Checking Piston-Ring End Clearance
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Push in the piston ring at a right angle to the cylinder wall from above until it is approx.15 mm away from the edge of the cylinder.
| Piston ring |
New [mm] |
Wear limit [mm] |
| 1st compression ring |
0.20... 0.30 |
0.80 |
| 2nd compression ring |
0.50... 0.70 |
0.80 |
| Oil scraper ring |
0.25... 0.50 |
Not yet determined |
Courtesy of PORSCHE CARS NORTH AMERICA, INC.