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Unread 04-07-2012, 12:00 PM   #1
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1972 CJ5 
Join Date: Nov 2011
Location: Loganville, Ga
Posts: 65
YJ Spring conversion

Just picked up a set of YJ springs, shackles, spring plates, and u bolts for $80. Best deal I've found yet! Curious if anyone knows or has a set 2.5 in hangers and perches?

Any pointers / how to tips for doing this on an intermediate would be great!


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Unread 04-07-2012, 03:34 PM   #2
NoNative's Avatar
1986 CJ7 
Join Date: Jul 2010
Location: Ft. Worth, TX
Posts: 242
I bought Jim's yj hangers and they rock. Use the google search function at the top left of the page and you should be able to find him pretty easy. He's a forum member and makes them.

1986 CJ-7 Laredo, 258, AX15, AC Dana 30/44, Ox Lockers, Howell TBI, DUI, 4.5" RE YJ Springs, 1.25" BL, clocked & twin-sticked Dana 300 with Lomax 4-1, 4.10s, 33s, PB, 8000# winch, YJ Roll Bar, Factory 20 gallon tank.

1984 CJ-7 Renegade, 258, T4, AC, Howell TBI, DUI, 2.5" OME YJ Springs, 3.53, 31s, PB, Warn bumpers & 8000# winch, Factory 20 gallon tank

1984 CJ-7 Renegade, 258, Auto, AC, 3.31s, PB, Factory 20 gallon tank, Bone stock except for 31s
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Unread 04-07-2012, 05:16 PM   #3
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1981 CJ7 
Join Date: May 2011
Location: Elbert, CO
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Don't forget to move the front shackle bracket forward about an inch (you'll have to remove a frame rivet), since the YJ fronts are longer.

You'll also have to correct the caster. Most either cut and reinstall the spring perches, or use shims.

Good luck,

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Unread 04-08-2012, 04:07 PM   #4
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1984 CJ7 
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If you buy an aftermarket shackle hanger, like the MORE ones I did you don't have to remove the rivet in the crossmember. They have a hole that fits over it. I don't know about the crabtree ones though.
1984 CJ7 - Under construction
4.6L stroker with MPI & AX15 with D300
OME 2.5" YJ springs
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Unread 04-09-2012, 04:05 PM   #5
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Originally Posted by Matt1981CJ7 View Post
You'll also have to correct the caster. Most either cut and reinstall the spring perches, or use shims.

Maybe I missed something but I don't understand why you would have to correct the castor by changing to YJ from CJ springs. I get it if the OP were lifting at the same time, but OEM to OEM all it is going to do is move the front axle forward by 1/2", but it doesn't change the pinion angle by any noticable measurement.

Help me understand please?
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