YJ springs on a CJ

I'd like to put YJ springs on my CJ to improve the ride and to replace the weak rear shackles. Does anyone know if YJ springs with 2 inches of lift will also equate to 2 inchs of lift on a CJ? The rear shackle mounts differently on a YJ than a CJ. The upper shackle goes through the frame.

 

Seen this?
http://www.earlycj5.com/tech/SpringsShocks/yjconv/index.php

 

Are you wanting to do the front and rear or just the front? I did the front of my Jeep but I had custom made YJ spring built to CJ length. I got the width I wanted but not the hassle of longer front springs. I also did a shackle reversal while I had everything torn apart. I left my stock CJ springs in the rear.

 

Actually I put front YJ springs on last year and really like them. I now want to put YJ springs on the rear and have purchase all the necessary brackets and YJ shackles but have not yet ordered the springs. I'm worried about having a level rig. I have 2 1/2 inches of lift in the front with the YJ springs and need the same lift in the back. If I buy rear YJ springs with 2 1/2 inches of lift will my Jeep sit level or higher. That's my concern especially since YJ's have a different rear shackle mount than CJ's.

 

I have the same questions. I have read the tech artical and all, but still have not found what height will be with stock wrangler springs.

 

The front YJ springs I put on my CJ were Rubicon Express springs with 2 1/2 inch lift. They were right on the money at 2 1/2 inches of lift. Problem is Rubicon Express doesn't offer the 2 1/2 inch spring with the military wrap anymore. Now I'm shopping other spring company that offer springs with the military wrap in order to match my front springs. I'm leaning towards BDS they sell a 2 inch YJ spring that you can put on the front or rear of the Jeep. But again I' worried about matching the front height.

 

The rear lift will actually be one inch lower than the stated lift. Use 1" or 1.25 " lift shackles to even it out. After talking with HudsonHawk and a couple other folks, I did this to mine and it works great.

 

That is really good new! I've been worried about having to much lift in the rear and having both an unlevel rig and wrecking my drive line angle. An inch or so less would be perfect for me. Thanks for your imput.

 

So, if I understand this correctly, if I were to put stock YJ springs on my 72 cj, it will be the same height as it is with stock cj springs. Or am I missing something? I am looking to put a 2 1/2 to 3 inch lift to clear some 33's and maybe changing to yj springs at the same time, but I don't know what the stock springs would net me.

 

I can speak from experience on the front springs. The 2 1/2 lift YJ springs I put on my 76 CJ-7 lifted it 2 1/2 inches. You have to change the front spring hanger to accept the wider springs and of more concern is that the YJ springs are slightly longer and move the axle forward some. This could cause some clearence issues with your steering arms.

The rear YJ springs I don't know about yet. On a YJ the rear upper shackle goes through the frame, there is no spring hanger under the frame for the shackle like on CJ's. Because of this I was concerned about rear YJ springs having a greater arch and when put on a CJ would lift it to the moon. Give me about a week and I know for sure what YJ springs do on the rear of a CJ.