Well, it had to happen...

~30K on a custom built radically street ported 3 mm apexes (for refrence to my extensive other mods click on my sig)

Something internal went.

Symptoms

1. Compression is still adequate so no busted or chipped apex or side seals. Loss of vacuum from 12-14 to about 8-10 at 800 rpm

2. Huge amounts of white smoke and foam in the coolant (the coolant "o" ring certainly went bye-bye despite me keeping the engine temps consistently below 89 C (about 190F) and never higher than 104C (about 220) on a road course with immediate cool down lapping following).

3. Huge amounts of "crankcase" pressure (enough to blow the dipstick clean out of the tube). PVC valve is good and all oil routing seems normal.

Datalogit shows nothing out of the ordinary.

Replacement is already in the works.