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Measuring radial clearance of conrods > < Pistons and conrods - exploded view of components

A4 Cabriolet Mk2

Piston and cylinder dimensions
Piston and cylinder dimensions
There are different piston sizes specifically matched to the varying bore dimensions for cylinder block.
   
Cylinder bore Ø mmPiston Ø mm
84.510 ± 0.00584.490 ± 0.010 → Note
84.610 ± 0.00584.590 ± 0.010 → Note
84.710 ± 0.00584.690 ± 0.010 → Note

1)  Dimensions including coating (thickness 0.01 mm). The coating will wear down in service.
   

Measuring radial clearance of conrods > < Pistons and conrods - exploded view of components