Variable Valve Timing & Lift Study Course

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Variable Valve Timing & Lift Study Course video is a collection of valve train technologies videos that we own. Used by high-schools and technical colleges (with license) and can also be accompanied by its dedicated book.

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Very good video. How does the pcm advance the timing on a mechanical distributor?

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Regarding porsche variocam, how does the valve returns to it's closed position after being actuated by the inner tappet if only the the outer tappet is connected to the spring?

Runmeerkat