K 3500 Truck 4WD V8-5.7L VIN R (1998)
Piston Ring: Specifications
Piston Rings (End Gap Measured In Cylinder Bore)
Piston Compression Ring Gap
Production - Top Groove .................................................................................................................................... 0.25 - 0.40 mm (0.098 - 0.015 inch)
Production - 2nd Groove ..................................................................................................................................... 0.46 - 0.66 mm (0.018 - 0.025 inch)
Service - Top Groove .......................................................................................................................................... 0.25 - 0.50 mm (0.009 - 0.019 inch)
Service - 2nd Groove ............................................................................................................................................ 0.46 - 0.80 mm (0.18 - 0.031 inch)
Piston Compression Ring Groove Clearance
Production - Top Groove .......................................................................................................................... 0.0303 - 0.070 mm (0.0012 - 0.0027 inch)
Production - 2nd Groove ............................................................................................................................... 0.040 - 0.080 mm (0.0015 - 0.003 inch)
Service Limit - Top Groove ........................................................................................................................ 0.030 - 0.090 mm (0.0012 - 0.0035 inch)
Service Limit - 2nd Groove ......................................................................................................................... 0.040 - 0.100 mm (0.0015 - 0.0040 inch)
Piston Oil Ring Gap
Production ........................................................................................................................................................... 0.25 - 0.76 mm (0.009 - 0.029 inch)
Service ................................................................................................................................................................. 0.25 - 0.90 mm (0.009 - 0.035 inch)
Piston Oil Ring Groove Clearance
Production ................................................................................................................................................... 0.046 - 0.096 mm (0.0018 - 0.0037 inch)
Service ......................................................................................................................................................... 0.046 - 0.100 mm (0.0018 - 0.0039 inch)
