power steeing pump upgrade

[1MadEngineer]

I run superior H/D tie rod ends and 4140 chromoly steering arms fully adjustable. I'll port the pump and go from there, I have just spoken to superior and they also said that port work as old mate did it to his and he runs 36's

IMO, refresh your whole system! Ideally upgrade to GU box and pump, only cus it will be newer, the strength differential is tiny. The sector shaft / piston / power heads are nearly identical. The pumps too are similar BUT what you will find is a HUGE difference in pressure output, I have measure 500psi differences in similar pumps with similar mileage/models. For 'performance' usage, the main system relief should be modified to a minimum of 1500psi and max of 1900psi. Your old pumps for example usually only put out 800-1150psi. There are also a few tricks that can be done to 'prioritize' the flow command curve. ideally also tap the box for hydro assist, that way it can be capped off until you decide to use it. Hyd assist done correctly will also solve the issue of broken sector shafts which is very common on GU boxs.

HTH - let me know if you need more info

Greg