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Old 03-11-2011, 10:37 AM   #1
GroundHawg's Avatar
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I might have broke another universal

Alright, so the other day I was at a gas station checking fluids and stuff and I noticed some oil near my driver's side front tire. I swiped my finger across it, looked red, so I assumed it was trans fluid (I blew a line a few weeks ago) that I missed during clean up. The Jeep also got wheeled yesterday (I'm loving all this muddy rain ) everything seemed good.

This morning I drove my girlfriend to work because of all the snow we got last night. When I got back home, I started backing my Jeep up the driveway, in 4hi, tires cut. POP! I'm all "oh great, WTF now?!" I kept going and all was quiet. "ok lets try this again" I thought to myself. After playing around, I can only get it to pop in reverse, under load, in 4wd, and it's not consistent. By the way, the pavement is slick enough. It's impossible to get up my driveway straight in 2wd.

I then remembered that oil I saw. Driver side had oil near the tire, sounds like the pop is coming from the driver side tire too...

I'm thinking axle u-joint from that mud. I just replaced that same one last summer. My Jeep is frozen outside right now or I'd pull my diff plug and see if I'm losing oil. I could've swore it smelled like tranny fluid though. I can't even get under her with all this snow.

Ok I'm babbling if this joint took a crap on me AGAIN, what stronger replacement joints u folks loving? I know I should get shafts, but cash is tight. I just replaced my trans lines, got a windshield installed Tuesday, and I'm taking care of my uninsured mother temporarily. So…stronger joints

Also, and I can't believe I don't know this can I drive this thing around a lot with a jacked up u-joint if I avoid 4wd? My last one I replaced about 20 miles after I broke it, and I've always seen them get replaced quickly. I don't know if freewheeling my front axle will screw the yoke up or not. Under load in 4wd...you bet. But street cruising in 2wd? I don't know.

Axle is a bone stock front JK Dana 30 holding up 35's, unlocked. The joint I busted once already was replaced with a stock one.

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Old 03-11-2011, 03:31 PM   #2
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Ok so I checked it out in the snow and cold. The u-joints are going out again. I guess I'll run em till they start clicking

Question is though...what can I upgrade these to?

I'm almost positive Spicer 760's don't fit JK D30's. The shafts seem ok so I'm not willing to upgrade them. This Jeep loves eating these joints though. I don't want those $200 CV ones either. I may as well just buy chromo's then.

I don't know what to do

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Old 03-11-2011, 03:36 PM   #3
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You are buying Spicer brand joints arent you?
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Old 03-11-2011, 03:45 PM   #4
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Yeah I busted the stock ones last summer, and replaced them with 297's I think they were. 5 months later, they failed again.

I'd like a stronger one if possible. I know TJ D30's get that Spicer 760, but I'm almost sure those don't work on JK D30's.

Everything is holding up nicely in my front axle. C's are straight, shafts look good, tube looks nice..just these axle u-joints are starting to p*ss me off and I can't find out what ppl are upgrading to
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Old 03-11-2011, 05:41 PM   #5
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Alright screw it. I bought another set of stock u-joints. Hopefully they'll last till I can get chromo shafts. Seems to be the only way to go.

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Old 03-11-2011, 09:55 PM   #6
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Why are they wearing out so fast? Is it the large tires on the Dana30?
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Old 03-11-2011, 10:20 PM   #7
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I'm not sure. The first one flat out exploded. This one is slowly failing.

I think I'm getting water or mud or something inside and it's burning them up. I don't know lol

The first was my fault romping the gas pedal. But I didn't really do anything this time. Couple mud runs, played in the snow a lot, now the joint has movement. Damn cap flung off, got wet I guess. That's the best I can come up with.

I could weld the caps on but if I screw those up I'll need new shafts.

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