Engine Disassembly 3

The cylinder bores are in excellent shape with no ridge-wear evident.  The edge shown in the picture is simply the boundary between the section of the bore that was polished by the rings, and the original finish.  A "fingernail test" showed no edge in the metal.  This is great news since if the other cylinders check out, this engine will not need a re-bore.

The cylinder bores are in excellent shape with no ridge-wear evident. The edge shown in the picture is simply the boundary between the section of the bore that was polished by the rings, and the original finish. A “fingernail test” showed no edge in the metal. This is great news since if the other cylinders check out, this engine will not need a re-bore.