Cylinder Head Assembly: Specifications

Cylinder Head Bolts





Check that the nominal length of each cylinder head bolt meets the limit. If it exceeds the limit, replace the bolt with a new one.

Limit (A) 99.4 mm (3.91 inches)

Apply a small amount of engine oil to the thread of the bolts and to the washers.









(1) Tighten the bolts 78 ± 2 Nm (58 ± 1 ft-lb) in the order shown.
(2) Loosen the bolts fully in the reverse sequence of that shown.
(3) Tighten the bolts 20 ± 2 Nm (15 ± 1 ft-lb) in the order shown.
(4) Reconfirm all bolts tightened firmly.
(5) Apply a paint mark to the heads of the cylinder head bolts and cylinder head, then tighten 90 degrees as shown.

CAUTION:
When the tightening angle is smaller than the specified tightening angle, the appropriate tightening capacity cannot be secured.
When the tightening angle is larger than the specified tightening angle, remove the bolt to start from the beginning again according to the procedure.

(6) Tighten 90 degrees as shown, then check to see that the paint mark on the head of the cylinder head bolt and the paint mark on the cylinder head are aligned.

Cylinder Head Flatness of Gasket Surface
Standard Value less than 0.03 mm (0.001 in)
Limit 0.2 mm (0.007 in)

Cylinder Head Grinding Limit of Gasket Surface (Total resurface depth of Cylinder head and cylinder block)
Limit 0.2 mm (0.007 in)

Cylinder Head Overall Height
Standard Value 120 mm (4.7 in)

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