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Old 10-27-2019, 10:04 AM
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4th set of ball joints blown

2015 2dr JK 3.5 inch lift. 15 inch American Outlaw deputy wheels, 35 inch tires. I'm about to install my 5th set of ball joints in t years. My current teraflex ones only lasted a year and 4 months. I've been through stock, 2 sets of synergy and the teraflex ones. I'm getting new teraflex ones on warranty but I'm probably going to have to install new ones in a year again. I was really hoping the teraflex ones would be better. The flowers are adjustable but the uppers aren't. Is there something else that could be off putting more stress on my balm joints?

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Old 10-27-2019, 10:07 AM
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Sorry for the horrible auto correct

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Old 10-27-2019, 10:12 AM   #3
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Have you checked the alignment? Are you burning up more tires than average?
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Old 10-27-2019, 10:40 AM   #4
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That is excessive for sure. At that rate I wouldn’t bother with expensive ball joints. Moog ball joints have a good warranty program. You’d likely not have to pay for another ball joint again.


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Old 10-27-2019, 10:41 AM
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I had it aligned right after I installed new ball joints, tie rod and drank link about a year and half ago. Its probably time to get it checked. Would adding a top mount drag link help with the wear on the ball joints?

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Old 10-27-2019, 10:44 AM   #6
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Did you do the work yourself or did a garage do the work?

Have you ever had to replace the unit bearings?
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Old 10-27-2019, 11:13 AM
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The first 2 times a shop did the work. I installed the teraflex ones myself. I'll recheck my hubs for play but I checked not to long ago and they were still tight.

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Old 10-27-2019, 11:41 AM   #8
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What tires and tire pressure are you running? How many miles are we talking about? What kind of roads are you running on? Washboard dirt roads will are hard on everything.

High load range tires and or high tire pressure will knock the crap out of suspension components. I have about 50,000 miles on mine with load range D 35s and Load range E 37s and the factory ball joints are still in it and ok. I also run only 28 to 25 psi in the front and 2-3 psi less in the rear.
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Old 10-27-2019, 12:38 PM   #9
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Did you do the work yourself or did a garage do the work?

Have you ever had to replace the unit bearings?
^^^ this ^^^

If you’re determining bad ball joints by rocking wheel and tire when off the ground, you could definitely be looking at a bad hub bearing...
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Old 10-27-2019, 02:53 PM   #10
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Have you tried Dana Spicers? OEM and cheap.
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Old 10-27-2019, 02:58 PM
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What tires and tire pressure are you running? How many miles are we talking about? What kind of roads are you running on? Washboard dirt roads will are hard on everything.



High load range tires and or high tire pressure will knock the crap out of suspension components. I have about 50,000 miles on mine with load range D 35s and Load range E 37s and the factory ball joints are still in it and ok. I also run only 28 to 25 psi in the front and 2-3 psi less in the rear.
I run 28 psi. It's been about 20k Km and when I go up north there is always washboard rutted roads. Even around where I live we have some pretty good potholes. Yesterday I was driving home from a wedding at night and took the back roads, was driving around 70km hr fairly smooth then all of a sudden there was a patch of potholes and I hit them pretty hard. It was hard to see. So there has been a few instances like that in the last year.

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Old 10-27-2019, 02:59 PM   #12
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Also you may wish to concider pulling the unit bearing and hub together when replacing ball joints (if you have not been doing so). Unnecessarily pulling hub of the axle can put undone strain on it. If you are running CVs you may not have that as an option.
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Old 10-27-2019, 03:02 PM
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Also you may wish to concider pulling the unit bearing and hub together when replacing ball joints (if you have not been doing so). Unnecessarily pulling hub of the axle can put undone strain on it. If you are running CVs you may not have that as an option.
Ya I pulled the entire assembly on the axle shaft when i did it. I didn't remove the hub from the axle.

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Old 10-27-2019, 03:06 PM   #14
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Ya I pulled the entire assembly on the axle shaft when i did it. I didn't remove the hub from the axle.

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Sounds good. Other on the forum believe it is necessary for some reason. I just replaced my Ball Joints yesterday. I went with Dana Spicer and hope to get 30-35 k out of 'em. 2.5" lift with 35's (Nitto Trails on AEV Savegre wheels). This is my first replacement set.
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Old 10-27-2019, 03:19 PM   #15
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Take a look at the RareParts ball joints. I have had nothing but good to say about them.
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Old 10-27-2019, 05:06 PM   #16
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Take a look at the RareParts ball joints. I have had nothing but good to say about them.
Expensive AF, but it will be the last time you get ball joints.
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Old 10-27-2019, 10:48 PM   #17
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Which Teraflex version went bad, the old or new version?
Could you no longer adjust the preload?
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Old 10-28-2019, 01:10 AM   #18
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Expensive AF, but it will be the last time you get ball joints.

And that's my point, cheaper than replacing them four times with inferior products.
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Old 10-28-2019, 03:30 PM   #19
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Go with Dynatrac's. I have a couple of friends that went with Rare Parts and both of them had them replaced within a week of being installed. Both sets were bad out of the box, Both had excessive vertical movement. That lifetime warranty won't cover them either unless they actually break, wearing out isn't covered and that's up to Rare Parts to inspect and determine if they are covered.

Anyone I know (around Raleigh/Durham) that are not on stock ball joints are running Dynatrac's.
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Old 10-30-2019, 01:09 PM
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I jacked up my jeep and checked for play in my wheel bearings. There doesn't seem to be any but there is a slight grinding noise when spinning the wheel on both front wheels is that a sign I should switch out the hubs? 150k km.

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Old 10-30-2019, 01:38 PM   #21
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It could be. Make sure the noise isn't from the brake pads (you can spread the pads off the disc).
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Old 10-30-2019, 03:43 PM
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It could be. Make sure the noise isn't from the brake pads (you can spread the pads off the disc).
Could be, I still have stock front pads. I just ordered some raybestos for the front. Still wondering if I should order some bearings if I'm doing ball joints again.

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Old 10-30-2019, 04:02 PM   #23
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Could be, I still have stock front pads. I just ordered some raybestos for the front. Still wondering if I should order some bearings if I'm doing ball joints again.

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I replaced mine because I was replacing some other stuff (including upgrading to bigger brakes and new axles). They weren't bad, as far as I know. But they are around $100 each and I would rather spend that while I am in there than have to go back in later. If you are going through ball joints, well, most of the forces going to the ball joints go through those bearings to get to the ball joints. And going through that many ball joints isn't normal in my opinion. Something is going on.

I have heard of Synergy ball joints failing early. Not so much with the TF ball joints. Ours are still going strong after a year and a half on 37s. Maybe try Dynatrac ProSteers.
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Old 10-30-2019, 04:10 PM   #24
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If you replace the unit bearings (and you might need to) Rock Auto has Timken bearings for about $116 each.
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Old 10-30-2019, 05:01 PM
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If you replace the unit bearings (and you might need to) Rock Auto has Timken bearings for about $116 each.
Just grabbed them from rock auto. $390 canadian shipped. Monkey wrench.ca had them for $575 for 2 timkins so I saved a bunch!

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Old 10-31-2019, 02:28 PM   #26
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are you determining that the bjs are bad, or is a shop determining for you? do you trust the shop?

if you haven't already, try KNURLED ball joints. the carriage hole for your ball joints, on your Cs may be wallowed by nanometers and causing the whole assembly to slip, wobble, or vibrate separately from the C as a whole.

if the knurled bjs don't fix the problem, then you have other suspension problems that are causing the symptoms you see. how much of an offset are you running, rims or spacers? do you do alot of crawling?

i run ALLOY US, just changed last year, 17inch rims, no offset, 35s, E Range.
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Old 11-01-2019, 02:19 PM   #27
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Do you run The Hammers as your DD? You are way out of normal.

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