Power steering boxes

[V8MoneyPit]

Got the early 3 bolt power steering box on my 110. Can I fit any of the other types? Are the pipe positions the same, etc? Are Disco ones the same?

If I can fit any of them, it opens up more possibilities on eBay!

[j99mud]

when my power steering pump packed up i was told that it was very important that i put the same type back in so i went for a reconditioned one from landrover! Not quite sure of the importance of putting the same  type back in but didnt want to risk it!!!

[hobbit]

We replaced a 3 bolt for a second hand 4 bolt unit with resevoir and pipes, ok on a classic rr, (or was it the other way round?), no probs with that at all

[muddyweb]

The 3 bolt boxes use different fittings to the 4 and 6 bolt boxes AFAIK.   The 3 bolts are imperial and the 4/6 are metric.  You can probably change them over if you change the pipes too, but that's a bigger job.

[Range Rover Blues]

I heard the 3-bolt boxes are stronger, plus you can pick them up S/H for less as they are in less demand.

[hobbit]

The 3 bolt boxes use different fittings to the 4 and 6 bolt boxes AFAIK.   The 3 bolts are imperial and the 4/6 are metric.  You can probably change them over if you change the pipes too, but that's a bigger job.

That must have been why they were ok, had all the parts off the donor vehicle

[V8MoneyPit]

Thanks everyone. Can always rely on excellent replies here. I'll keep my eyes peeled for a 3 bolt one to make life as easy as possible.

The problem is the spline is worn on both shaft and arm, so the nut keeps working loose. I doubt any company would accept a worn shaft spline on an exchange unit so I'd end up having to pay the surcharge too..... ouch!