Cylinder Head Assembly Note

Standard cylinder head bolt length L 

145.2-145.8 mm {5.717-5.740 in} 

Maximum cylinder head bolt length L 

146.5 mm {5.767 in} 

1. When a cylinder head bolt is reused, apply engine oil to any part of the following:
   • Bolt seating surface
   • Cylinder head seating surface
2. Tighten the cylinder head bolts in the order shown in the following four steps.
   Fig 1: Identifying Cylinder Head Bolt Length

   Courtesy of MAZDA MOTORS CORP.

   Tightening procedure 

   Step 1:13-17 N.m {133-173 kgf.cm, 116-150 in.lbf} 

   Step 2: 43-47 N.m {4.4-4.7 kgf.m, 32-34 ft.lbf} 

   Step 3: 85-95° 

   Step 4: 85-95° 

   Fig 2: Cylinder Head Bolt Tightening Sequence

   Courtesy of MAZDA MOTORS CORP.