Sep 21, 2015, 02:17 PM
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- Jeep Grand Cherokee ZJ 1993 to 1998 Tires General Information and Specs
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Member
Joined: Nov 2013
Posts: 110
Likes: 0
From: Anchorage
Year: 2000
Model: Cherokee
Engine: 4.0 inline 6
No shims until you do a SYE.
Interesting that the 4WD makes it worse, a lift with stock control arms actually helps pinion angle in the front (worsens caster, of course). Maybe your front DS is unbalanced, as in a weight fell off.. If you are actually at 3" I wouldn't say that an SYE is necessary; however, every situation is different, and and SYE certainly is never a bad idea.
Interesting that the 4WD makes it worse, a lift with stock control arms actually helps pinion angle in the front (worsens caster, of course). Maybe your front DS is unbalanced, as in a weight fell off.. If you are actually at 3" I wouldn't say that an SYE is necessary; however, every situation is different, and and SYE certainly is never a bad idea.
CF Veteran
Joined: Oct 2012
Posts: 2,314
Likes: 3
From: Canton, GA
Year: 1996
Model: Cherokee
Engine: 4.0
But that's just hearsay.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
IIRC they do. Something that spins that fast can be imperfectly made. Having them balanced helps that. I could be wrong but to my understanding they do.
Moderator of Jeeps
Joined: Jul 2011
Posts: 21,029
Likes: 3
From: Frederick, MD from Cleveland, OH
Year: 1993 YJ Wrangler
Engine: 4.0 I6
CF Veteran
Joined: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
Yep. I had to get a stock rear driveshaft after doing my 4x4 conversion because the one I had was too long. Long story short it has a dent/ bend in it and at about 60-70 mph that sucker is humming away and shaking things up. It's a harmonic kind of thing, same thing happens when it's " normally" out of balance.
Junior Member
Joined: Sep 2011
Posts: 32
Likes: 0
From: Port Angeles, WA
Model: Cherokee
goin bigger
ok so currently i have a rc 4.5 lift on my jeep and i did a 8.8 swap and made a bastard pack for the rear and now the back sits higher.so i want to go a little higher and level it out. i ordered a shackle relocation bracket for thew rear and and panning on ordering 8" springs for the front and a drop pitman arm. i just want to know if i can run the 8" springs with in the front with stock uppers and the rc lowers that came with the original lift? i am ordering a iro longarm upgrade in a couple weeks when my tax return get here so it wont be ran long i just want to know if its possible for the meantime. thanks
CF Veteran
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
ok so currently i have a rc 4.5 lift on my jeep and i did a 8.8 swap and made a bastard pack for the rear and now the back sits higher.so i want to go a little higher and level it out. i ordered a shackle relocation bracket for thew rear and and panning on ordering 8" springs for the front and a drop pitman arm. i just want to know if i can run the 8" springs with in the front with stock uppers and the rc lowers that came with the original lift? i am ordering a iro longarm upgrade in a couple weeks when my tax return get here so it wont be ran long i just want to know if its possible for the meantime. thanks
No. Absolutely not.
CF Veteran
Joined: Aug 2011
Posts: 3,648
Likes: 4
Model: Cherokee
ok so currently i have a rc 4.5 lift on my jeep and i did a 8.8 swap and made a bastard pack for the rear and now the back sits higher.so i want to go a little higher and level it out. i ordered a shackle relocation bracket for thew rear and and panning on ordering 8" springs for the front and a drop pitman arm. i just want to know if i can run the 8" springs with in the front with stock uppers and the rc lowers that came with the original lift? i am ordering a iro longarm upgrade in a couple weeks when my tax return get here so it wont be ran long i just want to know if its possible for the meantime. thanks
Junior Member
Joined: Mar 2012
Posts: 80
Likes: 0
From: Stoddard NH
Year: 98
Model: Cherokee
Engine: 4.0
I'm going from 3" to 4.5 and am wondering if I'll need extended U bolts for 4.5 leafs. My current u bolts work with my 3" AAL but I'm not sure they'll reach with 4.5 leafs. Any opinions?
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
I used stock size u bolts for 6 leafs and it had Lot of thread left i will admit. Its advised not to re use u bolts in case you stretched the threads out
CF Veteran
Joined: Apr 2011
Posts: 14,553
Likes: 1
From: Carrollton, GA
Year: 1994
Model: Cherokee
Engine: Inline 6 4.0L High Output
Assuming you got new u bolts with your AAL kit, yes. Although u bolts are only supposed to be torqued once or twice at the most since they stretch, so they should be replaced.
Senior Member
Joined: Oct 2011
Posts: 731
Likes: 0
From: St. Albert
Year: 1989
Model: Cherokee
Engine: 4.0L I6
I brought my stock u-bolts to a spring shop, and said "get me these in 1/2", 1.25" longer." $30 later I was out the door. About half the price of what some brand names want for u-bolts (OME, Skyjacker, etc), and that was before shipping to Canada for me.
To summarize, going local for these might be a good option.
Junior Member
Joined: Mar 2012
Posts: 80
Likes: 0
From: Stoddard NH
Year: 98
Model: Cherokee
Engine: 4.0
You should be okay. Best way is to find out how thick the 4.5" pack is, then measure your's. If you have 4.5" spring thickness minus stock+AAL thickness worth of thread left, they will work. If they are the stock original u-bolts, I would get new ones anyways, and upgrade to 1/2" (7/16" is stock).
I brought my stock u-bolts to a spring shop, and said "get me these in 1/2", 1.25" longer." $30 later I was out the door. About half the price of what some brand names want for u-bolts (OME, Skyjacker, etc), and that was before shipping to Canada for me.
To summarize, going local for these might be a good option.