I've been tearing into my Saab 93 after trying to re-torque the head bolts with no success, I'd say I'm far from familiar with this motor. I managed to get the head off and everything to TDC, Just curious. It seems as if someone along it's life has changed the timing chain and all looks very good, my question is can I change the head gasket without doing the timing at this very moment? I do plan to do it but at the moment I do not have a lift or the time to fight doing it with the motor in the car. Any help would be greatly appreciated.