With the recent pin talk I thought I would share an experience. Honda S2000 engine, 9000 rpm, 11:1 static, Garrett GT3540 with 28 psi boost on methanol. Too much you say???
Made power and accelerated like I can't even begin to explain, for its size. Engine developed a "tick". Sounded like a loose valve. Checked the valves and they were perfect. I knew better than to keep running it so I tore it down and found this. The pin said uncle and thankfully I listened.
Hard to see in my amateur pics but in the last photo the ID of the pin boss on the right side of the piston is self destructing where the crack in the pin was located. Needless to say, I am extremely lucky it didn't come apart and saw the engine up into a bunch of pieces.
Original pin is .904" x .196" taper wall. Have new CP straight wall DLC pins for it now, haven't put it back together yet.