I asked this once before, burried deep in another post but got no replies. Are there any charts like this one for our cars? Sure would help (me)!

 

No, not that I know of at least. Though, all the info needed to do that is in WSM and in here.

 

Get the tech spec manual for the model in question. Turn to the cam spec page. Take the opening & closing degree specs & add them together. Add 180 & you get the duration. For example, on the chart you posted the intake opens at 27 & closes at 63. 27 + 63 = 90. Add 180 to 90 & you get 270 which is the total duration. Porsche doesn't give lobe center or overlap specs, why I don't know.

Hammer