into the throttle valve, which could damage it, or lead to priming. The throttle is basically a poppetvalve, or series of poppetvalves which open in sequence
cylinder banks, instead of the usual 60°. The valvetrain consisted of 12 poppetvalves timed by two chain-driven overhead camshafts. Compression ratio was
and may be modified in a similar manner. Increasing the size of the poppetvalves in the engine, thus decreasing the restriction in the path of the fuel–air
current switching, virtually eliminating point wear concerns. In 1967, Ferrari and Fiat Dinos came equipped with Magneti Marelli Dinoplex electronic ignition