Operation CHARM: Car repair manuals for everyone.

Piston Ring Gap & Groove Clearance

Piston Ring Compression Second Groove Side Clearance 0.0008 - 0.0031 Inch (in)
Second Ring Gap 0.0012 - 0.0177 Inch (in)
Top Groove Side Clearance 0.0020 - 0.0035 Inch (in)
Top Ring Gap 0.010 - 0.020 Inch (in)
Piston Ring Oil Gap 0.010 - 0.030 Inch (in)
Groove Clearance 0.0005 - 0.0087 Inch (in)