Good article, but there are more than a few differences. I don't have closed chamber heads. Total above-piston volume is in the range of 5 cc at TDC excluding valve reliefs, which add another 6 cc, totalling only half of his reported 22 cc. And there is no problem at all with temperature, even after miles of freeway running or cruising around town the engine is around 190 degrees with 100% stock cooling components.

I am not saying that zero decking is bad, but why not just use pistons of the proper compression height?