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4x4x2 Install with frame reinforcement plate

Seattle66

Full Member
Joined
Dec 4, 2012
Messages
223
I am almost done with the installation of the my 4x4x2 powering steering setup. All I need to do is mount the pump and hook up all the lines. It should all be done tomorrow and I will post a final update.

I went with the full kit from BC Broncos and the BC Broncos frame reinforcement kit. Overall the install hasn't been too bad, but definitely not a simple bolt on!

The hardest part of the entire the process so far was removing the old frame spacers and grinding the fitting the new heavier duty spacers that come with the reinforcement plate kit. There was no way I could do it with my bumper on, so I had to remove my front bumper, which was welded in multiple spots by the PO. Once the bumper was off, I had to use a real heavy steel bar, elbow grease, and collection of swear words to knock out the original spacers. Since the bottom of the frame is a piece that fits into the top and side sections, there is a lip that sticks up and runs along the bottom edges inside the frame. You have to grind a notch into the new spacers in order to get them to line up.

Unfortunately the reinforcement plate needed some cutting and fitting as well. This was because my dual shock hanger was in the way and the plate would not fit. It was easy enough to trim the plate and then drill the two additional mounting holes in the frame since the 4x4x2 box only uses one of the existing mounting holes. The other issue I ran into was that the upper mounting hole ended up being so close to the cross member that I could not get a nut on the bolt. Therefore I had to grind one flat edge of the bolt head down. This is why the box is mounted with the nuts out. The first hole lined up perfectly with the existing hole and the reinforcement plate holes lined up perfectly with the box, so I have no idea why my cross member was in the way. The cross member looks to be factory without any modifications. Trying to lay nice welds on the reinforcement plate can be difficult do to limited space. We just laid them a little heavy and then grind them down so they look nicer :)

Please ignore the bad paint job on the box and frame plate in the pictures. I cleaned everything up and only painted the areas that were not accessible when the box was mounted. Once I am done, I will go back and paint everything else properly. I am using a Black Rust-Oleum paint.

Here are some pics:
 

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chuck

Bronco Guru
Joined
Aug 14, 2001
Messages
6,474
Loc.
Ingram, Texas
Good write up, a couple of things. I make the tubes a little long so they can be notched to fit, the frames tend to very a little. Also Ford did not consider that I would design the reinforcement kit 40 years later so they were not real precise about placing the crossmember. But on the other hand if they had made the spacers correctly we wouldn't need the kit.
 

Chief Master Sergeant

Retired U.S. Air Force
Joined
Nov 6, 2002
Messages
5,216
Good write up. I did this conversion on both my Broncos and love it. I ended up cutting a small notch out of the corner of that cross member to give me a straight shot through the plate, box and frame. This is a great upgrade!
 

iwlbcnu

Bronco Guru
Joined
Nov 1, 2001
Messages
3,342
Sounds like you got lucky, I had to notch my cross member as over 1/2 of the nut was inside it. I also drilled 3/16 holes in the frame to allow to spot weld my spacers in place. It def wasn't as easy as I had thought it to be, but glad I did it.
 

Mark

Contributor
Bronco Klutz
Joined
Aug 29, 2003
Messages
5,414
Loc.
NW Indiana
very nice!
I added a 1/4" plate on the other side of the frame as well on mine.
That b!+c# ain't moving.. EVER
 

chuzie

Bronco Guru
Joined
Jul 21, 2006
Messages
2,701
I welded a length of flat stock to the spacers to make it easier to check the fitment. Easy in / easy out, grind, repeat, weld.
 
OP
OP
Seattle66

Seattle66

Full Member
Joined
Dec 4, 2012
Messages
223
Got the pump hooked up along with a cooler. Went through the bleeding cycle. Filled the pump with fluid, lifted the front wheels off the ground and turned the wheels from full lock to full lock about 40 times until there were little to no bubbles in the fluid. Got a good arm work out. Added more power steering fluid along the way as needed. Fired up the engine and let it idle for a couple minutes while turning the wheels back and forth again holding it at full lock each way for a couple seconds. Then drove it around the block and did a couple u turns. Rechecked the fluid and had to add a little more.

Overall things went well and it steers like a dream now. Will get some pics of the pump, the cooler, and the lines up within the next couple days. Now I just need to save up to replace my 33's with 35's :)
 
OP
OP
Seattle66

Seattle66

Full Member
Joined
Dec 4, 2012
Messages
223
Just adding some pics of the pump and the cooler for reference.
 

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