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

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Clearance to Cylinder Head







Piston Distance, Checking TDC
Piston height of all cylinders must be measured when installing new pistons or short block. Head gasket is then selected according to cylinder with highest piston height.

- select gasket from the following table
Piston Identification
Height Notches

Mechanical Lifters 0.67-0.80 mm 1
0.81-0.90 mm 2
0.91-1.02 mm 3
Hydraulic Lifter 0.66-0.86 mm 1
0.87-0.90 mm 2
0.91-1.02 mm 3




- identification of cylinder head gasket
^ replacement part no. at black arrow
^ number of notches at white arrow

Note: Always select gasket thickness according to piston height above top of cylinder block.