Cylinder Head Assembly

SERVICE DATA AND SPECIFICATIONS (SDS)

Cylinder Head


CYLINDER HEAD

Unit: mm (in)











VALVE DIMENSIONS

Revision: March 20122013 Infiniti JX
Unit: mm (in)












VALVE OIL SEAL

Unit: mm (in)






VALVE GUIDE

Unit: mm (in)










Revision: March 20122013 Infiniti JX


VALVE SEAT

Unit: mm (in)
















Revision: March 20122013 Infiniti JX

VALVE SPRING






Unit: mm (in)





Cylinder Head Bolt:





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.

Limit (d1 - d2) 0.11 mm (0.0043 in)

Lubricate threads and seat surfaces of the bolts with new engine oil.





Install the cylinder heads on the cylinder block. Tighten the cylinder head bolts in the five steps in the numerical order as shown using Tool.

Tool Number : KV10112100 (BT-8653-A)

Tightening procedure:

Cylinder head bolts
Step a 98.1 Nm (10 kg-m, 72 ft-lb) in order
Step b Loosen in the reverse order of tightening
Step c 39.2 Nm (4.0 kg-m, 29 ft-lb) in order
Step d 103° degrees rotation clockwise in order
Step e 103° degrees rotation clockwise in order










Camshaft Bracket:










Intake Manifold [1][2]Intake Manifold

Exhaust Manifold [1][2]Exhaust Manifold

Camshaft Gear/Sprocket Specifications