Cylinder Head

Cylinder Head Bolts Outer Diameter





^ 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) 0.11 mm (0.0043 inch)
^ If reduction of outer diameter appears in a position other than d2, use it as d2 point.

Cylinder Head Torque and Sequence








Install cylinder head follow the steps below to tighten cylinder head bolts in numerical order as shown.

CAUTION: If cylinder head bolts re-used, check their outer diameters before installation. Refer to Cylinder Head Bolts Outer Diameter.

Step a 98 Nm (10 kg-m, 72 ft. lbs.)
Step b Loosen to 0 Nm in the reverse order of tightening.
Step c 39.2 Nm (4.0 kg-m, 29 ft. lbs.)
Step d 90° clockwise
Step e 90° clockwise