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I couple of weeks back I installed a shackle reversal on my 78 CJ5. Before I purchased the s/r kit, I asked about lift shackles on it. I was told (by several people) that you couldn't use lift shackles on a s/r because it would cause me to pull apart my front driveshaft. After install (and tranny transfer swap) my stock driveshaft was too short any way. So I figured.... install lift shackles and then take measurement..... presto chango ..... extra 1 1/2 of lift!!!
Well today I installed the lift shackles. Everything went fine. But when I drove around town, occationally the front end would shake violently!! Like I was loosing a wheel. I'm assuming that the lift shackles are allowing the springs too much lateral movement..... bummer! So is this correct? or should I look for some other answer before counting out the lift shackles?

btw.... it ran fine at highway speeds or just walking..... about 30-35 mph.... loosing control.......(glad I didn't buy a driveshaft yet!!)

IN2DEEP 78 CJ5 302 FORD T176/D300 35" BFGS
 
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No expert here..........but it sounds like you need shims (usually or reweld the perches)(or turn the knuckles....depends on what axle you have and what you want your pinion angle to be).

By using the correct degree of shim correction you'll correct the caster, which sounds to me to be your problem.

jo-jo
'77 CJ5 Fozzy Locker
20 degree RTI 1250

'87 Samurai Stock (for now)
 

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i agree.. you need to adjust your caster angle... when you go around a corner, does your steering wheel center itself like it is supposed to?? thats a sure sign you need to correct your caster... shims are easy, but they hurt driveline angles..grinding off the knuckles and re-welding them at a different angle is a REAL PITA but possible..seems like you'd want to do it only once though, so start with a dana 44... just my opinion

~~Elusive~~
it's sort of still a cj thingy....
 
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I'm having the same type of type of problem with my 1980. Doesn't center after a turn and seems to kinda "dart" into turns. bearings are fine everything seems OK, but steering shaft has a little play. I put the correction shims in to turn the pinion UP so better drive shaft angle. Did I do it backwards. I haven't measured it but sure doesn't look like much caster. BTW Rancho 2.5" with SRS and 9000's


 
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between the reversal and the longer shackles you may now have too much caster. this will cause a shoppin cart with a bad wheel effect. check and see how much caster you have, try not to exceed six degrees.

dan
Good things come to those who do research!!
 

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If your looking for more lift with you shackle reverse, this works on my 89 Wrangler. I have 2" Old Man Emu front springs with a SOA, and SR in the rear I run 2" OME springs with a helper spring. It gives me about 6" of lift. It also allows the use of 33" shocks and take advantage of the 14" of travel.In the rear you need to lay down the shocks to get full advantage. Road handeling is a little mushy, but articulation is fantastic,(Using R9000s really helps because of the adjustability), and although I dont beleive good ramp numbers mean didly on the trail it does score very well, (1000 on a 30 deg. ramp).
Jeff
89 Wrangler

 
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