power steeing pump upgrade

[johno90]

Smaller pulley on the pump would fix your problem straight up. Might be worth looking into, i had that proplem on my old gq when revs were below 500, just lifted my idle a little and all fixxed.

[nissannewby]

Maybe look at the hydro assist. I have seen you want to run 37" stickys in the future maybe plan ahead. Anything will 'stall' if put in a bad spot. If the output is increased from there you may find the next weak link could be tie rod end, knuckle etc. Maybe for the cost of insuring nothing gets broken leave it as it is.

[Ben-e-boy]

Maybe look at the hydro assist. I have seen you want to run 37" stickys in the future maybe plan ahead. Anything will 'stall' if put in a bad spot. If the output is increased from there you may find the next weak link could be tie rod end, knuckle etc. Maybe for the cost of insuring nothing gets broken leave it as it is.

yeah I have emailed superior to check out their hydro kit

Should probably put a seal kit through it though and freshen it up before anything else

[Ben-e-boy]

I have had a chat with the hydraulic fitter at work and he said that the pump stalls due to flow not pressure, So what I plan to do when I put a seal kit though it I will drill out the ports to increase flow and this will make a difference to my problem. obviously the extra flow and subsiquent pressures on the steering system, that load will be transfered to my steering box, so if any one know of a gu steering box for sale I'm keen
When I get around to it i'll do a diy thread on this.

[nissannewby]

Just check yours compared to another some of the later GQ's had the larger box. I will compare it with mine on the weekend I have a larger one in mine and the mrs has a small one in hers.

[Ben-e-boy]

mines 96 what model is the mrs's

[Robo]

Can you fit a GU box and pump as they are made genuine to go together.
Would possibly still have slow rev stall but at least it's a starting point.

sell what you have as working gq gear, probably worth more $$ not modified.
may find your left with something modified, no one wants.

GU pitman arm requires different tierod end.

when I got my new GQ T/R ends, local guy had pics with sizes ,so you may be able to get T/E localy that fits GQ drag link and GU pitman arm with out going to alot of bother obviously you need an adjustable link in the first place.

Think Superior or Snake Racing do this mod drag link as a ready part.
"GU one end and GQ the other".
Cheers

[Ben-e-boy]

Can you fit a GU box and pump as they are made genuine to go together.
Would possibly still have slow rev stall but at least it's a starting point.

sell what you have as working gq gear, probably worth more $$ not modified.
may find your left with something modified, no one wants.

GU pitman arm requires different tierod end.

when I got my new GQ T/R ends, local guy had pics with sizes ,so you may be able to get T/E localy that fits GQ drag link and GU pitman arm with out going to alot of bother obviously you need an adjustable link in the first place.

Think Superior or Snake Racing do this mod drag link as a ready part.
"GU one end and GQ the other".
Cheers

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

[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

[Ben-e-boy]

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

No worries mate, will do, I see you're DGR so there is every chance I'll run into you at a comp, or weekend play around the place I'm Keen to discuss face to face someday, and pic you brains on a few things
Cheers
Benny