Well finally took the head of, and to my suprise it was a coscat head on a 92 calibra turbo!! i though they only did them 94 onwards on the turbo?
I can you guys confirm this is a coscast? or is a KS coscast?
I recently used STP total cleaner the one in a silver bottle, and lot of ppl on club calibra, more so JohnA sweras by the stuff, the inlet valves looked very shiny, i was expecting lots of carbon etc...just sent the head to a engineering comp to get the snapped stud out!
I tried to see if there was any side to side movements on the pistons and there was a little, how much movement should there be?