Unfortunatly I can't base my logic on physics, as I don't have the book knowledge on that one. At least however your making assumptions on logic and not what sounds like hearsay passed on as propoganda.

Ive run 17psi on a stock valvetrain Honda, To use an example of another motor outside of the Honda world, let's take a 4g63 from a TSi Talon. They routinely run 30psi on a stock bottom end and have no issues from 50 trim t3/t4's.

Your right. I shouldn't have been so harsh with my reply.

However, high boost, say 20psi, will not float the valves.

I would like John or Taylor to also step in, perhaps they can confirm or disprove my belief on this.

I have also seen several stock head Honda's running 20+psi. (Specificly an Si making 400whp on a stock head, and an LS doing the same, making I believe 320.) Both were on race test. Both with forged internals.