Here's a video that demonstrates how the VTEC change-over takes place. It's in Quicktime format and is about 1.5 mb.

www.s2kca.com/greg/How_VTEC_Works.mov

 

That was a cool movie

 

Very cool movie. I had it in my mind sort of right, based on reading various explanations, but didn't really consider how the third lobe was used to change the timing for *both* valves. After seeing how it's done, I had a "Duh!" moment.

Tony