968 Cabriolet L4-2990cc 3.0L DOHC (1993)
Piston Ring: Specifications
Piston ring side 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)
Piston ring end gap
Groove 1 ...................................................................................................................................................................... 0.20 - 0.50 mm (0.008 - 0.020 in)
Groove 2 ...................................................................................................................................................................... 0.20 - 0.55 mm (0.008 - 0.022 in)
Groove 3 ...................................................................................................................................................................... 0.30 - 0.90 mm (0.012 - 0.035 in)