General Specifications
SERVICE SPECIFICATIONS
Gasket Surface Flatness
Standard Maximum: 0.05 mm (0.0020 inch)
Limit: 0.1 mm (0.0039 inch)
Manifold Mounting Surface Flatness
Standard Maximum: 0.15 mm (0.0059 inch)
Limit: 0.3 mm (0.0118 inch)
Valve Seat Oversize Dimensions
Intake:
Standard: 0.03 mm (0.012 inch) O.S.
Limit: 28.8 - 28.825 mm (1.134 - 1.135 inch)
Standard: 0.06 mm (0.024 inch) O.S.
Limit: 29.1 - 29.125 mm (1.146 - 1.1467 inch)
Exhaust:
Standard: 0.03 mm (0.012 inch) O.S.
Limit: 34.3 - 34.325 mm (1.350 - 1.351 inch)
Standard: 0.06 mm (0.024 inch) O.S.
Limit: 34.6 - 34.625 mm (1.362 - 1.363 inch)
Valve Guide Oversize Dimensions:
Intake:
0.05 mm (0.002 inch) O.S.: 11.05 - 11.068 mm (0.435 - 0.4357 inch)
0.25 mm (0.010 inch) O.S.: 11.25 - 11.268 mm (0.443 - 0.4436 inch)
0.50 mm (0.020 inch) O.S.: 11.50 - 11.518 mm (0.453 - 0.4535 inch)
Exhaust:
0.05 mm (0.002 inch) O.S.: 11.05 - 11.068 mm (0.435 - 0.4357 inch)
0.25 mm (0.010 inch) O.S.: 11.25 - 11.268 mm (0.443 - 0.4436 inch)
0.50 mm (0.020 inch) O.S.: 11.50 - 11.518 mm (0.453 - 0.4535 inch)
Tightening Specifications
Nuts And Bolts 15 - 20 Nm (11 - 14 ft. lbs.)
Manifold Stay To Cylinder Block 23 - 30 Nm (17 - 22 ft. lbs.)
Intake Manifold Nuts 18 - 25 Nm (13 - 18 ft. lbs.)
Throttle Body to Surge Tank 15 - 20 Nm (11 - 14 ft. lbs.)
Camshaft sprocket bolt: 100-120 Nm (1000-1200 kg.cm, 74-89 ft. lbs.)
Tightening Sequence:
See TSB 98-20-004 July 1998
Install the cylinder head bolts. Starting at top center, tighten all cylinder head bolts in sequence as shown in illustration, using the Cylinder Head Bolt Wrench (09221 -11001) or equivalent. Repeat the procedure, re-tightening all cylinder head bolt to the specified torque.
Cylinder head bolt
M10: 30 Nm (300 kg.cm, 22 ft. lbs.) + (60°-65°) + (60°-65°)
M12: 35 Nm (350 kg.cm, 26 ft. lbs.) + (60°-65°) + (60°-65°)
Camshaft Bearing Caps
Tightening Sequence
Tighten the bearing caps to the specified torque in two or three steps as shown.
Tightening torque:
Bearing cap bolt: 12-14 Nm (120-140 kg.cm, 9-10 ft. lbs.)