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05-01-2012, 05:48 AM
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Member
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Join Date: Feb 10, 2011
Location: Houston, TX
Posts: 119
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About to Piece Together Hydro Assist
I've got a 79 Cherokee that will be running HMMWV 37" Radials and will be a weekend cruiser, mild trail and camping rig.
Before I tore into it, the steering pump was squealing up a storm, so I definitely plan to replace it.
I'd like to go ahead and go with hydro assist from the start. I had a setup on a Chevy on one tons and loved it.
I've been searching around, but I haven't found exactly what I'm looking for.
I've got a low mileage steering box off an 85 CJ10(same as Waggy, J10) that I could drill and tap. Or should I go ahead and get a J20 box and drill and tap it?
Should I just go with a stock J20 steering pump?
And should I get newer O-ring pump and box, or stay with the older style on both?
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05-01-2012, 06:33 AM
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FSJ Maniac
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Join Date: Jul 05, 2006
Location: Houston, Texas
Posts: 2,979
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New style j20 box is my vote. Get a stock pump and see how it does. If its not up to par, do the west texas mods to the piston. If that still isnt enough, psc pump and call it a day. I dont think you will have any problems with the stock pump though.
__________________
" Kaiser" - 1981 J20 113" WB - 360 w/ hei/727/208-d44hd front aussie/d60 rear welded - CS144/Taurus fan/flatbed and roll bar
Future mods - 6.0l chevy, hp60, 14-bolt, NWF Black Box/NP205, 5.13's, SOA, 42's 
Build Thread
Fight Crime...Shoot Back.
Texas FSJA!
ΜΟΛΩΝ ΛΑΒΕ
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05-01-2012, 08:13 PM
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Member
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Join Date: Feb 10, 2011
Location: Houston, TX
Posts: 119
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Is a J20 pump better than J10/Cherokee pump?
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05-01-2012, 08:18 PM
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Grease Monkey
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Join Date: Jan 11, 2003
Location: Kansas City, MO
Posts: 367
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It is bigger.
Post with a picture by Tad:
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05-01-2012, 08:23 PM
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Member
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Join Date: Feb 10, 2011
Location: Houston, TX
Posts: 119
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I know about the boxes.
I'm talking about the pumps.
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05-01-2012, 08:45 PM
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FSJ Maniac
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Join Date: Aug 08, 2010
Location: Maryland/ Williamsport, PA
Posts: 2,951
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Pretty sure all the pumps were the same. Maybe bigger valve or something.
__________________
Austin
1991 Hunter Green Grand Wagoneer
5.9 2bbl-727-NP229-TFI-30x9.5 Firestone M/T's-Brush Guard-tire mount
SOON: 4350 and cast iron intake
Others:
-1994 Baby Grand
-2000 XJ cherokee on Tons
-1953 REO M35A2 6x6
-1955 Willys Pickup
Quote:
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Originally Posted by rustywagoneers_com
i am not an addict, i can stop anytime.
i dont have a problem, you people have the problem.
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05-01-2012, 10:51 PM
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Bleedin' Gasoline
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Join Date: Dec 22, 2005
Location: longmont, colorado
Posts: 2,132
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I think the PS pumps for FSJ's are all the same, minus the fittings.
I'm running a '78 J20 box on my wagggy and J10. Both are tapped, but I'm running plugs in the waggy (plans for future assist). The J10 has a 1.5" x 8" PSC ram. Work great. Could use a little better pump, but it's fine.
Here are some good pics I took of where to properly tap the boxes.
Drilled and tapped the J20 box with a 7/16th drill bit and a 1/4" NPT tap.
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05-02-2012, 05:28 AM
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Member
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Join Date: Feb 10, 2011
Location: Houston, TX
Posts: 119
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Is there any benefit of picking up a post 79 pump and gear box?
Or should I just go with the older style?
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05-02-2012, 06:01 AM
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Grease Monkey
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Join Date: Jan 11, 2003
Location: Kansas City, MO
Posts: 367
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Quote:
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Originally Posted by TAWL_BOY
I know about the boxes.
I'm talking about the pumps.
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Duh, what I get for late night posting. |
05-02-2012, 08:37 AM
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FSJ Maniac
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Join Date: Jul 05, 2006
Location: Houston, Texas
Posts: 2,979
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Quote:
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Originally Posted by TAWL_BOY
Is there any benefit of picking up a post 79 pump and gear box?
Or should I just go with the older style?
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Only difference is new boxes are o-ring fittings while old are flare fittings. Personal preference really.
__________________
" Kaiser" - 1981 J20 113" WB - 360 w/ hei/727/208-d44hd front aussie/d60 rear welded - CS144/Taurus fan/flatbed and roll bar
Future mods - 6.0l chevy, hp60, 14-bolt, NWF Black Box/NP205, 5.13's, SOA, 42's
Build Thread
Fight Crime...Shoot Back.
Texas FSJA!
ΜΟΛΩΝ ΛΑΒΕ
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