Cylinder Head Bolt Reusability

Cylinder Head Bolts Outer Diameter





^ Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between "d1" and "d2" exceeds the limit, replace them with new one.
Limit ("d1" - "d2") 0.11 mm (0.0043 inch)
^ If reduction of outer diameter appears in a position other than "d2", use it as "d2" point.