Cylinder Head Installation Note

WARNING: This page is about a different car, the 2003 Mazda Protege5 and 2003 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.

Measure the length of each bolt. Replace any that exceed the maximum length.
Standard length 104.2-104.8 mm {4.103-4.125 in}

Maximum length 105.5 mm {4.153 in}

Fig 1: Identifying Length Of Cylinder Head Bolts
Courtesy of MAZDA MOTORS CORP.
Tighten the cylinder head bolts a few turns in the order shown.
Tightening torque

17.5-22.5 N.m {1.79-2.29 kgf.m, 13.0-16.5 ft.lbf}

Fig 2: Tightening Sequence Of Cylinder Head Bolts
Courtesy of MAZDA MOTORS CORP.
Put a paint mark on each bolt head.
Using the marks as a reference, tighten the bolts by turning each 85°-95° in the sequence shown.
Further tighten each bolt by turning another 85°- 95° in the sequence shown.

Fig 3: Paint Mark On Bolt Head With Torque Specifications
Courtesy of MAZDA MOTORS CORP.