Since the 1950s, some motorcycles, notably ones from Ducati, have used desmodromic valvetrains in their engines. Why is this ...
Desmodromic valvetrains allow for higher revs without needing to worry about valve float. So why do automakers not often use them outside of motorcycles?
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 ...
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