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Home >> Porsche >> 2012 >> Panamera 4S >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 13 - Engine - CRANKGEAR, Pistons -- PANAMERA (970) >> WM 131003 Measuring Pistons (Includes Measuring Cylinder Bore) (PANAMERA S E-Hybrid, PANAMERA S Hybrid) >> Checking Piston-Ring Vertical Clearance

Checking Piston-Ring Vertical Clearance

  1. Clean ring groove on piston before checking clearance.
    Fig 1: Checking Piston-Ring Vertical Clearance
    G09804296Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Piston ring New [mm] Wear limit [mm]
1st compression ring 0.04... 0.08 0.20
2nd compression ring 0.03... 0.07 0.20
Oil scraper ring 0.02... 0.06 0.15
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