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90 yj suspension build

4K views 43 replies 4 participants last post by  RIP91YJ 
#1 ·
I'm going to be getting SOA and I'm thinking about 1" lift springs and 5" shackles giving me a 1/2" lift. So in the end ill have a total of a 7" lift. But should I get normal or boomerang shackles and how far will I need to drop the transfer case and what else will I need to do for the lift to work. And what size tires will i be able to run with good flex in the end.
 
#3 · (Edited)
I would go with booms and there is a guy on ebay sells em for 25 with out hardware but i got some.daystar greasable bushings and they worked out great, ur prolly gonna need 2" tcase drop amd change your pinion angle and go to a double cardigan rear driveshaft get ahold of ibuildembig he can help u out

looks like that guy doesn't sell them anymore but there are a few others out there may be able to get a greasable set for the same price, i would just shop around alittle on those
 
#18 ·
aren't the stock springs too flexy (axlewrap)? I recently went SOA with 33s and they are way too tall, however I have what I believe to be OME springs that arbout 2.5-3 inches so its very tall. Its not on the road yet so I haven't had a chance to flex it but the front seems to be very flexy using a jack haha.

Also you have to think about supporting modes when going SOA, SYE, t case drop both in my case :facepalm:
 
#22 ·
Dont go too high (like I did) and it shouldn't be a huge problem, I have a one inch t case drop and my static drive shaft angle is still around 26 degrees. Every jeep is difffernet and yours may not be nearly as bad as mine. I may end up having to do a MML with t case drop to get an acceptable drive shaft angle.

As far as pinion angle and driveshaft my best advice is to loosely bolt everything up under the jeep before you weld ANYTHING and make sure ALL angles are acceptable. For example just sit the jeep on the perches and loosely put the u bolts on, then measure the drive shaft and pinon angle. Adjust it to your liking and if you need a MML or t-case drop do that BEFORE welding the perches on. You can find all the info you will need on angles and drive lines online.
 
#24 ·
Yea I think I'm going to buy a traction bar if I can find one that will work and since I'm getting new axles I'm going to buy everything first the moc it all up then once its all good ill weld it in. Hopefully I have my chevy finished when I do this so i have something to drive thats not a ford. Don't want to return on foot. Lol
 
#27 ·
In that first pic you put up it looks like you have the Sahara flares is that what you have. And if it is how wide are your axles to reach the width cause mines a Sahara and the tires are about 2 and 1/2" in the flares I need em wider but I'm not wasting money on wheel spacers until I get new axles
 
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