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Unread 10-26-2009, 11:44 AM   #1
Kevin108
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How to address rear sag while keeping stock height?

My 00 has had all the typical issues - valve cover gasket, passenger door switches, etc - and now I'd like to address the 1½" rear sag. I don't want to lift it or change the ride. I'm okay with the height and I think it rides great. I would like to level the rear back out and help it cope with towing 1500 lbs or so (2 ATVs and a trailer) from time to time.

I've read a few threads about building bastard packs but I'm worried that an additional spring may make it right too rough. I can get the springs rearched locally but some things I've read make our leaves sound prone to cracking anyway so I don't know that getting them rearched is a good idea either.

We do have a decent pick and pull boneyard about 45 mins away so getting additional springs shouldn't be that difficult or expensive. The labor isn't intimidating at all. I've done all my own repairs and mods since I started driving and Dad's a retired professional mechanic so I have access to a lot more than basic hand tools. I just need some info on what my options are.

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Unread 10-26-2009, 11:52 AM   #2
cbordea
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I expect you will get the following advice. The best fix is a new leaf pack, it is also the most expensive.
You might find a leaf pack under a JY XJ that isn't tired and just swap that.

Otherwise a bastard pack might be what you need.
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Unread 10-26-2009, 11:54 AM   #3
CJ7-Tim
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The design and construction materials of the Cherokee leaf springs was not the best, which is why they sag. Re-arching the springs may not be worth the cost or effort, you still will have the same deficient springs, prone to sagging.

The replacement springs that Quadratec sells are popular with JeepForum user and by their reports work well. If you can find some junkyard leaf springs that are not sagged, installing an extra stock leaf will add load capacity and slow down or prevent future sagging. The only way to check junkyard leaf springs for sag is to inspect them with the tires on the axle.
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Unread 10-26-2009, 01:13 PM   #4
jkh
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adding a leaf or two from another stock XJ pack works well and it doesn't make the ride rough. It is a little more firm, but definitely not rough.

one caveat: it is a PITA. If you are looking for easy, the Quadratec replacements would be a good bet.
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Unread 10-26-2009, 02:23 PM   #5
Kevin108
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Can one of you link me to what pack you're talking about?
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Unread 10-26-2009, 05:46 PM   #6
cornbrizzle
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Original Replacement Parts 4886186AA - Heavy Duty Leaf Spring Assembly for 84-01 Jeep® Cherokee XJ - Quadratec


Here you go .


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Unread 10-26-2009, 07:52 PM   #7
93jeepsport
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The 'heavy duty' quadratec springs will give you about 1 1/2" of lift. If you want stock height but better quality and good ride, get the 'medium duty' ones. Here is the cheapest I have found them. These are the exact same ones as the medium duty ones in the quadrtec magazine, but $15 cheaper each. I bought the quadratec heavy duty originally and they made my stock 98 XJ Classic sit like a funny car. Medium duty are stock height and from what I understand, are very similar to what the stock towing springs were.

Morris 4x4 calls all of their replacement leaf springs heavy duty but these are the exact same Crown part number as the quadratec 'medium duty.'

Leaf Spring Assembly, Heavy Duty (LK) 4 Leaf*4886187AB by the Jeep Specialists | Morris 4x4 Center

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Unread 10-26-2009, 07:57 PM   #8
Kevin108
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It looked affordable at first but then I realized that I needed two of those. DOH! Yeah, I think I'll probably try a full length AAL from something.
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Unread 10-27-2009, 01:19 AM   #9
Luke94XJ
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get a 2" aal I guess or a 2wd s10 main leaf with the eyes cut off, or the secondary s10 leaf. Maybe one of those will help. You can obviously look for a dakota or something too.
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Unread 10-27-2009, 04:33 AM   #10
01CHEEKEE
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it def isn't hard to install an AAL, as long as you have jack stands, jack (for the axle), and and angle grinder or some sort of tool to cut that bolt off in the middle...all it consists of is cutting that bolt, seperating the leaves and inserting the AAL where it's supposed to fit, and then putting it all together w/ a new grade 8 bolt and either some u-bolts...as long as you're not trying to replace the main leaf, it's easy...
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Unread 10-27-2009, 07:40 AM   #11
hubs97xj
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The celebrated "QuadraTec HD leaves" are simply Crown replacements for the Up Country package. edit- Dang, Morris raised the price. Got them delivered earlier in the year for about $180, I think. They were $20 cheaper per side than QT.

1" higher than stock, firmer ride, much less squat when hauling or towing. Rides and handles really well loaded.
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Unread 10-27-2009, 08:06 AM   #12
19DeltaXJ
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Leafs

Having done 5 mods to my '98 leafs (3 re-curves 2 new spring packs), I've been up and down the scale with satisfaction. Mostly down. Both new springs packs purchased were to provide lift. Both did, however my daily driver rode like an empty dump truck. Therefore I've been thru varying configurations of repacks and recurves that still leave me wanting.

If you are reluctant to replace your leafs with OEM spec'd leafs (my recommendation) why don't you try some HD shackles for 1.5" lift for $85 and 1/2 hour worth of work? You mentioned you are still pleased with the ride...

TeraFlex Shackles - Quadratec
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Unread 10-27-2009, 06:00 PM   #13
Luke94XJ
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honestly the $40 ones on ebay are about the same quality.
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Unread 10-27-2009, 06:27 PM   #14
mcthnif
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Gabriel Hi Jacker air shock. Get them at Autozone for about $65.00. They are fine for getting the 1 to 1.5 inch sag out, and work good for pulling a trailer too. Had mine for about a year, and The still work great. They are only good for stock heigh, so If you plan to lift, You will have to spring for more shocks.
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Unread 11-04-2009, 01:58 PM   #15
Kevin108
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I was just checking some things on eBay and it crossed my mind that just putting some inexpensive lift shackles on would probably address my problem for a fair amount of time. It's item # 360202688883 Every time I put in the link the forum software does something gay and breaks it.
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Last edited by Kevin108; 11-04-2009 at 02:17 PM..
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