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Home >> Mazda >> 2012 >> CX-7 FWD L4-2.5L >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Head Assembly
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Cylinder Head Assembly

Cylinder Head

Measure the length of each cylinder head bolt.






Replace any that exceeds maximum length.

Cylinder head bolt stem length
Standard 145.2-145.8 mm {5.717-5.740 in}
Maximum 146.5 mm {5.767 in}

Tighten the cylinder head bolts in the order shown in the following 5 steps using the SST (49 D032 316).






Tightening torque
Step 1 3.0-11 Nm {31-112 kgf-cm, 27-97 in-lbf}
Step 2 13-17 Nm {133-173 kgf-cm, 116-150 in-lbf}
Step 3 43-47 Nm {4.4-4.7 kgf-m, 32-34 ft-lbf}
Step 4 88-92°
Step 5 88-92°

Camshaft Bearing Cap

Temporarily tighten the camshaft cap bolts evenly in 2-3 steps.
Tighten the camshaft cap bolts in the order shown in the following two steps.






Tightening torque
Step 1 5.0-9.0 Nm {51-91 kgf-cm, 45-79 in-lbf}
Step 2 14-17 Nm {1.5-1.7 kgf-m, 11-12 ft-lbf}

Exhaust Manifold Specifications

Intake Manifold Specifications

Camshaft Gear/Sprocket Specifications