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Unread 04-22-2014, 01:29 PM   #1
Daves86cj
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1986 CJ7 
 
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Location: Grosse Pointe, Michigan
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Shackle & Bushing Selection Help

I need to replace all the shackles and bushings on my CJ. The good news is that I was able to loosen all but one bolt (twisted the nut off, grrrrrr..). Now all I need to do is order the parts.

I'm beginning to realize that it often takes longer to research and decide on which parts to order than it take to do the actual job! Also, the surprising number of choices and opinions can be confusing and frustrating!

My CJ7 is strictly a street vehicle, no serious off-road use. The suspension is stock, no lift. The shackles were frozen solid until I was able to break loose the bolts and now they move a bit (better ride already). I just want a nice set of front and rear greaseable shackles (poly) and the associated hanger bushings and greaseable bolts.

I've kind of settled on Rubicon RE2781 and RE2782 front and rear shackle kits which can be had for $75 each with free delivery from Quadratec and others. I can't seem to find a matching Rubicon kit for the other end of the springs, the hangars. It seems it would make sense to keep the parts from the same company. Even if I buy another brand of bushings and bolts for the hangars the total cost should be around $200 which isn't bad. Any suggestions?

Quadratec says that the shackles are 1" oversize giving a 1/2" lift, but then they say the shackles measure 4.5" center to center. My stock shackles measure 3" C2C. This would be a 3/4" lift according to what I have read on the forum. The real question is can I do a 1/2-3/4" lift without causing myself any other problems to the suspension or driveablitity. I don't really care about the lift, just want the cj to ride and steer better.

Any thoughts and advice would be appreciated

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Unread 04-22-2014, 01:42 PM   #2
Daves86cj
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Just wondered....

I was just thinking about my post and wondered if all other things being equal, do longer shackles allow the springs to flex easier? Seems like they would.
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Unread 04-22-2014, 06:44 PM   #3
jeepwhore
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Quote:
Originally Posted by Daves86cj
I was just thinking about my post and wondered if all other things being equal, do longer shackles allow the springs to flex easier? Seems like they would.
Only if the springs have the length and flex to utilize it. On a jeep with stock springs longer shackles typically do more harm than good if they are more than an inch longer than stock.
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Unread 04-22-2014, 08:17 PM   #4
Tigerjeep79
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I like my stock shackles with rubber bushings. With Crabtree hangers that will never break, I consider the shackles as a fuse. Easier to replace than a hanger and cheap enough to carry a spare. And they ride great.
shackle-2-better-.jpg

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Unread 04-23-2014, 10:43 AM   #5
Mike Romain
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I have the 1" longer YJ shackles on mine that give the 1/2" lift with no issues on stock re-arched springs. The steering still behaves OK.
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Unread 04-23-2014, 02:02 PM   #6
Renegade82
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Quote:
Originally Posted by Daves86cj View Post
I was just thinking about my post and wondered if all other things being equal, do longer shackles allow the springs to flex easier? Seems like they would.
Yes, they allow more droop, but, if it's a short spring(little arch) they could limit compression once the spring is flattened out.

A 1" longer shackle will not hinder your steering, provided your caster was not out of whack to begin with. I used a 2" longer shackle on a Jeep that was only 2 years out of the factory with no issues for well over 10 years. It's best to check your caster to see where your at. Ideally it's 5-7 degrees for the later year Jeeps. A simple fix is to install steel caster shims.

Here's a piece on shackles:
http://www.quadratec.com/jeep_knowle...article-93.htm
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Unread 04-23-2014, 06:07 PM   #7
mylittlecj5
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