Cylinder Head Installation Note

Cylinder head bolt length L 

145.2-145.8 mm {5.717-5.740 in}

Cylinder head bolt length L maximum 

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
     CAUTION:

     • Completely remove oil, dirt, and sealant adhering to the cylinder head gasket contacting surfaces.

       Otherwise, a sealing malfunction may occur.

2. Completely remove any oil, dirt, and sealant adhering to the cylinder block.
   CAUTION:

   • Be aware of the following points, otherwise a sealing malfunction may occur due to hardening of the sealant.
     • Set cylinder head on cylinder block within 10 min after silicone sealant is applied
     • After setting cylinder head, tighten cylinder head bolts immediately
3. Apply silicone sealant (TB1217D or equivalent) to the areas shown in the figure.

   Courtesy of MAZDA MOTORS CORP.

   Silicone sealant application diameter 

   5-10 mm {0.2-0.3 in}

4. Install a new cylinder head gasket to the cylinder block.
5. Apply silicone sealant (TB1217D or equivalent) to the areas shown in the figure.

   Courtesy of MAZDA MOTORS CORP.

   Silicone sealant application diameter 

   5-10 mm {0.2-0.3 in}

6. Set the cylinder head on the cylinder block.
7. Tighten the cylinder head bolts in the order shown in the following 4 steps.
   Fig 1: Cylinder Head Bolts Tightening Sequence

   Courtesy of MAZDA MOTORS CORP.

   Tightening torque

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

   Step 2: 32-36 N.m {3.3-3.6 kgf.m, 24-26 ft.lbf} 

   Step 3: 85-95° 

   Step 4: 85-95° 

8. Install the chain for the SST which was set aside and secure the engine.
9. Remove the engine lifter or garage jack.
10. Remove the temporarily assembled oil pan.