Audi AMB Service Manual page 105

ENGINE 1.8 Liter 4-Cyl. 5V Turbo Engine Mechanical, Engine Code(s): AMB
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Measure pistons approx. 10 mm from lower edge of skirt, at 90 ° to piston pin axis.

Deviation from nominal dimension: max. 0.04 mm

Checking cylinder bore
Fig. 141: Checking Cylinder Bores
Courtesy of VOLKSWAGEN UNITED STATES, INC.
Special tools, testers and auxiliary items required
Internal dial gauge 50...100 mm

Take measurements at 3 positions in both lateral - A - and longitudinal - B - directions.

Deviation from nominal dimension: max. 0.08 mm

Piston and cylinder dimensions
Honing dimension
Basic dimension
Oversize
*Dimensions without graphite coating (thickness 0.02 mm) Graphite coating wears away.
15 - ENGINE - CYLINDER HEAD, VALVETRAIN
2005 Audi A4 Quattro
mm
mm
1:01:00 AM Page 93
Piston dia.
80.950 * See note
81.450 * See note
Cylinder bore dia.
81.01
81.51