What was the tb grinding against in the front OKC?

 

wasn't grinding on anything was just the front drive shaft vibe issue..basically when you add a lift you shift that front axle towards the drivers side so not only does the shaft angle up and down change but you also add to the funky angle by shifting that axle towards the drivers side..Could have been something with the u-joint as well..That's the best I can figure cause that noise stopped and now I just get some slight vibes not that grinding vibe..I just don't know specifically what the exact issue was just how it stopped for me..Not to mention it road way better..

 

Guess I never heard that b/c everytime I have ever done a lift it got new u-joints at the same time. Felt that the stress of the new angle on driveline components deserved it.

 

Likely is a smart idea to replace all the drive shaft u-joints..I hadn't considered that...New angles can definitely put some stress on old u-joints..This may sound funny but I haven't replaced a u-joint in years...I swear this jeep is making me refresh myself on my wrenching skills..lol That's next on my lift....cause I have a feeling my u-joints are pretty darn old...

 

Ok this weekend I helped a guy from school install an RE kit just like mine on a 92 XJ and guess what same grinding noises I had. Today we got the trackbar installed uhg I didn't think the stock one was going to come free even with a pickle fork..just needed some convincing.. Anyways after installing the track bar that love grinding vibe noise magically went away...So 98cherokeesport get a track bar soon.. Two jeeps same t-case same issue after lift install and both fixed with installing a track bar..

 

i will definitely have to think about the track bar. i need tires first and i will install my tcase drop kit then contomplate purchasing one.

 

I wouldn't contemplate it it..any lift over 2" needs to have the front axle re-centered...It's bad on the tires, suspension and steering not to..Not really something to consider rather something to add as a priority and honestly should be apart of any lift over 2"...Anyways just my 2 cents worth..

 

doesnt an alignment do the same thing?

 

Without an adjustable trackbar you can not re-center the axle. It is geometrically impossible.

 

but i redrilled the hole for the stock track bar. the lift kit instructions told me to.

 

It's more than likely your rear driveshaft angles. I have never heard of vibrations related to axle shift until i read this thread so that's new to me. My guess on that kind of situation is that when your axle is shifted over 2" or so, it's being "pulled on" and the tightness of this would transfer axle vibrations more than it would if it were centered with less force on it. If your trackbar was moved by re-drilling then rule that out as the culprit.

 

thanks for the reassurance muddeprived. I figured that the lift instructions would cover everything and i guess they did. when i get the tc drop kit i will see if there are any more vibrations.

 

I was under the impression that the RE 3.5" kit came with a trackbar? I'm surprised the instructions say to re-drill the hole over some.

 

well i bought the Superride kit. i believe that the superflex kit comes with the adjustable track bar. is it a shock that it said to redrill the hole? it is the first lift i have ever done so i thought it was normal.

 

That weakens the trackbar mount and should be considered if the rocks are not your use for the vehicle. The weakened mount will standup to trail use and mus OK but the rocks cause alot more stress on components.