However, in the raw mechanical world of cam lobes and lifters valve action doesn't work this way, especially if you're working with a street cam. In fact, engines have a different job to do on the ...

VTEC is Honda's variable valve technology used to change the amount of valve lift and valve duration in the engine. By altering valve lift and duration, you can influence how much air the engine ...

One of the distinguishing features is that they don't need valves to ... engines have three power phases instead of just the one of a four-stroke engine. This, along with the way the rotor is ...

But the way VTEC goes about switching cam profiles ... a piston inside the rockers is pressurized with oil, locking all three cams together to increase valve lift. This is where that signature ...