Sleeves and Liners – Metallurgic Magic
Dry sleeves and wet liners have long been used to repair and restore cracked or worn engine cylinders, but they are also used to reinforce aluminum blocks that are being built for serious performance applications.
Honing Aluminum Blocks
Manufacturers who produce “linerless” hypereutectic aluminum blocks today include Audi, BMW, Honda, Mercedes, Porsche, Volkswagen, Volvo, and Yamaha. Most late-model engines have aluminum blocks to save weight, including most of the familiar domestic V8s such as Chevy LS, Ford 4.6L modular and 5.0L Coyote, and Chrysler 5.7L and 6.1L Hemi. Yet these have iron sleeves.
