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Starchild

This has been a work in progress for a while now, but it's finally moving again. My steering range was the main issue from my initial SAS setup that needed work. Since the Passport is a dedicated trail rig these days, I opted for a budget full hydro setup. I ended up trading my bent trailer axles for an orbital valve salvaged from a tractor. I added a stub steering shaft and a home made mounting bracket to get to this

I managed to find a steering shaft that matched the 27-spline Isuzu steering shaft, but the diameter was a little too large. I ended up grinding down the OD of the shaft and the ID of the steering shaft to make things work. Since this compromised the integrity of the spline connection, I cross drilled and bolted the connection, and ran a weld around for insurance. I went ahead and cut the stock steering shaft between the u-joint and the slip joint to make the work easier, not to mention the shaft had to be shortened an inch or two.

To reconnect the steering shaft, I beveled and butt welded the ends of the shaft, and added a clam shell with rosette welds.

I'm still using the stock PS pump, so I had to adapt the stock pressure line. The banjo fitting at the PS pump is a metric fitting that my local hydraulic shop couldn't match, so they cut off the end of the stock line and braised it onto a standard hose fitting.

I used the stock reservoir, since it has a decent volume, and ran the return line through a transmission cooler and spin on filter mounted in front of the radiator.

I just used basic hose clamps and transmission line for this setup between the orbital and reservoir. The stock supply line from the reservoir to the pump was reused.

I picked up an 8", 2"-dia. single ended, unbalanced agricultural style ram witch worked perfectly.

I used some D-ring mounts from Blue Torch Fab that worked perfectly to mount the ram between the tie rod and the new mount

The mount is 1.5"x.25 DOM tube, which I plated with 3/16. The ribs on the back are 1.5x.25

Everything mounted up

I finally got the system bled and took it for a test drive today and it works surprisingly well. I had it up to 35-40, and it felt very solid. It has a very different feel than a normal setup, and I was overcorrecting badly at first. I also noticed that if I turned the wheel too fast, the pump couldn't keep up, and seemed to cavitate, but for my purposes it's fine.

One of the things that convinced me to go this route is that I could more comfortably run a front auto locker rather than an ARB, so I installed a lock right in the front axle while I had the truck down Twisted Evil

I hope to get it out for some testing next weekend and I can't wait Mr. Green

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1994 Trooper - Delightfully close to stock

anubis · Mud King Joined: 06 Aug 2006 Posts: 556 Location: Richmond

Wouldnt it have been just as easy to make it a hydo assist setup. I didnt follow this earlier but I am very interested.

Good work, I would have thought that you would have run it directly to your high steer arm instead of to your tierod to increase strength. Seems like full hydro will bend that rod if you get it in a binding spot on the trail.
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02 honda passport, SAS done, 36's,
cab to be removed and replaced with a 53 ford f100

for sale:
98-02 front fenders (black)
passneger turn signal and rear tail light
driver headlight, turn signal, rear tail light
Both mirrors
rear view mirror
dash trim

Tad · Posted: Sun Jan 13, 2008 10:57 am Post subject:

Interesting setup. Do you know how much this cost you vs. the cost of a hydro-assist?

-Tad
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2001 Trooper - 4.77s, 3xARB, OME 919HD springs. 255x85 Maxxis Bighorn MTs
1999 Rodeo - rebuilt DD
1980 300GD
2000 Suburban
2000 E320

Starchild · Posted: Sun Jan 13, 2008 11:58 am Post subject:

bigpoppax2 · Posted: Sun Jan 13, 2008 5:18 pm Post subject:

Good job Andre. I'm sure the full hydro will serve you well on your truck.

Nice job, fab work is very sharp. How about some lock to lock pis (or shall I say, end of the ram to the end of the ram)

Joe
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After concealed carry guy shot a gun wielding robber....."I'm just a Law abiding citizen dumping some chlorine into the gene pool"

98 RodeoPort 34" LTB's, Supercharged and some other cool stuff.

gearhead313 · Newbie Joined: 10 Jan 2008 Posts: 44 Location: Butler, PA

Was the lock to lock the only problem with the stock steering on teh SAS? I am planning my SAS now and hoped that the low steer on my waggy 44 would let it turn acceptible for daily driving.

Otherwise, I like how yours came out. Its always seemed tough to get the orbital to come out clean without re-engineering the wheel!
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1986 Diesel Trooper

...smell the fumes

squatch · Posted: Sun Jan 13, 2008 9:52 pm Post subject:

Nice job Andre. Looks like you got everything way up out of harms way. TSC is a truck builders best friend. Thanks for pointing out that this is a trail rig. Prob not street legal in most states but cool on the rocks. Is this just like 1/4 turn of the wheel now each way? As in turn a little and hold till the front catches up?
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Starchild · Posted: Sun Jan 13, 2008 10:17 pm Post subject:

bigpoppax2 · Posted: Sun Jan 13, 2008 10:35 pm Post subject:

That looks like it worked out perfect. Very good range.

Joe
_________________
After concealed carry guy shot a gun wielding robber....."I'm just a Law abiding citizen dumping some chlorine into the gene pool"

98 RodeoPort 34" LTB's, Supercharged and some other cool stuff.

Starchild · Posted: Sun Jan 13, 2008 10:56 pm Post subject:

my93rodeo · Posted: Mon Jan 14, 2008 12:15 am Post subject:

Awesome very well done
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93 rodeo,2.6 5 speed, 2wd
Sold the rodeo
87 2.3 trooper with a 2.6 cam, weber carb, electric fans, aisin manuals, and 31s

Bansil · Posted: Mon Jan 14, 2008 7:44 am Post subject:

Very cool and glad to see no mailboxes or neighbors animals stuck in the grill and bumper,good job Cool

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gearhead313 · Newbie Joined: 10 Jan 2008 Posts: 44 Location: Butler, PA

Thanks for the info. now get some footage wheeling that pig!!
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1986 Diesel Trooper

...smell the fumes

Starchild · Posted: Mon Jan 14, 2008 5:12 pm Post subject:

I'm going testing on Sunday Cool

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1994 Trooper - Delightfully close to stock

Starchild · Posted: Mon Jan 21, 2008 10:36 am Post subject:

I finally got the chance to really put this system to the test. This is from a build/test day on our clubs obstacle course yesterday.

http://video.google.com/videoplay?docid=-4154877821419992878

There is some footage of me doing my best Joe Darlington impression Wink

The steering worked great! And it's really nice to have all four wheels turning. I got hung on my cross member on the second obstacle, and ended up backing down. I tried it again later, and ended up shearing my front drivers side center pin and spitting out the degree shim.

Rodeo Guy came down for a while to check out some Florida wheeling. This is when we finally convinced someone to check the depth on the mud hole. We talked him into it by telling him to back in Laughing

http://video.google.com/videoplay?docid=-633383334270559828

We had a bunch of rain this week, and they had recently dug out the hole and loosened up the bottom. That truck is on 42's.
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1994 Trooper - Delightfully close to stock

bigpoppax2 · Posted: Mon Jan 21, 2008 10:59 am Post subject:

Looks like everything is working well. I doubt too many small diameter tired trucks attempted those obstacles.

Joe
_________________
After concealed carry guy shot a gun wielding robber....."I'm just a Law abiding citizen dumping some chlorine into the gene pool"

98 RodeoPort 34" LTB's, Supercharged and some other cool stuff.

Starchild · Posted: Mon Jan 21, 2008 11:08 am Post subject: