Cylinder Head Bolt Torque

CYLINDER HEAD BOLT TORQUE/SEQUENCE





Tighten the cylinder head bolts in the sequence shown in image. Using the 4 step torque method, tighten according to the following values:
- First All to 34 Nm (25 ft. lbs.)
- Second All to 68 Nm (50 ft. lbs.)
- Third All to 68 Nm (50 ft. lbs.)
- Fourth Turn an additional 1/4 Turn. Do not use a torque wrench for this step.

CYLINDER HEAD SURFACE VARIATION





Cylinder head must be flat within 0.1 mm (0.004 inch)

CYLINDER HEAD BOLT RE-USABILITY





The cylinder head bolts should be examined BEFORE reuse. If the threads are necked down, the bolt(s) should be replaced. Necking can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale, the bolt(s) should be replaced.