@DAWEST So you raised the pressure in it and that caused it to crack correct? I believe psc also sells a modified drop in pump for the duramax that will work. Supposed to be modded for more pressure.

I have a 6.7 steering box in mine so it works just fine without more pressure. They work a lot better the. A 7.3 steering box.

 

That's my understanding of it. I was not using a pressure gauge at the time so I cannot verify what the pressure was. From what I have read these pumps in stock form with the correct pressure relief valve will be at 1350-1400 psi. KRC offers a valve that goes to 1450 psi. I'm not sure if that is strictly for their pumps ,but it looks like it would fit the Saginaw style.
. I have looked at PSC and other than changing the valve I am not sure if it is any stronger in the casting itself. If this next pump doesn't work out I may fork over that $275 for one of their pumps.
This is the guide that I was using. I removed the three shims from my valve had and put one washer in it.

I may be spending a dollar to save a dime. LOL. Sometimes that happens. Time will tell.

 

This is the link where I found most of my information plus a couple of Utube videos (https://www.pirate4x4.com/threads/mo...evive.2712489/ ) .
These are my findings with said modifications of Cardone 96-8757:
Drilled orifice to 5/32
Removed all shims on relief valve (2)
These are my results in the video.
Video is too big.......bummer!
Idle pressure is 400 psi. A steady turn of the wheel on concrete in park at idle the pressure slowly rises until max pressure spikes briefly @1800 psi at full lock and then drops to 1650 to 1750.
Comments, questions, any help is welcomed. Can anyone tell me if this pump, steering box, etc...will last at these pressures or should I bring it down further?
TIA

 

Upload to YouTube then post a link here. I can upload to my channel for you to link to if you don’t have a YouTube channel.

 

Here are my tests.
I am using the 99-03 power steering bracket from Powertrain Integration and the Cardone 96-8757 power steering pump with the orifice drilled to 5/32. I have used two different pumps. The first one ended in cracking the internal casting. Originally this pump had 3 shims and it was hard to turn the wheels.

First Test (second pump)
Second pump was installed exactly the same way. One washer and no shims. The limiting stud was ground down by 1/8" for this test. Pressures were above 1900 psi barely turning the wheel so no more testing was done. I've already blown one pump let's not push it.
Second Test
Stock with no washer and no shims. Pressures were at 1650-1800. The 1800 psi would happen at full lock or hard pressure on the brake pedal.
​​​Third Test
Stock with (1) ten thousandths shim. Pressures dropped to 1400 psi. The max pressure seen here was a bounce to 1450 psi at full lock.
Fourth Test
Stock with (1) seven thousandths shim got the same results as Test 3.
Fifth and final Test
One #4 washer inside pressure relief valve at 32 thousandths and (2) shims totalling 27 thousandths were used. The equivalent should be a 5 thousandths shim. The shims were sourced from the two pumps that I have. The ground down limiting stud was used for this test. Steady lock to lock or heavy brake pressure at 1600 psi with a slight bounce to 1650 psi when full lock is hit.
Observations
At 1400 psi it was hard to turn the wheels.
Steering with one hand lock to lock on concrete at idle in park with 285/75/16 tires was achieved at 1600 psi. I believe and hope that the pump will have some longevity at the 1600 psi level. Fingers crossed and knock on wood.
Pressure gauge was sourced through O'Reilly auto parts rental tools. I attached the gauge at the top of the pressure line coming from the pump and the brake booster.
2002 F250 Blue Top Steering Box

Edit

 

Thanks FTN. Just decided to do it the long way. It's better this way anyway.

 

@DAWEST Do you have 99-03 steering gear installed?

 

Yes. Blue Top.

 

DAWEST- That's crazy the pump cracked like that. When I first installed and tested this we put it on a '99 with the stock steering box and 37's. The truck owner wanted "one pinky steering", shop modified the shims to run 1800 PSI and it was one pinky steering at idle on 37's. It really was too much though. You could tell the pump was working too hard, the steering motion was fast and jerky. They set the pressure down to 1600 iirc. It's been driving that way awhile now without issue so I think 1600ish is safe on the Saginaw, hoses and stock box if they're in good shape.

Got about 10 left out of the 40 made in the first batch. Going to get another run of them made before I run out. Anything at all you guys think I should change on the Saginaw mount? Hardware's good? Clamp supports the radiator hose well? Instructions are decent?

I am wondering about the Saginaw touching the battery box? It should have lots of room there. I'd love to see what was going on there if anyone has a link to where that was discussed. Maybe Ford changed the battery box in later years? If there's an interference I want to fix it or atleast let people know before they buy one and get a surprise.

Thanks!

-Dustin@PIP

 

@snuggletough clearance the bracket a little more in bottom of alternator area. My 6.0 alternator was hitting at the very bottom. I ground about 1/8 inch off alternator where a case bolt. Was and got the clearance needed.




Instructions were fine for me and all the hardware worked good.

The post about the dude having issues with battery box was on Facebook. I can try and copy the link and text it you you.

 

Yeah, if you find that Facebook discussion text it to me. no problem to give the alternator more clearance there. Thanks for letting me know!

 

Where ya been? I tagged you in the first post back in November. I realized the reason I can't link the FB post is bc it is a private group. Do you have FB? If so, join the 7.3L Powerstroke Nation group and then I can send you the exact link (to your email or text or to your FB account). I only know what I posted in the original post, which is what I copied from FB. It looks like the two guys above who have done the install, had to clearance in other areas, but not the battery box.

I still have NOT gotten around to installing my kit. Too busy with other projects.

 

Did you grind the alternator or the new Power Steering bracket?

 

I ground the alternator very slightly to get a gap since the bracket were already powder coated. Didn't need much at all. 1/8 inch is all. You can see I nthe Pic where it was touching and I just knocked a little off the alternator case there.

 

Mocked mine up tonight, can’t give any real advice other than the packaging was great and all hardware works and fits! Hoping to have the motor back in tomorrow and to get a feel for it soon.

So far an awesome product though and I can tell I’d already recommend this over a leaky weak stock ford reman POS.