JKOwners Forum banner

1 - 20 of 36 Posts

·
Administrator
Joined
·
8,742 Posts
Discussion Starter #1 (Edited)
Well I blew my power steering out yesterday (doing doghnuts.. doh!)
I have no power steering at idle whatsoever but works fine when I get the RPM's up. Fluid seems to have come out of the pump area but there is still plenty in the reservoir.

None the less, something is broke. :mr-t:

Instead of replacing whatever is broken with factory parts, isn't there a hydro-assist, Redneck Ram, that was designed to work with the JK.. was it PSC ?? Or am I remembering something different? Was it Screaming Lizzard Customs that did one on a JK?

Any way.. you thoughts keeping in mind I will be eventually running 40's.
 

·
Broker by the Minute
Joined
·
3,825 Posts
You will need to replace the factory unit no matter what.... unless you switch to full hydro steering which is technically illegal on the road.

Hydro assist, is just that, an assist to the factory power steering.

Phil (there may be others, I just know this one for sure) has a hydro assist which will help drive those 4ds. But I'd wonder how up to snuff the factory D44 is to that size of tire and weight.

I run Hydro assist on the Isuzu and it makes a HUGE difference! But it also makes it easy to rip things off too. ;)
 

·
Registered
Joined
·
419 Posts
Im looking at doing the same thing. Its all a matter of if you can tap into your steering box or not. My "guy" says about $650 if its doable.
 

·
Administrator
Joined
·
8,742 Posts
Discussion Starter #4
You will need to replace the factory unit no matter what.... unless you switch to full hydro steering which is technically illegal on the road.

Hydro assist, is just that, an assist to the factory power steering.

Phil (there may be others, I just know this one for sure) has a hydro assist which will help drive those 4ds. But I'd wonder how up to snuff the factory D44 is to that size of tire and weight.

I run Hydro assist on the Isuzu and it makes a HUGE difference! But it also makes it easy to rip things off too. ;)

Why I bought the Rock Jock 60. ;)

Why would full hydro be illegal?

Thoughts on this...
http://westtexasoffroad.homestead.com/hydrosteering.html
 

·
Broker by the Minute
Joined
·
3,825 Posts
Why full hydro isn't legal on the road...

Typically and this is in general speaking terms, a full hydro system isn't

A) relational and variable in input vs output. ie your factory power steering provides a "feel" for the road and applies turning power variably depending on speed.

B) doesn't return to center, meaning if you let go of the wheel the wheel does not "automatically" return to driving straight. This could be catastrophic in the event you can not input to the steering wheel and the vehicle continues on the course of your last input.

C) if your hydro system fails, you have NO WAY to control your vehicle.

Ram Assist or Hydro Assist, does just that, assist the application of power to the input you or the RTC is providing to the steering system. ;)

Now a full hydro with backups and RTC and variable ratio is legal and is in fact on several very large on road commercial vehicles.
 

·
Administrator
Joined
·
8,742 Posts
Discussion Starter #9
Why full hydro isn't legal on the road...

Typically and this is in general speaking terms, a full hydro system isn't

A) relational and variable in input vs output. ie your factory power steering provides a "feel" for the road and applies turning power variably depending on speed.

B) doesn't return to center, meaning if you let go of the wheel the wheel does not "automatically" return to driving straight. This could be catastrophic in the event you can not input to the steering wheel and the vehicle continues on the course of your last input.

C) if your hydro system fails, you have NO WAY to control your vehicle.

Ram Assist or Hydro Assist, does just that, assist the application of power to the input you or the RTC is providing to the steering system. ;)

Now a full hydro with backups and RTC and variable ratio is legal and is in fact on several very large on road commercial vehicles.
Ok, now that I have seen a couple kits I am clear... thanks. None of the ones I am looking at are full hydro.

:smokin:
 

·
Registered
Joined
·
5,199 Posts
That is what I have, a stage II kit. Works great and Matt at West Texas Offroad knows his stuff. The factory pump seems to work just fine with it, but I am going to add a small cooler and if I can find space a filter.

Driving on the freeway is great, it acts as like a real high pressure stabilizer. Haven't done much off-road yet, but will give it a good workout in a couple of weeks.

As is pretty normal with this kind of setup, steering is a little slower than normal and if you want to move the wheels quickly it will take a little more force than usual, but it is not really noticeable.

When off-road I think it is also remembering that just because you can turn the wheels, you may not want to. The ram will often prove to be stronger than your tie rod ends. A good rule of thumb is that if you need more than one hand on the wheel, then it is most probably too much.
 

·
Super Moderator
Joined
·
15,337 Posts

·
Registered
Joined
·
5,199 Posts
Why full hydro isn't legal on the road...
I haven't researched this much, but just a little digging shows that it may be very similar to the situation regarding bead locks. A lot of speculation and not much concrete proof. I maybe wrong, but I don't believe there is any Federal law regarding using full hydro on the roads, so any laws are likely to be State specific. A lot of heavy plant that travels on the highways is full hydro.

That said, I personally like having a mechanical link for highway use, although in reality that can fail just as easily as full hydro can.
 

·
Administrator
Joined
·
8,742 Posts
Discussion Starter #13
Thanks Phil!

I guess I am going to have to figure just what it is I broke so I know which way to go and that will have to wait until tomorrow when I De-Mud RubiKong.
 

·
Broker by the Minute
Joined
·
3,825 Posts
I haven't researched this much, but just a little digging shows that it may be very similar to the situation regarding bead locks. A lot of speculation and not much concrete proof. I maybe wrong, but I don't believe there is any Federal law regarding using full hydro on the roads, so any laws are likely to be State specific. A lot of heavy plant that travels on the highways is full hydro.

That said, I personally like having a mechanical link for highway use, although in reality that can fail just as easily as full hydro can.
I agree Phil. I also provided a comment that some very large commercial vehicles also are full hydro. ;)

Nonetheless, a mechanical connection is less likely to fail verses a hydro connection that a simple leak could take out. ;)

But if there is any laws it would probably come under the RTC and feedback portion that is lost on full hydro.

I considered a full hydro on the Isuzu but the costs of another redundant back up system is cost prohibitive.

And the final note: If you get involved in an accident with a full hydro system, I'd imagine that would create a field day for the opposing legal team.
 

·
Registered
Joined
·
5,199 Posts
Nonetheless, a mechanical connection is less likely to fail verses a hydro connection that a simple leak could take out. ;)
Try driving a JK with a leak in a PS hose, no PS makes it nigh on impossible to steer, at least with 37's.


And the final note: If you get involved in an accident with a full hydro system, I'd imagine that would create a field day for the opposing legal team.
Without a doubt, that is why you should always carry a shovel ;)
 

·
Registered
Joined
·
313 Posts
That is what I have, a stage II kit. Works great and Matt at West Texas Offroad knows his stuff. The factory pump seems to work just fine with it, but I am going to add a small cooler and if I can find space a filter.
Phil, did you get the 1.5" or 1.75" ram? What size tires are you running. Did you do the power steering pump mods that West Texas does to increase hydraulic pressure and volume? I have concerns about the stock system and the West Texas setup seems to the biggest bang for the buck. The PSC system looks great too but it's mighty pricey. I plan on adding a cooler too.
 

·
Registered
Joined
·
5,199 Posts
Phil, did you get the 1.5" or 1.75" ram?
1.5"

What size tires are you running.
37's. I was planning on going to 40's, but I've decided to stick with 37's for now.

Did you do the power steering pump mods that West Texas does to increase hydraulic pressure and volume?
West Texas Offroad did it and got it setup very nicely.

I plan on adding a cooler too.
I added a small cooler, which drops the fluid temp by 15°.

On the street it works great, very happy with it. Off-road it is excellent, being able to turn the wheels and put them exactly where I want them is a big plus. Extremely happy with off-road performance.

For the money, I think the West Texas Offroad offer a great kit.
 

·
Registered
Joined
·
313 Posts
1.5"

37's. I was planning on going to 40's, but I've decided to stick with 37's for now.

West Texas Offroad did it and got it setup very nicely.

I added a small cooler, which drops the fluid temp by 15°.

On the street it works great, very happy with it. Off-road it is excellent, being able to turn the wheels and put them exactly where I want them is a big plus. Extremely happy with off-road performance.

For the money, I think the West Texas Offroad offer a great kit.
Thanks for the info. There have been times off road that I was worried about shearing my steering box sector shaft. A local off road store has been had several JK's shear the shaft and has been installing the PSC unit which includes a new steering box. The West Texas stage II kit looks like it will prevent the problem - at an affordable price.

My tie rod should be up to it as I've got the Rock Krawler HD Tie Rod. Do you think it's a good idea to replace the drag link with either the Poly Performance or RK unit?
 
1 - 20 of 36 Posts
Top