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Engine cylinder head, valve gear > < Dismantling and assembling pistons and conrods

A4 Mk1

4-Cylinder engine (5-valve), Mechanics
Dismantling and assembling pistons and conrods
Piston and cylinder dimensions

Piston
diameter

Cylinder bore

Basic dimen.

mm

80.9751)

81.01

Oversize

mm

81.475 1)

81.51

    1)    Dimension without graphite coating (thickness 0.02 mm).
        The graphite coating wears away.

Engine cylinder head, valve gear > < Dismantling and assembling pistons and conrods