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Home >> Subaru >> 2009 >> Outback Sport F4-2.5L SOHC >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Head Assembly >> System Specifications
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System Specifications

Cylinder head
Warping limit (Mating surface with cylinder block) mm (in) 0.035 (0.0014)
Grinding limit mm (in) 0.1 (0.004)
Standard height mm (in) 97.5 (3.84)

Cylinder head bolts
Tighten all bolts 29 Nm (3.0 kgf-m, 21.4 ft-lb)
Retighten all bolts 69 Nm (7.0 kgf-m, 50.9 ft-lb)
In the reverse order of installing
Loosen all bolts 180°
Loosen further 180°
Tighten all bolts 42 Nm (4.3 kgf-m, 31.0 ft-lb)
Tighten all bolts 80 to 90°
Tighten all bolts 40 to 45°
Further tighten the bolts (a) and (b) 40 - 45°





Cam bearing cap
Temporarily tighten the bolts (a) through (d)





Tighten (e) through (j) 18 Nm (1.8 kgf-m, 13.3 ft-lb)





Tighten (k) through (r) 9.75 Nm (1.0 kgf-m, 7.2 ft-lb)

sb09impre_me2-166e

Tighten the bolts (s) and (t) 9.75 Nm (1.0 kgf-m, 7.2 ft-lb)

Front exhaust pipe 30 Nm (3.1 kgf-m, 22.1 ft lb)