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Unread 12-01-2001, 07:00 PM   #1
JACKED
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Blowin out u joints once a week!!! HELP....

OK dont know what going on. Its been lifted for about 3yrs with no probs and all of a sudden a couple of weeks ago I broke the bolt that holds the straps for the U joint to the rear yoke. Used easy out to get broken bolt out and just replaced rear u-joint and put new bolts and straps, well just broke again. 3rd time in a month and I havent even taken it off rode once this month. is there a way I can jump up to a heavier duty yoke that will hold bigger straps and like a 5/8th bolts. and maybe some heavier duty u joint? well will replace with new stock u joints till can figure some ideas out. thanx for any help!

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Unread 12-01-2001, 07:05 PM   #2
evilpsych
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well you can convert from the straps to U-Bolts.. there's a how-to somewhere out there on the net.. i suggest you get your driveshaft balanced.. you may have installed it incorrectly, i.e. out of balance.
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Awwwwwwwwwwww... So he wants to go OFF-ROAD does he????

'93 YJ, 4.0, K&N filter, Borla Header, Borla Cat-Back, Hi-Flo Cat, 3 Core Radiator, D-Rings, TruckNuts, MSD 6A, LockRite Locker in D30, Magnecors, Kickass Stereo, 1" daystar, 31" BFG AT's, Homemade Rocker Guards and Front/Rear air-tank bumpers with tire carrier, 15x8 AR-767 4"BS, BDS 3.5 HD lift, AMA A/C Kit, York OBA, GoFerIt 1" MML, 8,000lb HF/MM Winch, Magellan MAP 330 GPS, PRO-2067 500ch. Scanner, oh, and a CB capable of talking to SATURN!

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Unread 12-01-2001, 07:06 PM   #3
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oh.. have you considering a double cardan or CV driveshaft? perhaps your drivetrain angle is too high
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Awwwwwwwwwwww... So he wants to go OFF-ROAD does he????

'93 YJ, 4.0, K&N filter, Borla Header, Borla Cat-Back, Hi-Flo Cat, 3 Core Radiator, D-Rings, TruckNuts, MSD 6A, LockRite Locker in D30, Magnecors, Kickass Stereo, 1" daystar, 31" BFG AT's, Homemade Rocker Guards and Front/Rear air-tank bumpers with tire carrier, 15x8 AR-767 4"BS, BDS 3.5 HD lift, AMA A/C Kit, York OBA, GoFerIt 1" MML, 8,000lb HF/MM Winch, Magellan MAP 330 GPS, PRO-2067 500ch. Scanner, oh, and a CB capable of talking to SATURN!

"The Only Thing Necessary for Evil to Succeed is for Good Men to Do Nothing." - Edmund Burke
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Unread 12-01-2001, 07:10 PM   #4
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I have a t- case lowering kit, and its been lifted for about 3yrs with NO PROBS so I dont think its the drive angle, but could definatly need to be balanced. thanx!
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Unread 12-01-2001, 07:15 PM   #5
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Also never heard of a double cardan, could u explain.
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Unread 12-01-2001, 08:26 PM   #6
Darko
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All us jeepers hate to hear this, but maybe you installed it wrong. Did you install the lift 3 years ago, or did somebody else do it.
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Unread 12-02-2001, 12:58 AM   #7
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I'd suspect a bad yoke. When you blow out a joint, it commonly damages the yoke. Since it wasn't a problem before, and it's recurring, that would be my first guess.

Oh, one more possibility. You're running a Dana 35 I presume? The tubes can sometimes spin. Look at the diff very carefully. See if one of the holes in the rear shows a wear spot that looks like a 1/4 moon. Another way to tell is look at your perches. Are they both perfectly parallel?

I had the tubes spin on my Dana 35. Had to weld them to the pumpkin. It's a pretty common failure on SOAs actually. It's probably actually due to 33" tires. But it used to be you'd only see YJs with 33s on SOAs.
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Unread 12-02-2001, 09:14 AM   #8
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I am going to work on it today and ill post everything I find out. oh had a shop called Rigs put in the lift kit, they specialize in lifted trucks but mostly Jeeps. OH how can I tell if the Yoke is bad. IT looks fine after visual inspection, but Im NOT a mechanic.
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Unread 12-02-2001, 01:06 PM   #9
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The cap should fit perfectly. Zero slop.
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Unread 12-02-2001, 01:57 PM   #10
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huh? what cap?
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Unread 12-02-2001, 02:27 PM   #11
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Yeah Osborn, the rear yoke is JUNK. were the U joint sits inside the yoke the metal is just all chewed up. so guess ill need a new yoke and while thats being replaced Ill have the drive shaft balanced and front and rear U-joints replaced. Is there such a thing as a heavier duty U joint or a way to beef that up alittle so this won't happen again, if there is can someone link me too a site where I can buy some. Thanx everyone exspecially OSBORN!
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Unread 12-02-2001, 06:04 PM   #12
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Yeah, you can beef up that joint. Buy new yokes for a larger sized u-joint. Get new yokes for the pinion and the driveshaft. I really don't know for sure if a 1310 yoke is available for the Dana 35, but I'd guess that it is. Getting a 1310 fitted onto your tcase would be a little tougher I'd guess. But, when it comes to Jeep mods, anything can be done.
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Unread 12-03-2001, 06:42 AM   #13
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Thanx everyone again u were all very helpfull!
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Unread 12-03-2001, 06:54 AM   #14
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If I was going to have to go to that much trouble and expense, I think I'd just go with a new shaft with a double cardan.
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