I ran my 97 grand prix w/3800 series 2 engine for 5 - 10 min to get it to operating temperture,
Did compression test 3x on each cylinder and here are the results
#1: 155 -150 - 150psi
#2: 150 - 150 - 150psi
#3: 80 - 80 - 80psi (sh@t-f%ck)
#4: 160 - 160 - 160psi
#5: 170 - 170 - 170psi
#6: 180 - 175 - 175psi
If the compression on # 3 is that low and it was due to a ring, wouldn't there be blue smoke, cause I don't see any.