You need to check a few things before removing head again,


Comp test,
leak test with pressure gauge on the coolant system,
check temps with a temp gun, or a accurate gauge.


Is it smoking?
are you looseing oil or water, are they mixing?









i've seen a few cracked cvh heads, i'm working on a RST this weekend that has cracked the head.
But its cracked between valve seats and valve seat to spark plug hols.