Default YJ Spring Conversion 

Old 08-13-2012, 08:17 PM   #1
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Hey guys, new here *nd I *m not ex*ctly mech*nic m*teri*l. I h*ve seen * lot of discussion on converting * CJ to the YJ springs, *nd I h*ve * couple questions. 1) Wh*t *re the benefis g*ined? 2) Is it worth it for moder*te tr*il riding? 3) Wh*t *re *ll of the things th*t go *long with the conversion? (p*rts wise). Sorry for comin right out of the g*te with * ton of questions but I *ppreci*te it.

 

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Default Re: YJ Spring Conversion 

Old 08-13-2012, 08:34 PM   #2
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Sorry to t*g te*m on your thre*d Inst*, but I h*d * question *bout them myself, *nd I didnt w*nt 2 thre*ds right next to e*ch other *bout the s*me thing. So in *ddition to the questions *bove, if I do * YJ spring conversion, do I just then purch*se * YJ lift, or do I only get YJ springs but the h*rdw*re for * CJ?

 

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Default Re: YJ Spring Conversion 

Old 08-13-2012, 10:05 PM   #3
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The biggest thing you g*in from * yj spring ch*nge is you get * wider spring in the front *nd their ride is * lot softer. You c*n buy the full kit to do the sw*p our you c*n peice it together.
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Default Re: YJ Spring Conversion 

Old 08-14-2012, 08:09 AM   #4
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Yes, it's *bout * better ride *nd more flex. Plus you h*ve * l*rger selection of lift kits to choose from. I'm in the middle of * tot*l restore *nd th*t's the direction I'm going.
You c*n get * kit th*t should h*ve everything you need *nd m*ybe some stuff you don't. I'm piecing mine together due to some specific things I need such *s spring pl*te skids *nd gre*s*ble sh*ckle bolts. I got Old M*n Emu le*f springs, which *re *v*il*ble in different weight r*tes, for $98 e*ch + $22 for gre*s*ble yellow bushings. I'm using the he*vy re*r YJ springs in the front too bec*use of * winch *nd he*vier bumper, *nd I h*ve * h*rdtop.

But b*sic*lly you need yj springs, * new spring pl*te (their pumpkin is on the drivers side), wider sh*ckles *nd mounts, *nd for some you m*y need to move the sh*ckle mount forw*rd 1/2" (drill out the rivot) bec*use these YJ springs *re 1" longer th*n CJ front springs. The re*r springs *re pretty much * sw*p in-out.

 

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Default Re: YJ Spring Conversion 

Old 08-14-2012, 11:22 AM   #5
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So once you h*ve the conversion kit *nd *re choosing your springs you shop for YJ springs only *nd not CJ?

 

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Default Re: YJ Spring Conversion 

Old 08-14-2012, 01:13 PM   #6
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Yes. The re*r springs *re pretty much the s*me *s * CJ (2 1/2"), but the front springs *re different, 1" longer *nd 2 1/2" wide *s well. Some pl*ces will just sell you the springs if your piecing things together.

 

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Default Re: YJ Spring Conversion 

Old 08-14-2012, 07:14 PM   #7
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Got my OME springs, re*r YJs, from 4WD. *bout $125 e*ch.

The kit h*s some stuff you don't need *nd I didn't w*nt to p*y for. ..

 

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Old 08-14-2012, 10:06 PM   #8
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When you *re doing the conversion the minimum p*rts you h*ve to h*ve is the front spring front spring sh*ckle mounts *nd front sh*ckles from *ll from * YJ
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Default Re: YJ Spring Conversion 

Old 08-15-2012, 11:07 AM   #9
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No, the sh*ckles need to be from * CJ re*r to get the 3" bolt to bolt, if your going stock. For longer ones you just need to m*tch the re*r hole dist*nce so it sits level. YJ bolt centers *re different, th*t's the concern to keep in mind.
Technic*lly yes, just the front springs *re different. However not *ll springs *re cre*ted equ*l or give the s*me lift *s *dvertised. So you m*y h*ve issues with the Jeep setting level. The other thing is spring r*tes v*ry, so you m*y not see the full benefits of smoother ride. For inst*nce Old M*n Emu le*f springs *re *v*il*ble in different weight r*tes, light, medium, *nd he*vy for the re*r, *nd just med. *nd he*vy for the fronts (I m*y h*ve th*t b*ckw*rds). I bought he*vy re*rs for *ll *round on mine. Point being th*t *ll springs don't "s*g" the s*me setting still, or compress *nd extend the s*me when under lo*d. Now there very well m*y be * difference in spring r*tes between re*r CJ vs YJ even though dimensions *re the s*me. Th*t I don't know.

*ll th*t being s*id, yes the minimum p*rts would be front YJ springs, sh*ckles, *nd h*ngers. Wider spring pl*tes will be needed too bec*use of the *ddition*l width *nd different d*n*30 front *xle they used in yj's. Keep th*t in mind if you use * sw*y b*r or shock mount stud off of your pl*tes. *nd if your using stock length sh*ckles you'll h*ve to cut *nd knock out th*t rivot on your front crossmember *nd move the h*nger forw*rd th*t 1/2" bec*use of the longer spring.

 

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Default Re: YJ Spring Conversion 

Old 08-15-2012, 04:22 PM   #10
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So i would be good going with the BDS YJ spring conversion, *nd the YJ 4.5" lift kit? Th*t should h*ve everything I need. (I think the kit does not include the shocks, but th*ts besides the point)

 

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