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Post by slowpokerhino on Mar 6, 2007 19:38:30 GMT -5
I'm noticing a little vibration still with my Jeep but only at highway speeds (55+).
I am running a CV driveline & I adjusted the rear upper control arms to give a fairly straight driveline angle.
I haven't gotten an alignment yet so that may be the cause. Also, my transfer skid plate is kinda bent up in the middle which is pushing the transfer case up a bit. I plan on replacing my skid plates soon (especially since I had to completely remove the front - engine/oil pan - plate because it was so bent up it was rubbing on the front driveline once we added the lift.
Anything else I should check/try?
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Post by crawldit on Mar 6, 2007 21:37:49 GMT -5
The alignment sounds like the logical thing to me. My rig get's vibrations around 40 if the tires are out of balance and get's vibrations at 50+ if the alignment is out of whack. If that's not it then try adjusting the pinion angle some more. Are you going to replace the skid with a bellyup?
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Post by JEEP AMIGO on Mar 6, 2007 23:11:17 GMT -5
Keep putting miles on those bfg's (or any mud tire) and go 4wheel'n on them and that little vibration will get bigger!!!!!!!!!
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Post by I Am Batman on Mar 6, 2007 23:39:33 GMT -5
Keep putting miles on those bfg's (or any mud tire) and go 4wheel'n on them and that little vibration will get bigger!!!!!!!!! X2.. Also, if your pinion is pitched up at the case its gonna vibe. U joints seem to like a little angle on em. ALSO the oil pan skid plate rubs on every lifted TJ. And theyre gay so leave it off. ALSO get a damn alignment! Its so simple I could do it in my driveway so dont let anyone charge you more than $50 for it. Also theres a good chance the "alignment" wont be causing virations.. Its a jeep on big mud tires, so learn to live with it or you will be chasing little problems until you get fed up and sell it. |
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Post by slowpokerhino on Mar 7, 2007 22:10:49 GMT -5
The alignment sounds like the logical thing to me. My rig get's vibrations around 40 if the tires are out of balance and get's vibrations at 50+ if the alignment is out of whack. If that's not it then try adjusting the pinion angle some more. Are you going to replace the skid with a bellyup? Was gonna have it aligned today but my sliders came in so it'll have to wait until Friday or Saturday. Kyle drove it today & thinks it rides pretty good. Thinking of going with the Jeep medic skids. Doesn't a bellyup raise the transfer case therefore adding to the driveline angle? I like the idea of more clearance but don't know if it'd be worth it. |
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Post by I Am Batman on Mar 8, 2007 0:44:50 GMT -5
Its worth it. You can just pitch the pinion up a bit to make up for it.
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Post by slowpokerhino on Mar 8, 2007 19:45:59 GMT -5
Kyle,
Any idea what this guy is talking about? What is the tail shaft nut? I looked for it and don't think I have one. Checked all the bolts on the CV and everything is tight & the driveshaft doesn't seem to "slip back & forth" as he describes.
I have the same RE lift kit on my ’03 that you just installed and had the same problem. The shop that did the installation and RE themselves could not find the problem. The major problem ended up being that when they did the installation they did not torque down the tail shaft nut which allowed the new CV to slip back and forth. When torqued properly, they got better than another half turn out of the nut. And wha-la, the vibration went away.
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Post by crawldit on Mar 8, 2007 21:06:31 GMT -5
Its worth it. You can just pitch the pinion up a bit to make up for it. X2 2 more inches of clearance at the belly is worth it. You've already got the adjustable arms and driveshaft so redoing the pinion shouldn't be an issue. |
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2dollah
Frequent Wheelers 
Posts: 118
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Post by 2dollah on Mar 12, 2007 12:37:37 GMT -5
Kyle:
How do you do your alighnment? I clamp straight metal to my rotors and adjust so that it is toe-in by 1/8" if you measure the distance between the straight metal 3' in front of the axle and 3' behind the axle...or I just make it toe in by 1/8" measuring 5' in front of the axle. Either way has worked with good results.
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Post by I Am Batman on Mar 12, 2007 15:41:12 GMT -5
Kyle: How do you do your alighnment? I clamp straight metal to my rotors and adjust so that it is toe-in by 1/8" if you measure the distance between the straight metal 3' in front of the axle and 3' behind the axle...or I just make it toe in by 1/8" measuring 5' in front of the axle. Either way has worked with good results. Yes. |
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Post by slowpokerhino on Mar 19, 2007 16:31:09 GMT -5
Problem solved!! ;D
It was the damn skid plate, or should I say the fact that the bent skid plate had pushed the transfer case up about an inch & a half. Got a FREE used (but in almost new condition) skid from 4wheelers & presto!
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