I plan to use a Ford Granada steering rack driven by the BMW PAS pump (because it came with the BMW engine). The BMW pump is conveniently marked with 110 bar output pressure but I struggled to find the spec for the comparable Ford pump.
I eventually found a very helpful Steering Rack specialist company (Western Power Steering) who confirmed that the original pump would have been rated at about 90 bar, but it is the nominal flow that is more important and both pumps would be similar and the BMW pump would be more than capable of working the rack.
I guess time will tell when I get to drive the car!
First, I temporarily refitted the BMW Power assisted steering pump(still in primer) to work out routing of the high pressure lines.
Power Steering pump by
Sabrebuilder, on Flickr
To connect the Ford Granada steering rack to the BMW steering pump I started with a new Ford high pressure hose and a BMW hose.
Power Assisted Steering Hose by
Sabrebuilder, on Flickr
I then cut the pump end off both pipes ensuring that I kept the Ford restrictor fitted in the middle of the Ford pipe. Both ends were slightly reformed to exit at the right directions. I used the BMW rack end as it suited my solution better than the pump end.
Power Assisted Steering Hose by
Sabrebuilder, on Flickr
I then visited Hydraulic Components and Systems Ltd in Hemel Hempstead who crimped on a fitting to join the two pipes together. Cost me £20 and they fitted it while I waited. HCS advised that the 'cone' connector is good for an incredible 450 bar so should adequately handle the 110 bar from the BMW pump.
Power Assisted Steering Hose by
Sabrebuilder, on Flickr
Power Assisted Steering Hose by
Sabrebuilder, on Flickr
Supply and return hoses supported by front chassis cross rail.
PAS hoses by
Sabrebuilder, on Flickr
I made a small support bracket that utilises one of the steering rack mounting bolts.
PAS hose support bracket by
Sabrebuilder, on Flickr
I'm using the BMW PAS reservoir. (Mounting cradle will be painted.)
PAS Reservoir by
Sabrebuilder, on Flickr
I've also bought a new 'reservoir to pump' hose. New crush washers to be fitted on final assembly.
PAS hoses by
Sabrebuilder, on Flickr
Can't wait to see if all works!!
So another job ticked off the list..........
Next up will be fitting the front brakes and pipes.......
...peter