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For now I would just add the oem rear bar and see what you think. Reevaluate the front bar after you have tested things out a bit. I have an oem rear bar I was going to put on in the next few weeks. I only have about 1” of lift on 6100 bilsteins. Not sure about the end links for 2” of lift but...

The oem rear sway bar is 17 mm diameter. if increased front articulation is the goal and still having some lateral sway resistance on the road. Then having a reasonably sized rear bar and decreasing the front bar diameter is beneficial. Oem front bar is 1 3/8” diameter. Many aftermarket front...

It must feel good seeing it all come together and ready to test out. Enjoy the hard work you guys, or should I say wife, put in.

Not surprised that the dialed in damping is better now. All the extra unsprung weight should be accounted for. Good for RK to get that worked out. They really seem top notch. How do the rear springs (400/500) feel on the road? Compared with your previous full portal setup?

I don’t have a good number for the oem spring rates. I have never seen them published.

How much lift do I need to clear 37s?

A while back, I did some basic calculations on the sway bar forces generated at the link ends. Sway bar is basically a torsional spring connecting opposite wheels (left-right). As wheel displacements differ (articulation from one wheel moving up and other moving down), the sway bar produces a...

OEM 4 door is in the 225 lbs/in range. The standard kings max out at about 225. They start at about 170 so reaching static equilibrium at ride height results in significant spring displacement. They are initially very soft. the fact that you didn’t get too much squat when fully loaded with the...

Are you loaded up with weight, overlanding stuff? 400 lbs/in on the rear seems real high. Accutune has some king spring specs on their web site. Not sure if that is still good info. They rear seems to be progressive caping out at 225 but starting lowish at 167. That is probably what is...

I have 6100 bilsteins. They are pretty much the same as eibachs. I am on lowest setting to keep my CG down, <2 inch lift. No need for new front UCA to get back to oem alignment. Or rear track bar modifications. I suggest you just do the shocks and see how it is. If you are wanting to be near...

This. You are leaving some available jounce on the table when just bolting on portals. First two plots show the SAS IFS kinematics. Just under 10” of wheel travel and about 1” metal fender clearance for 35s. The previous portal rig was similar to this. He had RK shocks with slightly better...

That’s so cool. Watched that video over and over again. The angle on the shock looks great. Seems like you guys nailed the shock tower design. Looks slightly more vertical than oem? Any thoughts?

I am gonna start selling tie rod sleeves made from aerospace aluminum… yeah, you know.. for the rear sway bar.

I think you are all full of sht. 7” drop bracket for the win. I just wish 74weld made a kit. With their precision machining and aerospace aluminum (pretty sure it is as good as vibranium) they could make a 15” kit. I would slap on 50s then. No rub, vertical fender/tire clearance is all that...

Current setup compared with OEM. oem MR ~1.1-1.15, say 1.125 is good Current MR 1.33 (1.33/1.125)=1.18 (1.125/1.33)^2=0.72 18% more wheel travel 18% increased coilover loading 72% decreased wheel spring rate 85% decreased fundamental harmonic frequency Oem has about 7.5” of shock travel and...

Yes. Absolutely. inverse of MR squared as you have defined it. Approximate math not counting for nuance in coilover angles follows. The displacement at wheel is displacement at shock times motion ratio. So easy to measure “real” motion ratio in your rig with no springs on coilover. Get wheel...

I updated my post about torsion bar. @SierraBronco noticed my goof. Had the stiffness change backwards wrt trailing arm location. That dude has big arms and a big brain. Where do I sign up for some of that.

my brain is having a hard time envisioning how the full motion of the rear axle looks with that upper configuration. 🤣 make sure you get some good video of that, especially with all the travel you will see. and a note to myself. Don’t post any video on this thread with my tiny ass arms in it.

This build is really starting to come together. The anti-sway bar is tucked away nicely. I like it. EDITED: for accuracy. Had some comments backwards. if you move the end link location at the torsion bar arm closer to the torsion bar then you get less leverage and the bar will effectively be...

Absolutely. It is highly unfortunate that an undercurrent of low-life bronco modifying individuals exists on this forum. Sssoooo, can I at least do official OEM recalls? Do they count as modifications? Now I am all confused. Maybe I will just stop driving it all together… Paralysis sets in…