FKreider Posted January 20, 2012 Share Posted January 20, 2012 I'm going to swap in some Rusty's 3.5" XJ coils and some RC lower tube control arms onto my currently stock XJ. What is the best way to approximatly match this lift in the rear? Its a 2wd shortbed with the 4.0 and AW4 trans. It already sits higher in the rear as of right now, I was thinking a 2" XJ lift shackle would be enough for now? I will be converting it to 4x4 sometime in the neer future also. I will be going SOA (when I swap in a 88) with the stock springs and shackles so I don't want to waste money buying any lift springs. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted January 20, 2012 Share Posted January 20, 2012 some chevy drop shackles form the parts store should do what you want. IIRC MJ springs are wider that XJ springs so the XJ shackle would not work Link to comment Share on other sites More sharing options...
87Warrior Posted January 20, 2012 Share Posted January 20, 2012 some chevy drop shackles form the parts store should do what you want. IIRC MJ springs are wider that XJ springs so the XJ shackle would not work Close but no cigar. The MJ shackles are longer than the XJ shackles. You can replace the stock MJ shackles with XJ lift shackles but you will net zero to very little lift. Chevy drop shackles will net you about 2" of lift. Oftentimes they have multiple holes drilled to mount the spring so you can fine tune how much lift they will give you. Link to comment Share on other sites More sharing options...
ComancheKid45 Posted January 20, 2012 Share Posted January 20, 2012 a 3" XJ AAL will net you around 1.5-2" of lift in your MJ as well ;) Link to comment Share on other sites More sharing options...
Blue88Comanche Posted January 21, 2012 Share Posted January 21, 2012 some chevy drop shackles form the parts store should do what you want. IIRC MJ springs are wider that XJ springs so the XJ shackle would not work Close but no cigar. The MJ shackles are longer than the XJ shackles. You can replace the stock MJ shackles with XJ lift shackles but you will net zero to very little lift. Chevy drop shackles will net you about 2" of lift. Oftentimes they have multiple holes drilled to mount the spring so you can fine tune how much lift they will give you. i knew there was something i forgot about the xj shackles Link to comment Share on other sites More sharing options...
Backroads Posted January 21, 2012 Share Posted January 21, 2012 Some XJ guys use MJ shackles to gain a little extra lift, going to xj shackles isnt going to give you anything. I would either find an xj spring pack and add a couple leafs to your pack and buy a cheap pair of shackles (ie rough country) for a 2" or budget boost, that would beleast expensive. Link to comment Share on other sites More sharing options...
FKreider Posted January 22, 2012 Author Share Posted January 22, 2012 I was going to order the shackles Online does anyone know which chevy shackles specifically work good? Link to comment Share on other sites More sharing options...
btm24 Posted January 22, 2012 Share Posted January 22, 2012 Not sure, but you could always get some Adjustable Shackles like these from iron man http://www.ironman4x4fab.com/Products/RLS.html That way you could adjust them to the hight you want. Good luck Brandon Link to comment Share on other sites More sharing options...
mvusse Posted January 22, 2012 Share Posted January 22, 2012 Chevy 2" drop shackles may lift a Cherokee 2", but not a Comanche. The net lift I got on my MJ was ~0.75" to 1". Link to comment Share on other sites More sharing options...
FKreider Posted January 22, 2012 Author Share Posted January 22, 2012 Does anyone know the length of stock MJ shackles? and what length equals how much lift? For instance stock YJ shackles are 4" bolt to bolt. After that for every inch you gain 1/2" lift. So a 6" shackle is 1" lift for a YJ. It would be great to figure out this rule of thumb for MJ shackles. Link to comment Share on other sites More sharing options...
Pete M Posted January 22, 2012 Share Posted January 22, 2012 5 3/4' I think Link to comment Share on other sites More sharing options...
kyleag89 Posted January 22, 2012 Share Posted January 22, 2012 5 1/2" eye to eye on the MJ. Chevy drop shackles measure 6.5 or 7.5" eye to eye. But the MJ axle isn't centered on the leaves like a XJ so using the 7.5" hole only gives the MJ 3/4" lift max. Link to comment Share on other sites More sharing options...
Eagle Posted January 22, 2012 Share Posted January 22, 2012 If the axle was centered front-to-rear, you would need a shackle 2" longer to get 1" of lift. This doesn't calculate out exactly when the axle isn't centered, but it's probably close enough for approximating. 2:1 -- so if you want 3 inches of lift, you need shackles 6 inches longer than factory. (Not a good idea.) Link to comment Share on other sites More sharing options...
FKreider Posted January 22, 2012 Author Share Posted January 22, 2012 If the axle was centered front-to-rear, you would need a shackle 2" longer to get 1" of lift. This doesn't calculate out exactly when the axle isn't centered, but it's probably close enough for approximating. 2:1 -- so if you want 3 inches of lift, you need shackles 6 inches longer than factory. (Not a good idea.) Yeah I don't really like any lift shackle for any truck over 2" longer than factory. I was just exploring this option to see what I could do. I am new to the MJ's so its a good thing I asked and didnt just order up a set of XJ" lift shackles. Link to comment Share on other sites More sharing options...
btm24 Posted January 22, 2012 Share Posted January 22, 2012 You could go with a new set of springs from hellscreek. Brandon Link to comment Share on other sites More sharing options...
FKreider Posted January 22, 2012 Author Share Posted January 22, 2012 You could go with a new set of springs from hellscreek. Brandon The whole point was keeping it cheap untill I go SOA but I'm waiting to get a 8.8 for that and I also have to wait for my friend to pull his longarms and 5.5" coils so he can sell them to me. Link to comment Share on other sites More sharing options...
Eagle Posted January 23, 2012 Share Posted January 23, 2012 If you can lay your hands on another set of MJ rear springs, or a set from an older Dakota (one with springs under the axle) or (I think) a Ford Explorer (???), cut the eyes off the main leaves and use those plus the second leaves as AALs. Just the mains should give you about 1-1/2" to 2" -- using two additional leaves should get you to where you want to be. Link to comment Share on other sites More sharing options...
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