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Home >> Ford >> 1998 >> Crown Victoria V8-281 4.6L SFI >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston Ring, Engine
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Piston Ring, Engine

GENERAL SPECIFICATIONS
Ring Gap
Compression (Top) 0.75 mm (0.02953 inches) MAX
Compression (Bottom) 0.75 mm (0.02953 inches) MAX
Oil Ring
Side Clearance 1.25 mm (0.049213 inches) MAX
Compression (Top) 0.040-0.090 mm (0.0015748-0.0035433 inches)
Compression (Bottom) 0.030-0.080 mm (0.001181-0.0031496 inches)
Oil Ring Snug Fit
Service Limit 0.015 mm (0.000591 inches) MAX
Ring Gap
Compression (Top) 0.13-0.26 mm (0.005118-0.010236 inches)
Compression (Bottom) 0.30-0.55 mm (0.011811-0.0216535 inches)
Oil Ring (Steel Rail) 0.15-0.66 mm (0.00591-0.02598 inches)
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