Colsibro® Motorcycle racing engines The restoration of original MV Agusta racing motorcycles is a passionate interest of Mark Kay, the director of MV Meccanica Verghera. His company has elected to use Colsibro®, a trademark alloy of Columbia Metals, to replace the motorcycles’ original cast iron valve guides. “Having produced replicas of the 1972 3- and 4-cylinder engines we are always looking for improvements on all aspects of the engine,” explains Mark. “We have spoken to some top car and bike engine designers and have now moved on to use Colsibro® as our valve guide material. ” Colsibro® has replaced MV Meccanica Verghera’s use of Colphos 90, a phosphor bronze material also available from Columbia Metals. “On our ?rst engines we decided to use Colphos 90 for guides,” continues Mark. “Th

Join for free to read