Combustion seal including cylinder liner and shim

A method comprising:

• removing a cylinder head and a single-piece head gasket to expose a seal surface of a liner disposed in a bore of an engine block;
• measuring a height from the seal surface to a deck surface of the engine block with a vertical gauge or calipers;
• selecting a shim based on determining a difference between the height and a specified height;
• positioning the shim on the seal surface;
• and
• positioning the single-piece head gasket on the shim with the shim between the head gasket and the seal surface.

A method comprising:

• assembling a liner into a bore of an engine block such that a bottom surface of the liner abuts a ledge of the engine block, the bore elongated along an axis and the ledge spaced from a deck surface of the engine block along the axis, the engine block including a step wall extending from the deck surface to the ledge;
• measuring a height from a seal surface of the liner to the deck surface of the engine block;
• selecting a shim based on determining a difference between the height and a specified height;
• positioning the shim on the seal surface;
• and
• positioning a single-piece head gasket on the shim with the shim between the head gasket and the seal surface.