System Specifications

CYLINDER HEAD





Valve Dimensions





Valve Guide





Valve Seat





Valve Spring

Cylinder head bolts torque and sequence





Follow the steps to tighten the bolts in the numerical order shown in the figure to install cylinder head
Step a : 98.1 Nm (10 kg-m, 72 ft. lbs.)
Step b : 0 Nm Loosen in the reverse order of tightening.
Step c : 44.1 Nm (4.5 kg-m, 33 ft. lbs.)
Step d : 60° degrees clockwise
Step e : 60° degrees clockwise

Head Bolt reuse/replace
Cylinder Head Bolts Diameter





^ Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace the bolts with new one.
Limit (d1 - d2): 0.18 mm (0.0071 inch)
^ If reduction of diameter appears in a position other than d2, use it as d2 point

Surface distortion
Exhaust manifold 0.3 mm (0.012 inch)





Exhaust Manifold and Three Way Catalyst





Exhaust Manifold nut sequence

Crankshaft pulley bolt torque
Step 1 93.1 Nm (9.5 kg-m, 69 ft. lbs.)
Step 2 additional 90° (angle tightening)