Piston Projection In TDC, Checking: Notes
WARNING: This page is about a different car, the 2010 Volkswagen Jetta and 2009 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
Special tools and workshop equipment required
- Measuring Bar VW 382/7
- Magnetic Plate 50 mm Dia. VW 385/17
- Dial Gauge (0-10 mm) VAS 6079
Test Sequence
When installing new pistons or working on a partial engine, check the piston projection in Top Dead Center (TDC) on all pistons. Depending on the piston projection, install the corresponding cylinder head gasket according to the following table.
NOTE:
To measure the piston position at TDC, rotate the engine clockwise.
If varying values occur when measuring the projection, use the gasket for the largest value.
| Piston Projection | Identification, Notches/Holes |
|---|---|
| Dimensions in mm | |
| 0.91...1.00 | 1 |
| 1.01...1.10 | 2 |
| 1.11...1.20 | 3 |