Porsche Workshop Service and Repair Manuals

Piston: Specifications
Piston Ring Side Clearance

Piston ring vertical clearance

Groove 1  ..............................................................................................................................................................  0.040 - 0.075 mm (0.0016 - 0.0029 in)
Groove 2  ..............................................................................................................................................................  0.030 - 0.065 mm (0.0012 - 0.0025 in)
Groove 3  ..............................................................................................................................................................  0.020 - 0.055 mm (0.0008 - 0.0022 in)