dustyinthedirt Posted August 20, 2019 Share Posted August 20, 2019 Has anyone done it with a stock pump? How much fluid does a stock MJ pump move? Is it worth doing? The reason for wanting to revalving the pump is to flow more fluid. I am planning on running hydro assist and have already drilled and tapped my steering box. Link to comment Share on other sites More sharing options...
75sv1 Posted August 20, 2019 Share Posted August 20, 2019 Did you look at the WJ pump? It does a bit better than the stock XJ pump. I don't know what the Dakota has for a PS pump. Some of them are set up for a snow plow. Link to comment Share on other sites More sharing options...
Smokeyyank Posted August 20, 2019 Share Posted August 20, 2019 Don't revalve a stock XJ pump. Either WJ pump or an underdrive pulley. I'd also look at running a cooler and a in line filter. Link to comment Share on other sites More sharing options...
dustyinthedirt Posted August 20, 2019 Author Share Posted August 20, 2019 2 hours ago, Smokeyyank said: Do revalve a stock XJ pump. Either WJ pump or an underdrive pulley. I'd also look at running a cooler and a in line filter. I have a cooler with a inline filter attached to it. So does the wj pump push more fluid? 3 hours ago, 75sv1 said: Did you look at the WJ pump? It does a bit better than the stock XJ pump. I don't know what the Dakota has for a PS pump. Some of them are set up for a snow plow. I am headed to the junk yard this week and will see about the Dakota pumps. Is the bracketry the same? I work at a machine shop so I can machine a new mount Link to comment Share on other sites More sharing options...
75sv1 Posted August 20, 2019 Share Posted August 20, 2019 I looked at pictures of the Dakota pumps on Rock Auto. It looks different. Link to comment Share on other sites More sharing options...
Smokeyyank Posted August 20, 2019 Share Posted August 20, 2019 WJ does pump more fluid but you need to upgrade the steering gear to the Durango box as well. It's awesome upgrade, ran it on my XJ locked on 33's and it made a world of difference. It's fairly bolt on but you need to do a few things. -Need a bigger spacer on the gear as it will hit the unibody. -Need to tweek some of the brackets on the pump, tapping one or something (can't remember what I had to do but it's wasn't that difficult) -Keep the MJ pump fitting, the WJ fitting will not work properly. Link to comment Share on other sites More sharing options...
dustyinthedirt Posted August 20, 2019 Author Share Posted August 20, 2019 2 hours ago, 75sv1 said: I looked at pictures of the Dakota pumps on Rock Auto. It looks different. I have never thought of looking at them online... I feel rather dumb for that one Link to comment Share on other sites More sharing options...
dustyinthedirt Posted August 20, 2019 Author Share Posted August 20, 2019 2 hours ago, Smokeyyank said: WJ does pump more fluid but you need to upgrade the steering gear to the Durango box as well. It's awesome upgrade, ran it on my XJ locked on 33's and it made a world of difference. It's fairly bolt on but you need to do a few things. -Need a bigger spacer on the gear as it will hit the unibody. -Need to tweek some of the brackets on the pump, tapping one or something (can't remember what I had to do but it's wasn't that difficult) -Keep the MJ pump fitting, the WJ fitting will not work properly. Do you have to upgrade the steering box because of the fittings? Link to comment Share on other sites More sharing options...
75sv1 Posted August 21, 2019 Share Posted August 21, 2019 14 hours ago, dustyinthedirt said: Do you have to upgrade the steering box because of the fittings? I did not. There is the threading fitting that the pressure hose goes to. That needs swapped in from the MJ/XJ PS Pump, so the threaded fitting on the hose can match up. Since you will be using your original Gear Box, you don't need to do anything there. I think the Durango/Dakota box is a direct fit, except for the spacers from the frame as stated before. I think the '70s Corvette had hydraulic ram type steering. Link to comment Share on other sites More sharing options...
dustyinthedirt Posted August 21, 2019 Author Share Posted August 21, 2019 On the west Texas Offroad website their is a write up of how to make it flow more by drilling’s out the fitting. I have an extra stock pump that I am gonna try and do this to to see how much it helps. The write up also states that if you drill out the fitting to much you can blow the seals out of the box. thats nuts Link to comment Share on other sites More sharing options...
Smokeyyank Posted August 21, 2019 Share Posted August 21, 2019 16 hours ago, dustyinthedirt said: Do you have to upgrade the steering box because of the fittings? No, the whole purpose of doing the WJ pump is to get more flow for a bigger box, if your on a stock box it's really a moot point. If you want a little more umph when at lower speeds just go with the smaller under drive pulley. If you're planning to run a ram assist I'm guessing you're going 35s+. A stock box is only good for so much and if you're swapping tons, (guessing because of your sig) I would get a bigger box along with pump. It's a noticeable size difference between the stock box and the durango one. Link to comment Share on other sites More sharing options...
dustyinthedirt Posted August 21, 2019 Author Share Posted August 21, 2019 6 hours ago, Smokeyyank said: No, the whole purpose of doing the WJ pump is to get more flow for a bigger box, if your on a stock box it's really a moot point. If you want a little more umph when at lower speeds just go with the smaller under drive pulley. If you're planning to run a ram assist I'm guessing you're going 35s+. A stock box is only good for so much and if you're swapping tons, (guessing because of your sig) I would get a bigger box along with pump. It's a noticeable size difference between the stock box and the durango one. I am currently running 37s and I drilled tapped the box already with intentions to go to a bigger box later. I will look into the smaller pulley for sure. That’s a great idea Link to comment Share on other sites More sharing options...
Jeep Driver Posted August 21, 2019 Share Posted August 21, 2019 Smaller pulley = OVER driven. Larger pulley = UNDER driven. FWIW Also........just get a WJ pump, you'll be fine. Link to comment Share on other sites More sharing options...
MJPeabody88 Posted August 23, 2019 Share Posted August 23, 2019 Just replaced my pump w/reservoir (reman) and pulley. Removed my PS mount and brackets. Took a wire wheel to them and painted for a nice clean look. Haven’t lifted it yet. Don’t plan on doing any off roading to need better response. I would go for an aftermarket pump and mounts. Looked into it but I just want to get her rode ready so I can enjoy her for a bit before going all out on a build. Link to comment Share on other sites More sharing options...
DirtyComanche Posted August 23, 2019 Share Posted August 23, 2019 Ditch the filter. Dakota box makes zero sense with hydro assist. WJ pump is better... But don't buy a reman because it probably won't be the right pump. Link to comment Share on other sites More sharing options...
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