Abstract: A restoration sleeve for the remanufacture of cast iron engine blocks or aluminum blocks with cast iron liners includes a sleeve formed of cast iron and having a relatively thin wall, a selected length, an outer diameter to achieve a non-interference fit within an overbored cylinder, an inner diameter equal to the original specifications of the original manufacturer of the engine block, and a helical cross hatched inner surface finish. The sleeves are manufactured by placing an unfinished sleeve in a boring fixture, boring the inner surface to a selected diameter, transferring the bored sleeve to a honing fixture, and honing the inner surface to the required diameter and surface finish. An adhesive is applied to the restoration sleeve and the overbored block cylinders, and the sleeves are inserted into the overbored cylinders wherein the adhesive is allowed to cure to thereby adhesively retain the sleeves within the block.

Abstract: A replacement cylinder for the remanufacture of cast iron engine blocks includes a sleeve formed of cast iron and having a relatively thin wall, a selected length, an outer diameter to achieve a slight clearance of fit within an overbored cylinder, an inner diameter equal to the original specifications of the original manufacturer of the engine block, and a helical cross hatched inner surface finish. The replacement cylinders are manufactured by placing an unfinished sleeve in a boring fixture, boring the inner surface to a selected diameter, transferring the bored sleeve to a honing fixture, and honing the inner surface to the required diameter and surface finish. An adhesive is applied to the prefinished replacement cylinders and the overbored block cylinders, and the replacement cylinders are inserted into the overbored cylinders wherein the adhesive is allowed to cure to thereby adhesively retain the replacement cylinders within the block.

Abstract: A surface mount overheat indicator device includes a flattened annular outer frame and an inner fusible disk positioned within the outer frame. The fusible disk is formed of a material which melts at a selected temperature. The outer frame has a plurality of adhesive relief apertures formed therethrough in circumferentially spaced relation. The fusible disk projects rearwardly of a rear surface of the outer frame to define an adhesive receiving space between the rear surface of the outer frame and a surface on which the device is adhesively installed. The adhesive receiving space and the adhesive relief apertures cooperate to prevent the positioning of a layer of adhesive or a pocket of air between the fusible disk and the surface on which the device is installed to avoid interfering with the transfer of heat therefrom.