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Old 04-24-2017, 12:28 PM   #91
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Originally Posted by RichL35 View Post
Some have asked for some real world results with the box. I have some now to report.

The box is everything I had hoped it would be. To start with the install, one word.... Simple! It is heavy so I would recommend a friend to help or do what I did and just sling the box from above with either an engine hoist or chainfall. A couple quick height adjustments and it fell into place. Everything mounted up easily (don't forget to install the new included orings on your hoses) and you will need an 1 5/8 socket to torque the pitman arm nut. It purged the air out in a couple minutes and no leaks. Couldn't have been easier.
Now to drive it. It feels tight on road with less steering input required. Almost like finding an extra degree of caster. It has a noticeable increase in turning torque even driving slowly around the parking lot. My Jeep drove well before so based on the on road handling aspect of the PSC box it's nice but not enough of a difference that I would recommend installing one at that price for strictly the on road steering gains. Off road is a different story. Lower the 37 x 13.5 tires to 12lbs and lock up the front diff. Almost impossible to turn at a stop with the stock gearbox. I wanted a fresh measuring stick so I did this in a packed dirt parking lot out in front of my shop right before bringing the Jeep in to swap the box. After? Could totally turn the steering wheel with just a little bit of effort. You could hear the power steering pump load up a little but the wheel turns just fine. For how often I am doing that on the trails up here in the northeast it is completely acceptable. If I wheeled rock gardens all day I would recommend the hydro assist because at the end of a long day crawling in the rocks locked up your arms will be tired with the PSC HD Box. Doable but tired.

So the end result for me was great! I get a substantially stronger box with enough turning power for my aired down 37s that was really just an easy bolt in. On road steering is tight and improved over stock and I expect true offroad performance to be vastly improved. I will be taking a trip out to MaBell next weekend and look forward to the steering improvements that this box offers.

http://www.youtube.com/watch?v=k0JcHUOpp7g
Thanks for the information. I am hoping that it will be okay with 40's. I am going to 40's. My shop uses the regular steering box, and the run 40's, so I am hoping that this will be more than plenty.

when you go down to 12 psi, what kind of contact patch do you see? Is it double compared to normal air pressure?

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Old 04-24-2017, 12:57 PM   #92
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Thank you for the review @RichL35 , very helpful. Looking forward to hearing your opinion when you get back from MaBell.

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Old 04-24-2017, 01:45 PM   #93
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Awesome review Rich Thanks.



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Thanks. I wanted to just give an honest review. It's a lot of $$$ to spend and it's nice to know what to expect before you pull the trigger.
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Old 04-24-2017, 01:57 PM   #94
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Thanks for the information. I am hoping that it will be okay with 40's. I am going to 40's. My shop uses the regular steering box, and the run 40's, so I am hoping that this will be more than plenty.

when you go down to 12 psi, what kind of contact patch do you see? Is it double compared to normal air pressure?
I think PSC rates the box to handle 37s but really what does that mean. If someone is driving on 40s with a stock box this will be better. I know they are getting ready to release a ported version for hydro assist as well so that might be something to look at as well so you can add it if necessary in the future.

At 12psi I get nice bulges on the edge of the tire and the contact patch definitely increases. Doubles..? I'm not sure of that but the tread will wrap itself around football size rock at that pressure. I would like to drop another few PSI but I don't dare without bead locks.

Eric at Offroad Elements posted a video of one of the shop Jeeps with the box installed. It shows a set of 37s with the valve stems pulled (so your not going to get much more contact than that) and he demos a before and after install steering the Jeep.
https://www.offroadelements.com/blog...d-performance/
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Old 04-24-2017, 02:06 PM   #95
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Thank you for the review @RichL35 , very helpful. Looking forward to hearing your opinion when you get back from MaBell.
Will do.
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Old 04-24-2017, 02:35 PM   #96
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I think PSC rates the box to handle 37s but really what does that mean. If someone is driving on 40s with a stock box this will be better. I know they are getting ready to release a ported version for hydro assist as well so that might be something to look at as well so you can add it if necessary in the future.

At 12psi I get nice bulges on the edge of the tire and the contact patch definitely increases. Doubles..? I'm not sure of that but the tread will wrap itself around football size rock at that pressure. I would like to drop another few PSI but I don't dare without bead locks.

Eric at Offroad Elements posted a video of one of the shop Jeeps with the box installed. It shows a set of 37s with the valve stems pulled (so your not going to get much more contact than that) and he demos a before and after install steering the Jeep.
https://www.offroadelements.com/blog...d-performance/
Everything is supposedly getting installed this week, so no changes are in the works. My Jeep has already been sitting at the shop for 2 weeks waiting on parts, so I definitely don't want to slow them down any more. I think based on the video, your comments, and others. I think for what I plan on doing it should be okay.

I am going big, but I think my rig will be orders of magnitude more capable than whatever I will try to attempt.
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Old 04-24-2017, 02:44 PM   #97
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I am going big, but I think my rig will be orders of magnitude more capable than whatever I will try to attempt.
I bet it already is...
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Old 04-24-2017, 03:14 PM   #98
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Hopefully someone will let me know if this is off-topic. Does anyone have any experience with the AGR Steering Pros gear boxes or hydro-assist system?

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Old 04-24-2017, 03:26 PM
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Someone posted a not so good review about the box on JKO. Still awaiting a response. He was complaining of bump steer saying the new box sits 1.5 lower effecting the geometry.
I checked and the space between my SteerSmarts DL stud is exactly in the same place. So i dont know what happened with his.
Another complaint was track bar clearance which i agree with. Looks like he has a straight(er) track bar then mine. Mine dips down before the hoop. I have not tested it out yet to see if its going to be a issue.





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Old 04-24-2017, 07:13 PM   #100
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Someone posted a not so good review about the box on JKO. Still awaiting a response. He was complaining of bump steer saying the new box sits 1.5 lower effecting the geometry.
I checked and the space between my SteerSmarts DL stud is exactly in the same place. So i dont know what happened with his.
Another complaint was track bar clearance which i agree with. Looks like he has a straight(er) track bar then mine. Mine dips down before the hoop. I have not tested it out yet to see if its going to be a issue.
This sounds like it could be a problem being 1.5" lower. Problem in the sense of more work and expense if the track bar needs to be changed out as well. Ah, hidden costs that creep in.
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Old 04-24-2017, 09:38 PM
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This sounds like it could be a problem being 1.5" lower. Problem in the sense of more work and expense if the track bar needs to be changed out as well. Ah, hidden costs that creep in.

Hes all over the place with his responses so dont know. He runs what looks to be a straight track bar which is closer than mine.



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Old 04-24-2017, 10:01 PM   #102
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Hes all over the place with his responses so dont know. He runs what looks to be a straight track bar which is closer than mine.



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I run a synergy and it has a ton of clearance.
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Old 04-24-2017, 10:15 PM
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I run a synergy and it has a ton of clearance.


Picture?


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Old 04-24-2017, 10:16 PM   #104
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Hes all over the place with his responses so dont know. He runs what looks to be a straight track bar which is closer than mine.
He says he has the RK track bar same as I have. I just measured the clearance between the end of the sector shaft (OEM gear box) and track bar and it is slightly less the 1.5" If the sector shaft is truly lower by 1.5" I would not even be able to install the gear box. I also think there is something else going on with his setup that probably will never be fully explained. But, none the less, something to potentially be aware of and check into (for me at least).
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Old 04-25-2017, 06:30 AM   #105
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He says he has the RK track bar same as I have. I just measured the clearance between the end of the sector shaft (OEM gear box) and track bar and it is slightly less the 1.5" If the sector shaft is truly lower by 1.5" I would not even be able to install the gear box. I also think there is something else going on with his setup that probably will never be fully explained. But, none the less, something to potentially be aware of and check into (for me at least).

I have zero measurements to support my next statement so take it for what it is but I don't think the sector shaft could be 1.5" lower on the PSC or It wouldn't work with any trackbar. When I ran the stock box with the Synergy Sector shaft support I had to swap my aftermarket forged trackbar because it had clearence issues with the Synergy pitman arm nut and that was just 1/2 - 3/4" lower. I went to the Synergy track bar then to clear it. The PSC seems to have gained a little clearence back from that mod so (without actual measurements) I don't think it could possibly be 1.5" longer.
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Old 04-25-2017, 06:30 AM   #106
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I'll snap one for you.
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Old 04-25-2017, 08:06 AM
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I have zero measurements to support my next statement so take it for what it is but I don't think the sector shaft could be 1.5" lower on the PSC or It wouldn't work with any trackbar. When I ran the stock box with the Synergy Sector shaft support I had to swap my aftermarket forged trackbar because it had clearence issues with the Synergy pitman arm nut and that was just 1/2 - 3/4" lower. I went to the Synergy track bar then to clear it. The PSC seems to have gained a little clearence back from that mod so (without actual measurements) I don't think it could possibly be 1.5" longer.

Yea Synergys is made to clear their support. Man hope i can run the new Yeti track bar. Looks like i might have to go back to Synergy.


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Old 04-25-2017, 09:06 AM   #108
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Not the greatest photo but it shows the clearence between the Synergy track bar and sector shaft.
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Old 04-25-2017, 09:35 AM
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Not the greatest photo but it shows the clearence between the Synergy track bar and sector shaft.

Not bad heres mine Click image for larger version

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Old 04-25-2017, 10:40 AM   #110
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Based on these two pictures I would say that the XD box puts the end of the sector shaft pretty much in the OEM location.
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Old 04-25-2017, 11:55 AM
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Based on these two pictures I would say that the XD box puts the end of the sector shaft pretty much in the OEM location.

Agree


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Old 04-25-2017, 01:43 PM   #112
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Based on these two pictures I would say that the XD box puts the end of the sector shaft pretty much in the OEM location.
It appears too be very close to the original position.
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Old 04-25-2017, 02:18 PM   #113
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It appears too be very close to the original position.
Thanks Rich for the picture.
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Old 04-25-2017, 02:25 PM   #114
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It appears too be very close to the original position.
Making the shaft longer and altering it's orientation to the draglink would make no sense. Can't you guys just measure/compare it to the oem box?
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Old 04-25-2017, 02:51 PM   #115
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Making the shaft longer and altering it's orientation to the draglink would make no sense. Can't you guys just measure/compare it to the oem box?
Nope. I ported the box for hydro assist and gave it to a friend whose installing one. But I can tell you this. The position couldn't have changed much cuz I only had to adjust my drag length about a quarter turn to center to my steering again.
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Old 04-25-2017, 03:27 PM
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Like i said, my drag link stud was maybe 1/4 away from the frame. I looked when some people had it actually touch before SteerSmarts took it down.
Theres still 1/4 or so clearance there with the PSC box meaning the drag link IS in the same position.

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Old 04-25-2017, 04:07 PM   #117
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Like i said, my drag link stud was maybe 1/4 away from the frame. I looked when some people had it actually touch before SteerSmarts took it down.
Theres still 1/4 or so clearance there with the PSC box meaning the drag link IS in the same position.
I read the posts on JKO and got a little paranoid and kinda got the ball rolling over here. - My apologies for taking up post space. I am a design engineer so I constantly think about ways things can go wrong. But, I think that guy's info is wrong and/or setup is funky in some way.
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Old 04-26-2017, 10:22 AM
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I read the posts on JKO and got a little paranoid and kinda got the ball rolling over here. - My apologies for taking up post space. I am a design engineer so I constantly think about ways things can go wrong. But, I think that guy's info is wrong and/or setup is funky in some way.

Turns out he mixed up his parts. So yes the sector shaft is lower, but its not the drag link that is the issue. Only the track bar. By putting his drag link under the knuckle he created bump steer


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Old 04-30-2017, 06:26 PM   #119
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Thank you for the review @RichL35 , very helpful. Looking forward to hearing your opinion when you get back from MaBell.
MaBell trip today! My review in post 89 stands. This box worked AWESOME all locked up in the rocks. The box had plenty of turning power even with my 37 x 13.5 Mud Grapplers at 10 psi. This is now one of my favorite mods. To warn you, my list of favorite mods is pretty long.. haha
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Old 04-30-2017, 07:34 PM   #120
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Think I am finally sold. Thanks Rich. Will put it on the list for summer mods. I have a big backlog of Jeep projects and summer is the off-season for me wheeling and camping in Arizona. -Too damn hot.
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