (in) Less than 2.0 (0.079)

Valve Lifter
Valve lifter outer diameter 33.977 - 33.987 mm (1.3377 - 1.3381 in.)
Lifter lifter bore diameter 34.000 - 34.016 mm (1.3386 - 1.3392 in.)
Clearance between lifter and lifter guide; 0.013 - 0.039 mm (0.0005 - 0.0015 in.)








Available Valve Lifter





Valve Guide





Valve Seat





CAMSHAFT AND CAMSHAFT BEARING

CYLINDER HEAD TORQUE AND SEQUENCE














Install the cylinder heads on the cylinder block. Tighten the cylinder head bolts in five steps in the order shown.
Step a : 98 Nm (10 kgf-cm, 72 ft. lbs.)
Step b : 0 Nm Loosen in the reverse order of tightening.
Step c : 32.9 Nm (4.0 kgf-cm, 29 ft. lbs.)
Step d : 90° degrees clockwise
Step e : 90° degrees clockwise

HEAD BOLT REUSE/REPLACE

Outer Diameter of Cylinder Head Bolts






^ Inspect the cylinder head bolts before installing the cylinder heads.

CAUTION: Cylinder head bolts are tightened by degree rotation tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace the bolts with new ones.

- Subtract the head bolt diameter measurement taken at d2 from the head bolt diameter measurement taken at d1. If the difference between d1 and d2 exceeds the limit, replace the bolts with new ones.

Limit (d1 - d2) : 0.11 mm (0.0043 inch)

^ If a reduction in outer diameter appears in a position other than d2, use it as the d2 measuring point.
^ Lubricate threads and seat surfaces of the bolts with new engine oil for installation.

INTAKE MANIFOLD TORQUE AND SEQUENCE






Intake manifold bolts
Step 1 : 4.9 - 9.8 Nm (0.5 - 0.99 kgf-cm, 44- 86 inch lbs.)
Step 2 : 26.5 - 31.4 Nm (2.7 - 3.2 kgf-cm, 20 - 23 ft. lbs.)
Step 3 : 26.5 - 31.4 Nm (2.7 - 3.2 kgf-cm, 20 - 23 ft. lbs.)






Intake manifold collector bolts 17.6 - 21.6 Nm (1.8 - 2.2 kgf-cm, 13 -15 ft. lbs.)

CAMSHAFT BEARING CAP TORQUE AND SEQUENCE










Tighten the camshaft bracket bolts in the steps in the order shown.

NOTE: Lubricate the threads and seat surfaces of the camshaft bracket bolts with new engine oil before installation.

Camshaft bracket bolts
Step 1 (bolts 7 -10) : 1.96 Nm (0.2 kgf-cm, 17 inch lbs.)
Step 2 (bolts 1 - 6) : 1.96 Nm (0.2 kgf-cm, 17 inch lbs.)
Step 3 : 5.88 Nm (0.6 kgf-cm, 52 inch lbs.)
Step 4 (bolts 1 - 6) : 10.4 Nm (1.1 kgf-cm, 92 inch lbs.)

CAMSHAFT PULLEY/GEAR TORQUE










EXHAUST MANIFOLD TORQUE AND SEQUENCE

Right Bank Exhaust Manifold Nuts:

Left Bank Exhaust Manifold Nuts:

Exhaust manifold nuts 28.4 - 33.3 Nm (2.9 - 3.3 kgf-cm, 21 - 24 ft. lbs.)