Quadralift lowering/leveling/lifting Links DIY - Jeep Garage - Jeep Forum

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Old 10-12-2015, 10:06 PM
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Quadralift lowering/leveling/lifting Links DIY

So I finally ordered the parts to make my own adjustable air links. The Adjustable Air Ride links were just too expensive to stomach, so I figured I'd make my own. I also didn't want to tear apart the stock links, and nobody seemed to be able to find the stock links for sale anywhere. So DIY it is!

Tools needed: hack saw, ruler, pliers/vice grips, 8mm wrench for jam nuts

The balls where the links attach on the Jeep are 8mm, so you need ends to fit, then threaded rod to join them and make it adjustable. Grainger turned out to have everything I needed. You can get threaded rod anywhere, but it was just as easy to order it online with the link ends.

Ball sockets (p/n 6UDU1):
http://www.grainger.com/product/BANS...5-Thread-6UDU1

Threaded rod - M5 (p/n 21YP35)
GRAINGER APPROVED Threaded Rod,316 SS,M5-0.80x1 M - Threaded Rods - 21YP35|57491 - Grainger Industrial Supply

The ball sockets already come with jam nuts to go on the 5mm threaded rod. Pull the balls out of the socket and toss em or put them aside. Cut the threaded rod to whatever length you want after threading the jam nuts on. Thread on the ball sockets and you have adjustable links. To lower the rear end and level it out with the front, make the rear links 3.25" long (stock is 3.5").

Basically I made two leveling links to bring the rear of the jeep down for $50 shipped. Took me 15 minutes to figure out a good length, cut two pieces of threaded rod, and tighten the links up. If I wanted to make links for the front, I just order 4 more ball sockets and use the rest of the threaded rod.

My plan for the winter is to put the stock links back on the rear, then cut longer pieces of threaded rod so I can put these links on the front to raise it slightly and level it out the opposite way. Gives me a tad higher ride height for the snow or whatever.

I forgot to take a pic of the links before install, but here's what it looks like on the jeep:



PS: Don't forget to lower the headlight beams a bit to compensate for changing the angle of the jeep. Since I lowered the rear end, it brought the headlight cutoff up quite a bit. Enough for me to get flashed multiple times on the way home. Easy vertical adjustment on the headlights fixed that problem.

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Old 10-12-2015, 10:58 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

How's the quality of ride? Any errors?
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Old 10-12-2015, 11:06 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

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How's the quality of ride? Any errors?
I only used the links to drop the rear maybe 3/4 - 1", so it's even or just barely higher than the front (still need to take pics). Drove probably 75-100 miles today and noticed no difference in regular mode or sport. Ride feels normal, no noticeable change in the rear at all. No warnings or errors from the computer.

Now to decide if I want to install spacers or drop some dough on SRT reps...
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Old 10-12-2015, 11:07 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

Definitely want to see some pics!
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Old 10-12-2015, 11:09 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

keep in mind playing with the ride heights effects the wheel alignment hugely, one of the reasons its required to set alignments in sport mode.
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Old 10-13-2015, 09:15 AM
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Re: Quadralift lowering/leveling/lifting Links DIY

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Definitely want to see some pics!
Check out some of the quadralift adjustment threads in the suspension forum, lots of people have posted pics of lowered or leveled Jeeps. I'll still get some when I can, since I don't think there were any lowered Summits.

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keep in mind playing with the ride heights effects the wheel alignment hugely, one of the reasons its required to set alignments in sport mode.
I highly doubt the rear suspension is affected much by ride height. Camber for sure, but the change is very minimal when dropping less than an inch. I'll keep an eye out for abnormal tire wear, as usual with any suspension modification, but not expecting any.

As for the front end, the Jeep is made to drive in OR1 so if I raised it, it would still be well within spec. I doubt Jeep has extreme toe changes due to ride height on a car with adjustable suspension.
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Old 10-13-2015, 04:10 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

Mate your choice on the front rest assured there is a huge difference in the front between settings. Mine has been fuked during its first alignment at the wrong height. Ask yourself why would jeep bring out notification to make sure the vehicle is in sport mode.
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Old 10-13-2015, 04:57 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

Hey can you show me where you adj the headlights? I get flashes like crazy. Lol
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Old 10-13-2015, 10:49 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

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Hey can you show me where you adj the headlights? I get flashes like crazy. Lol
Under the hood, behind/above each headlight is a hole in the plastic cladding. Shine a light down there and you'll see a phillips head screw. You'll need a long screwdriver to reach it. I can't quite remember which way to turn for down, but you only have two choices I don't think it takes much of a turn to lower them pretty good.

(most cars have vertical headlight adjustment with this same method, just look for the screw in the gap behind the headlights)
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Old 10-13-2015, 11:22 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

Thanks dcorn.


Also on the alignment issue.. The lower you go the more negative camber you have. Toe etc stays the same. I had alignment done after lowering my jgc with the links. Pretty much can't adj the camber if you are lowered. I was stuck with -1.7 rear and -1.4 fronts.

And yes its was aligned in sport mode( aligment mode on settings screen)
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Old 10-14-2015, 10:03 PM
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Re: Quadralift lowering/leveling/lifting Links DIY

Great job dcorn! I was thinking about lowering the rear of my Summit to level it. I appreciate the write-up.
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Old 10-23-2015, 07:46 AM
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Re: Quadralift lowering/leveling/lifting Links DIY

Howiestt is correct. There is barely enough room for camber/caster adjustment on our WK2's. It's not uncommon for me NOT to be able to set the rear to preferred specs even on a stock WK2. The front generally can be adjusted right where it should be with only a tiny bit of room to spare. By lowering just 1 inch, you pretty much blow your chances of having a desirable camber/caster measurement in the end.

On some instances, I have elongated the adjustment slots on the lower control arms to achieve a more preferred spec, but again, there is still very little room to work with if the vehicle has been lowered. Option B would require the use of longer or shorter control arms depending on if you raised or lowered the vehicle.
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