RE: .020" TEE-DEE Port Specs and durations
Dave, with engines this small, it is really hard to come up with accurate timing numbers. Having an engine sent to you to check for yourself is the best thing that could have happened. I could try to check the same engine and come up with figures that are contrary to what you get. The factory has the advantage of having dozens of blanks that they can port in different ways to see which one has the best running traits. Once they get a runner, they don't need to know what the timing numbers are, just dimensions of where the cuts are done. I think the important thing here is to use the TD as a bench mark. As accurate as Cox was, I'll bet TD .020 performance figures are all over the place.