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Home >> Mercury >> 2000 >> Cougar V6-153 2.5L DOHC VIN L SFI >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston Ring, Engine
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Piston Ring, Engine

Piston Ring Gap
-- Specification 82.4 mm diameter gauge		Compression (Top)-Gauge Diameter 0.100 - 0.250 Millimeter (mm)
Compression (Bottom)-Gauge Diameter 0.27 - 0.42 Millimeter (mm)
Oil Ring (Steel Rail)-Gauge Diameter 0.15 - 0.65 Millimeter (mm)
Compression (Top) Service Limit 0.50 Millimeter (mm)
Compression (Bottom)-Service Limit 0.65 Millimeter (mm)
Oil Ring (Steel Rail)-Service Limit 0.90 Millimeter (mm)
Side Clearance Compression (top) 0.040-0.075 Millimeter (mm)
Compression (bottom) 0.040-0.085 Millimeter (mm)
Oil Ring Snug Fit
Service Limit 0.010 Millimeter (mm)
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