Quote: Now I actually get to 40 all in at about 1500, maybe even a tad earlier. Took it out and no pinging at all. I hammered it a bunch of times and it makes no valve noise at all.
Not sure if you know it but pinging/knocking and detonation are unrelated to what the valves are doing. You've mentioned "valve chatter" or similar comments more than once and I wonder if you are mistaken. Detonation relates to uncontrolled, early ignition from a variety of reasons, none of which are directly related to the valves.
