P6 power steering conversion

Not as far as l know in my severely limited knowledge. If anything l would have thought they might supply a lesser pressure than the original pumps which wouldn't necessarily be a bad thing as the old motors seem to be a bit over-assisted which you definitely notice with the P5B. I think the electric pumps also supply assistance a bit more selectively rather than pumping more the faster you go. Apart from originality l don't know why you'd use a mechanical pump when retrofitting a PAS system.
 
The Rovering Member said:
Not as far as l know in my severely limited knowledge. If anything l would have thought they might supply a lesser pressure than the original pumps which wouldn't necessarily be a bad thing as the old motors seem to be a bit over-assisted which you definitely notice with the P5B. I think the electric pumps also supply assistance a bit more selectively rather than pumping more the faster you go. Apart from originality l don't know why you'd use a mechanical pump when retrofitting a PAS system.
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You probably wouldn't want to use it with a 35amp alternator, so you'd likely need a Lucas A127 75amp upgrade and heavier wiring as part of the deal. But you are correct. The reasons modern cars use electric pumps is that they are a) more efficient and fleet economy is king due to EU regulations, you don't have all that rotating pulleys and hydraulics dragging all the time when there is no load and the setup is physically lighter overall. b) packaging - you can stick your pump anywhere you can feed a line to the steering box. In modern small cars now aircon is effectively standard, it simply might not be possible to easily mount and drive both directly from the engine.
 
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