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Home >> Mazda >> 2007 >> Mazdaspeed6 L4-2.3L Turbo >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Head Assembly >> System Specifications

System Specifications

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Cylinder Head
Measure the length of each cylinder head bolt.
- Replace any cylinder head bolts that exceed the maximum length.





Cylinder head bolt length
Standard 144.7 - 145.3 mm (5.700 - 5.720 in)
Maximum 146 mm (5.748 in)





Tightening procedure
(1) 3 - 11 Nm (30.6 - 112 kgf.cm, 26.6 - 97.3 in.lbf)
(2) 13 - 17 Nm (1.4 - 1.7 kgf.m, 9.6 - 12.5 ft.lbf)
(3) 43 - 47 Nm (4.4 - 4.7 kgf.m, 31.8 - 34.6 ft.lbf)
(4) 88° - 92°
(5) 88° - 92°


Camshaft Bearing





Install the camshaft caps and temporarily tighten the camshaft cap bolts evenly in two or three passes, and then tighten the camshaft cap bolts using the following two steps, in the order shown in the figure.

Tightening procedure
(1) 5.0 - 9.0 Nm (51.0 - 91.7 kgf.cm, 44.3 - 79.6 in. lbf)
(2) 14.0 - 17.0 Nm (1.5 - 1.7 kgf.m, 10.4 - 12.5 ft. lbf)

Intake Manifold Specifications

Camshaft Gear/Sprocket Specifications