Piston Ring Type - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Piston Ring Type

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Old 04-02-2003, 10:18 PM
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Default Piston Ring Type

1993 Bonneville SSEI
There are 3 different ring styles that could be used on this engine:
1) 1.5mm top groove, 1.5mm second groove, 3.0mm shallow oil groove (0.170"
or less oil groove depth).
2) 1.2mm top groove, 1.5mm second groove, 3.0mm deep oil groove (0.190" or
more oil groove depth).
3) 1.2mm top groove, 1.5mm second groove, 2.0mm deep oil groove (0.190" or
more oil groove depth).

which one, how do i find out?
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