So I'm measuring my piston to deck height today so I can figure out exactly what my static CR is. I hold the straight edge over the center of the piston, and I can barely fit a 25/1000 feeler guage in there, move the straight edge to the top of the piston, and the feeler guages doesn't fit!
So I look closely and I notice that the piston is actually tilting forward! Come to find out that this is actually normal. Pistons (especially forged pistons) have enough clearance to pivot off the rod and rock back and forth in the bore. So I push on the top of the piston, and it tlits back!
Sorry, I just found that really surprising.
