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Old 05-10-2013, 09:27 AM   #1
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Shakle size

What's the biggest shakle you can run before it becomes unsafe or causes other issues, I have a 2.5 spring lift and a 1" shakle lift with boomerang shackles in the rear and I'd like another 2" and the quick and easy way would be to build shakles

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Old 05-10-2013, 09:39 AM   #2
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I'm thinking about a 2" lift shackle is as high as you'd want to go. My rear end sags because I carry a ton of tools and recovery gear. I have a 4" suspension lift w/stock shackles, planning to add 2" lift shackles just in the back.

Might be able to get away with 3 but I'll let some others chime in as Im not 100% sure...

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Old 05-10-2013, 10:05 AM   #3
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I just measured mine and I'm 4" eye to eye in the front and 4 1/2" in the back. I seem on here that 4" is a stock shackle so I guess I could go a couple more inches just with shackles
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Old 05-10-2013, 10:20 AM   #4
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sounds about right... Just measured mine (stock) I have 4" center of the bolt to center of the bolt in the front, but the same in the back. 4" center to center.
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Old 05-10-2013, 10:47 AM   #5
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So all my lift is springs, that must mean its more than 2.5... Cause I clear 33" tires no problem with room to flex
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Old 05-10-2013, 10:47 AM   #6
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2 inches of shackle lift effective is 4 inches in shackles, this is a bad idea. The entire geometry of the suspension system is affected by shackle lifts, especially that much.

Read this, link to a good write up and explanation of shackles and how they affect suspensions.

Jeep Parts, Jeep Accessories & Jeep Soft Tops From The Jeep Parts Experts - Quadratec
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Old 05-10-2013, 01:42 PM   #7
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I read it.... So it's safe to say if you added lift springs longer shackles are probably needed, however this link has me wondering if my boomerang shackles are in the correct position and facing the right way
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Old 05-10-2013, 02:41 PM   #8
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I have a 4" suspension lift on my YJ and I just went out and measured my shackles and they are the stock 4" "eye to eye"... Had to make sure.

I'm sure you could go an inch or two longer shackles and still be okay. I've seen lost of dudes with 6" shackles (which provide 1" overall lift) on here so I would say it's safe to assume assume it isn't "unsafe."

Don't know much about longer than that though... But I know I've seen people talking about 2" shackle lift... Though I've read that with 2" shackle lift you'll start to experience significantly more body roll and difficulty steering... Plus they look kind of weird...

People suggest less than an inch MAX to maintain the greatest driveability - but I have no personal experience on this...
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Old 05-10-2013, 02:50 PM   #9
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I got 4 inch suspension lift n and 2 in lift shackles to give me 6 total. At the time it was cheap way to get 2 more inches of lift but I'm over them now. Without a track bar on the front, the axle has a little bit of lateral movement; even with the sway bar connected. I wouldn't go bigger than 1" lift shackles in my opinion. Big shackles don't look good either. I want to ditch mine.

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