An engine block assembly , comprising: a plurality of cylinder liners , each cylinder liner including a liner member extending longitudinally from a top end to a bottom end and presenting a length (L) between said top and bottom ends , said liner member including an inside surface extending around a center axis and an oppositely facing machined outside surface , said outside surface presenting a first outside diameter (D 1 ) along a first portion of said length (L) and a second outside diameter (D 2 ) along a second portion of said length (L), and said first outside diameter (D 1 ) being less than said second outside diameter (D 2 ); each of said cylinder liners including a bonding layer of a first aluminum-based material applied to said outside surface along said first portion by thermal spraying; a block formed of a second aluminum-based material and presenting a plurality of bores each for receiving one of said cylinder liners ; and said first aluminum-based material of the bonding layer of said cylinder liners being bonded to said second aluminum-based material of said block , wherein said block presents a cooling chamber spaced from each of said bores by said second aluminum-based material, said block includes an upper surface presenting a plurality of bridge areas , each bridge area is planar and located between adjacent bores , said block includes a plurality of cooling passages each extending from said cooling chamber and through a portion of said block between said bores for conveying cooling fluid from said cooling chamber , wherein the bridge areas are used to form the cooling chamber and the cooling passages . a plurality of cylinder liners , each cylinder liner including a liner member extending longitudinally from a top end to a bottom end and presenting a length (L) between said top and bottom ends , said liner member including an inside surface extending around a center axis and an oppositely facing machined outside surface , said outside surface presenting a first outside diameter (D 1 ) along a first portion of said length (L) and a second outside diameter (D 2 ) along a second portion of said length (L), and said first outside diameter (D 1 ) being less than said second outside diameter (D 2 ); each of said cylinder liners including a bonding layer of a first aluminum-based material applied to said outside surface along said first portion by thermal spraying; a block formed of a second aluminum-based material and presenting a plurality of bores each for receiving one of said cylinder liners ; and said first aluminum-based material of the bonding layer of said cylinder liners being bonded to said second aluminum-based material of said block , wherein said block presents a cooling chamber spaced from each of said bores by said second aluminum-based material, said block includes an upper surface presenting a plurality of bridge areas , each bridge area is planar and located between adjacent bores , said block includes a plurality of cooling passages each extending from said cooling chamber and through a portion of said block between said bores for conveying cooling fluid from said cooling chamber , wherein the bridge areas are used to form the cooling chamber and the cooling passages . <EOS>