Cylinder liner

An engine, comprising:

• an engine block having a cylinder bore with a cylinder bore wall of predetermined diameter and a flange counter bore adjacent a top surface of said block having a radially extending stop surface and a circumferentially extending counterbore wall of relatively greater diameter than that of said cylinder bore wall;
• a cylinder liner having a main body disposed in said cylinder bore and a top flange disposed in said flange counter bore, said main body including an engagement portion engaging said cylinder bore wall and defining a fluid-tight fit to isolate said flange from exposure to liquid engine coolant and supporting said cylinder liner against radial movement relative to said block independently of said flange.

A method of replacing a spent cylinder liner of an internal combustion engine, comprising:

• removing the spent cylinder liner from a cylinder block of the engine;
• providing a replacement cylinder liner having a flange defining a shoulder and having an engagement portion necked down from the flange adjacent the shoulder such that the engagement portion extends substantially about a circumference of the replacement cylinder liner and comprises lower and upper portions separated from one another by a channel extending substantially about the circumference of the replacement cylinder liner;
• pressing the replacement cylinder liner into the cylinder block to provide positive engagement in an axial direction between the shoulder and a surface of the cylinder block, to provide an interference fit between the lower and upper portions and the cylinder block inhibiting fluid flow where the upper and lower portions engage the cylinder block, and to provide fluid flow within the channel between the lower and upper portions facilitating cooling of the engagement portion and the upper portion both inhibiting fluid within the channel from contacting the flange and inhibiting radial movement of the flange relative to the cylinder block.