Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Cylinder Head Bolt Reusability

CYLINDER HEAD BOLT REUSABILITY





NOTE: The Cylinder head bolts should be examined BEFORE reuse. If the threads are necked down, the bolts should be replaced.

Necking (1) can be checked by holding a scale or straight edge against the threads. If all the threads do not contact the scale (2) , the bolt should be replaced.