Add Yahoo as a preferred source to see more of our stories on Google. Automobiles were still in their relative infancy in 1905, but they had been growing more popular for years. There was a problem, ...

Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

Built in Chicago between 1906 and 1909, Silent Knight automobiles were powered by Charles Knight's four-cylinder, 40-horsepower, sleeve-valve engine. These automobiles had weak points, but the engine ...