MetroMPG hit the nail on the head, the key here is the fact that a power rack will have a different steering ratio than a manual rack, which means that all things being equal (in other words, ignoring the resistance generated by the plumbing) a power rack with no power will be harder to turn than a manual rack. I have tried engine off coasting in my car at speed and found the steering effort to be much too high, I don't think I could make an emergency avoidance maneuver without power assist. Yes, I know you don't want to discuss safety concerns, just trying to give an honest assessment of the feasibility of doing this. Granted I did not unhook the lines from the pump and loop them when I tried this.
__________________
|