LeSabre V6-231 3.8L VIN C SFI (1990)
Piston: All Technical Service Bulletins
1993 - 1994 (L27) Piston Specifications
PISTON
Piston
Clearance (44 mm from top of piston) ................................................................................................................ 0.010-0.056 mm (0.0004-0.0022 in.)
PISTON RINGS
Ring Groove Depth
Top Compression .......................................................................................................................................................... 4.294-4.424 mm (0.169-0.174 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 .......................................................................................................................................................... 0.305-0.559 mm (0.012-0.022 in.)
2nd Compression .......................................................................................................................................................... 0.762-1.016 mm (0.030-0.040 in.)
Oil Control .................................................................................................................................................................... 0.254-0.762 mm (0.010-0.030 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 (0.0011-0.0081 in.)
Ring Width
Top Compression ...................................................................................................................................................... 1.176-1.197 mm (0.0463-0.0471 in.)
2nd Compression ...................................................................................................................................................... 1.476-1.497 mm (0.0581-0.0589 in.)
Oil Control ................................................................................................................................................................ 2.850-3.002 mm (0.1122-0.1182 in.)
PISTON PIN
Diameter ........................................................................................................................................................... 22.995-23.000 mm (0.90531-0.90551 in.)
Fit in Piston ............................................................................................................................................................... 0.010-0.020 mm (0.0004-0.0008 in.)
Fit in Rod (clearance) ............................................................................................................................................... 0.018-0.043 mm (0.0007-0.0017 in.)
