Sidekick JSS 4D Hard Top 2WD L4-1.8L (1997)
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Piston clearance: Measure cylinder bore diameter and piston diameter to find their difference which is piston clearance. Piston clearance should be
within specification as given below. If it is out of specification, rebore cylinder and use oversize piston.
Piston Clearance: 0.02 - 0.04 mm (0.0008 - 0.0015 inch).
NOTE: Cylinder bore diameters used here are measured in thrust direction at two positions.
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Ring groove clearance: Before checking, piston grooves must be clean, dry and free of carbon. Fit new piston ring into piston groove, and measure
clearance between ring and ring land by using thickness gauge. If clearance is out of specification, replace piston.
Ring Groove Clearance:
Top: 0.03 - 0.07 mm (0.0012 - 0.0027 inch).
2nd: 0.02 - 0.06 mm (0.0008 - 0.0023 inch).
Oil: 0.06 - 0.15 mm (0.0023 - 0.0059 inch).
