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New BDS Upper Control Arms Squeak?

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I just had new BDS UCA installed with a set if 8112s and the UCAs are squeaking (at least I think that it is them). You can hear it with just the slightest pushing down on the front bumper. Is this normal? I only have about 65 miles on them, so maybe they need a break-in or something? I do not believe the bushings are greasable, but the ball joints appear to have been greased. TIA
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I may have already fixed this. I sprayed the bushings last night with WD-40 Specialist Silicone and this morning when I went out and pushed up and down on the front bumper there was no squeaks. Hopefully that is all I needed to do. Only time will tell. It could be that the parts were colder and contracted a bit, so it might come right back. 🤞
 

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BDS uses a uni-ball joint not a traditional ball joint. They will squeak. Yes, they don't now because you sprayed it with WD40, keep that can handy, once that wears off it will squeak again. It is the nature of the beast.

Technically you should use a dry graphite lube. A "dry" lube does not "collect" dust/dirt, the enemy of a uni-ball.

Ford Bronco New BDS Upper Control Arms Squeak? 1781749344425-4f
 

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Agree. The oem UCAs are maintenance free and can get alignment dialed in for 1-2 inch lift. Not sure I would change out the UCA when running 8112s, don’t see an advantage. UCA ball joint angles are not a limiter for these, since kinematics should stay close to oem design parameters regardless.
 
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BDS uses a uni-ball joint not a traditional ball joint. They will squeak. Yes, they don't now because you sprayed it with WD40, keep that can handy, once that wears off it will squeak again. It is the nature of the beast.

Technically you should use a dry graphite lube. A "dry" lube does not "collect" dust/dirt, the enemy of a uni-ball.

1781749344425-4f.webp
I actually got the BDS arms that have a ball joint for just that reason and easier maintenance of course at the expense of some performance. I didn't use normal WD-40, I used their silicon formula that acks like a dry lube and is safe on rubber. I'v been using silicone spray for years on door seals and such so I figured it wouldn't hurt. You are correct however, it might be a temporary fix. Didn't drive it today, but I did jump on the bumper some more and still not squeaking. I also read the instructions and the bushings do not call for lube on install.
 

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Agree. The oem UCAs are maintenance free and can get alignment dialed in for 1-2 inch lift. Not sure I would change out the UCA when running 8112s, don’t see an advantage. UCA ball joint angles are not a limiter for these, since kinematics should stay close to oem design parameters regardless.
I almost didn't, but since it was apart, I decided to just do it. Also, if I remember correctly, the Bilstein instructions stated that they needed to be replaced. Had I not done that, the installer/alignment shop would have an excuse. I didn't want that. At least I got the BDS type that are closer to stock when it comes to maintenance.
 
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Agree. The oem UCAs are maintenance free and can get alignment dialed in for 1-2 inch lift. Not sure I would change out the UCA when running 8112s, don’t see an advantage. UCA ball joint angles are not a limiter for these, since kinematics should stay close to oem design parameters regardless.
Actually just re-read the instructions UCA only recommended if lifting over 2.5". So at least they look a little bit cooler if nothing else.
 

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I actually got the BDS arms that have a ball joint for just that reason and easier maintenance of course at the expense of some performance. I didn't use normal WD-40, I used their silicon formula that acks like a dry lube and is safe on rubber. I'v been using silicone spray for years on door seals and such so I figured it wouldn't hurt. You are correct however, it might be a temporary fix. Didn't drive it today, but I did jump on the bumper some more and still not squeaking. I also read the instructions and the bushings do not call for lube on install.

Most people do not know that info is why I posted. Good call on the "ball joint" arms. I'm surprised they are squeaking. That was the whole point as to why BDS gives you the option. Uni-balls for the hard core (dont care about the noise) and ball joints for everyday people (want them quiet).
 

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The 8112s have <6” of travel in the front and have an extended length of 23.4”. Squarely within OEM kinematic design parameters. See plot. They are position sensitive to provide serious hardcore damping as shock piston velocities and displacements increase while offering more mild and manageable shock response for minimal displacements near ride height. They are purposefully designed near oem kinematics for a ride height (shock equilibrium) near mid stroke with a mild lift (1” or so). This is probably ideal for 35s and high speed higher displacement shock response.

I just don’t see any advantage to running after market UCAs with these, perhaps only some maintenance disadvantages. Unless you really want to minimize control arm displacements by going from flexible bushings to steel on steel joints. Of course that comes with maintenance. UCA ball joint angles can never be a problem with these or a reason for new UCAs.

Ford Bronco New BDS Upper Control Arms Squeak? IMG_7600


Ford Bronco New BDS Upper Control Arms Squeak? IMG_7601


Ford Bronco New BDS Upper Control Arms Squeak? IMG_7709
 
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Most people do not know that info is why I posted. Good call on the "ball joint" arms. I'm surprised they are squeaking. That was the whole point as to why BDS gives you the option. Uni-balls for the hard core (dont care about the noise) and ball joints for everyday people (want them quiet).
I think it was squeaking on the passenger side rear bushing only. I don't think it was the ball joint. I put the silicone spray on that spot only and it went away. I was looking at a picture of a replacement bushing, I can see that there might have been a bit of extra rubber from moulding that could come in contact with the frame and cause the squeaking. It most likely would have worn away in a bit more time.
 

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The 8112s have <6” of travel in the front and have an extended length of 23.4”. Squarely within OEM kinematic design parameters. See plot. They are position sensitive to provide serious hardcore damping as shock piston velocities and displacements increase while offering more mild and manageable shock response for minimal displacements near ride height. They are purposefully designed near oem kinematics for a ride height (shock equilibrium) near mid stroke with a mild lift (1” or so). This is probably ideal for 35s and high speed higher displacement shock response.

I just don’t see any advantage to running after market UCAs with these, perhaps only some maintenance disadvantages. Unless you really want to minimize control arm displacements by going from flexible bushings to steel on steel joints. Of course that comes with maintenance. UCA ball joint angles can never be a problem with these or a reason for new UCAs.

IMG_7600.webp


IMG_7601.webp


IMG_7709.webp
Everything thing you say is probably correct, however I didn't buy the shocks from the installer. I might have but they didn't have Bilstein as an option on their website. So I thought I would throw them a bone and get the UCAs from them. I'm pretty sure that they have some advantages over the stock, but still not necessary. The ones I got are fully rebuildable, and seem to have all the same attributes of the stock ones. I would think with the stock ones I would be getting to the edge of spec, but with these I'm assuming I'm more in the the middle. There are plenty of people on this site that are running the 8112s with aftermarket UCAs, but when I asked the question if they were necessary, they, like you, said "No". I have the squeaking under control now, so I'm good with them. Not going back. Thanks for the responses.
 

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Not being negative here. Just passing on information. Lots of people change UCAs like my wife changes shoes. I just don’t see much of a technical reason when running the 8112s. Unless you want the displacement control of heim style joints.

I do like the 8112 setup with 35s. And yeah, nothing wrong with some bling to add flair.
 

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Most people do not know that info is why I posted. Good call on the "ball joint" arms. I'm surprised they are squeaking. That was the whole point as to why BDS gives you the option. Uni-balls for the hard core (dont care about the noise) and ball joints for everyday people (want them quiet).
Yeah I'm about to get rid of my BDS uppers because I can't stand the uni-balls anymore. Living in Illinois and driving it year round, even constantly trying to keep them clean and add the PTFE dry lube, they just continue to rust out super bad. Just cant keep the salt and shit out of them. Tired of the noise lol
 
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Not being negative here. Just passing on information. Lots of people change UCAs like my wife changes shoes. I just don’t see much of a technical reason when running the 8112s. Unless you want the displacement control of heim style joints.

I do like the 8112 setup with 35s. And yeah, nothing wrong with some bling to add flair.
Didn't feel any negativity. I appreciate the discussion. It will help others make an informed decision.
 
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Yeah I'm about to get rid of my BDS uppers because I can't stand the uni-balls anymore. Living in Illinois and driving it year round, even constantly trying to keep them clean and add the PTFE dry lube, they just continue to rust out super bad. Just cant keep the salt and shit out of them. Tired of the noise lol
Yes, although rust isn't as much of an issue where I'm at, I wanted something with less maintenance. I'm definitely not extreme enough for uni-balls. I went with the BDS primarily because they are a known company and from my understanding are owned by Fox. They were available. I have no brand loyalty to BDS, this is the first product that I have from them. They really aren't that special as you can see from the photos.
Ford Bronco New BDS Upper Control Arms Squeak? 1781788871526-gd

Ford Bronco New BDS Upper Control Arms Squeak? 1781788942129-w2

Ford Bronco New BDS Upper Control Arms Squeak? 1781789335105-hq
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