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Piston and cylinder dimensions > < Sawn conrods

A3 Mk1

4-cyl TDI®-Engine, Mechanical Components
Dismantling and assembling pistons and conrods
Checking piston projection at TDC
 
W00-0511

Special tools and workshop equipment required

  • ◆ Special tool VW 382/7
 
W00-0129
  • ◆ Special tool VW 385/17
 
V13-0353

→ Piston projection at TDC must be measured when installing new pistons or a short engine. Depending on piston projection, install the relevant cylinder head gasket according to the following table.

Piston projection above top surface of cylinder block

Identification
(No. of holes)

0.91 mm ... 1.00 mm

1

1.01 mm ... 1.10 mm

2

1.11 mm ... 1.20 mm

3
 
A15-0802

→ Cylinder head gasket identification

  • ◆ Part-No. = Arrow 1
  • ◆ Production control code = arrow 2 (can be disregarded.)
  • ◆ Holes = arrow 3

Note:

If the measured values for piston projection are not the same for all the pistons, use the highest value to determine the correct gasket size

Piston and cylinder dimensions > < Sawn conrods