Buick Workshop Service and Repair Manuals

Piston Ring: Specifications

Ring Groove Depth
Top Compression ..............................................................................................................................................................  4.3894.519 mm (0.173-0.178 in.)
2nd Compression .............................................................................................................................................................  4.389-4.519 mm (0.173-0.178 in.)
Oil Control .......................................................................................................................................................................  4.204-4.334 mm (0.165-0.171 in.)

End Gap
Top Compression ...............................................................................................................................................................  0.2540.635 mm (0.0100.025 in.)
2nd Compression .............................................................................................................................................................  0.254-0.635 mm (0.010-0.025 in.)
Oil Control .......................................................................................................................................................................  0.381-1.397 mm (0.015-0.055 in.)

Side Clearance
Top Compression .........................................................................................................................................................  0.033-0.079 mm (0.0013-0.0031 in.)
2nd Compression .........................................................................................................................................................  0.033-0.079 mm (0.0013-0.0031 in.)
Oil Control .....................................................................................................................................................................  0.028-0.206 mm (0.011-0.0081 in.)

Ring Width
Top Compression ........................................................................................................................................................  1.476-1.497 mm (0.0581A).0589 in.)
2nd Compression ...........................................................................................................................................................  1.47-1.497 mm (0.0581-0.0589 in.)
Oil Control ...................................................................................................................................................................  2.850-3.002 mm (0.1122-0.1182 in.)