Originally Posted by
jack2003
cool i was ready to start ripping out the timing chain as it has never been changed.
had alook online everywhere for a workshop book but am sure its true as everyone has said there is no diffrence in the head or engine to a 2.0 zetec.. but is the head assembly the same?
cheers chris
The head is different to a 2L Zetec, valves and ports are identical, first it has variable valve timing and the inlet cam is slightly different, the valve springs are different and 2.0L Zetecs have hydraulic lifters and ST170's are solid. It will bolt onto a Zetec block but you'd need to remove the variable valve timing etc but the ST170 head is better.