RE: CC'ing a head

[Racery@comcast.net]

That works- just make sure you have a really good straightedge to smooth the 
top,

and then dunk  the lump of clay into water and measure the relative 
displacement.

As you say, displacement IS displacement.

hth,

Toby


> I've never done this, but I've heard you can do this with modeling clay
> as well.
> With valves closed, fill the chamber with clay until level.  Remove clay
> and place
> in a graduated cylinder or whatever you have to measure with.
> Volume is volume, right?