Piston Ring Gap - Installation Check

Piston-ring end gap at installation and worn - typical 0.1–0.2 % of bore new, scrap at 0.5 %.

Piston ringGapEngine

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

g_{new} \approx 0.0015 D, \quad g_{max} \approx 0.005 D

Symbol	Meaning	Unit
$D$	Cylinder bore	mm
$g$	End gap	mm

Source: MAN ES Overhaul Manual

Piston-ring end gap at installation and worn - typical 0.