........."squish" is a myth. Liquids don't compress.
Jerry
But a little of it can leak thru the clearances in the hydraulic lifters. But it's probably not significant. Kind of like what you say about being able to "eyeball" the difference between cam grinds.
Here's a snip from
this website."Hydraulic lifters are traditionally thought to have a common weak point: the pumping design. This type of lifter collapses a little as the cam pushes up, and the resistance of the rocker arms keeps the pushrod in place."
