[Christ]

It works, RH. Thanks for the help.

13B - I missed a post and will answer it now -

Dynamic compression: I don't recall the formula for it, but it's something like you said. The idea is that less charge volume into a cylinder lowers the cylinder pressure at TDC, so the dynamic compression figure is based in part on VE compared to Static compression ratio.

Since the density of the charge changes with temperature, and thus will affect pressure at TDC, the dynamic figure is also affected by engine temperature and factors such as charge heat soak, blow-by [gasket and ring leaks, sticky valves, etc] and others.

I'm not sure why it's called Dynamic compression, I think there could be a better name for it, but that's always how it's been referred to every time I discuss engines with someone and it gets brought up.

The effect of dynamic compression is why people have been able to successfully run extremely high compression ratios with boost on pump gas without destroying their engines, to some extent. There are still limits.