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 Post subject: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 1:26 am 
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Does anyone have a spare LCA that they could pop the bushing out of and take measurement of? I wanna see if I can find a generic bushing from Energy that might drop in.

If not, are the LCA’s the same for all years of KJ? Could I grab any LCA off a pick-n-pull liberty?

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 3:13 am 
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I have some already pressed out, and man they were a pain without the correct tools, not sure if my caliper will measure that large, but you might want to remind me if I don't get back with the results within a week

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 1:35 pm 
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Great, thanks. Things are a bit loose up front so I am hoping I could just drop the LCA's and swap in poly bushings and get everything tightened up again. Of course I will share my findings with everyone.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 1:39 pm 
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mass-hole wrote:
Great, thanks. Things are a bit loose up front so I am hoping I could just drop the LCA's and swap in poly bushings and get everything tightened up again. Of course I will share my findings with everyone.

A PN would be real nice to have on file for future reference!!!! :mrgreen:

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 2:01 pm 
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mass-hole wrote:
Great, thanks. Things are a bit loose up front so I am hoping I could just drop the LCA's and swap in poly bushings and get everything tightened up again. Of course I will share my findings with everyone.


Sure thing, I replaced all of mine at 165k and it handles much better, but now I have the rear sway again because the rear triangle is toast after 35k. Iron rock should solve that long term!
I'm in the midst of a move, so the bushings are at my old place, hence the delay

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Mech fan, VH & AC delete


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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 2:36 pm 
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WWDiesel wrote:
mass-hole wrote:
Great, thanks. Things are a bit loose up front so I am hoping I could just drop the LCA's and swap in poly bushings and get everything tightened up again. Of course I will share my findings with everyone.

A PN would be real nice to have on file for future reference!!!! :mrgreen:


I did just order a set of energy suspension sway bar bushings. Part number is 9.5172R. It looks like they should fit based on the bar OD and bolt spacing on the OE brackets. Ill let everyone know of that as well.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 2:53 pm 
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Mountainman wrote:
mass-hole wrote:
Great, thanks. Things are a bit loose up front so I am hoping I could just drop the LCA's and swap in poly bushings and get everything tightened up again. Of course I will share my findings with everyone.


Sure thing, I replaced all of mine at 165k and it handles much better, but now I have the rear sway again because the rear triangle is toast after 35k. Iron rock should solve that long term!
I'm in the midst of a move, so the bushings are at my old place, hence the delay


Can you measure the LCA's themselves? It looks like with the universal Energy bushings you order a set of flanged bushings and then you need to provide a DOM tube with the proper OD/length for the LCA and ID to set the preload for the poly bushings.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 6:30 pm 
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I've got one set from a parted jeep, but it has good bushings in it and I about killed myself when I pressed out the bushings on mine with the funky angles. I made all sorts of jigs to get it done but it took massive force to press those things out. I'm guessing nearly the full force of my 20 ton press.

You probably need accurate internal dimensions right?

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Mech fan, VH & AC delete


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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 7:03 pm 
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Mountainman wrote:
I've got one set from a parted jeep, but it has good bushings in it and I about killed myself when I pressed out the bushings on mine with the funky angles. I made all sorts of jigs to get it done but it took massive force to press those things out. I'm guessing nearly the full force of my 20 ton press.

You probably need accurate internal dimensions right?


That’s what I was thinking based on how the energy bushings work but don’t kill yourself.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Tue Jan 16, 2018 8:00 pm 
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Dang, I bet the bushings I pressed out are within a couple of thousands. Yeah, if I ever feel the need to replace them again I'll buy new lca's with the bushings already installed. Unless I can find a kit of the right press jigs for cheap. It's some crazy angles without special tools

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Mech fan, VH & AC delete


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 Post subject: Re: Poly bushings for LCA?
PostPosted: Wed Jan 17, 2018 11:01 am 
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The lower control arm bushings have the following dimensions.
Bolt sleeve length - 80mm / 3.15"
Bolt sleeve ID - 16.25mm / 0.64"
Bushing OD - 61.5mm / 2.421"
Control Arm mount width (outer tube) - 45.5mm / 1.795"
Control Arm mount diameter (outer tube) - 77.75mm / 3.06"

This would require a urethane bushing with a very large flange width and have never seen a urethane bushing close to these dimensions.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Wed Jan 17, 2018 1:48 pm 
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CB Eng wrote:
The lower control arm bushings have the following dimensions.
Bolt sleeve length - 80mm / 3.15"
Bolt sleeve ID - 16.25mm / 0.64"
Bushing OD - 61.5mm / 2.421"
Control Arm mount width (outer tube) - 45.5mm / 1.795"
Control Arm mount diameter (outer tube) - 77.75mm / 3.06"

This would require a urethane bushing with a very large flange width and have never seen a urethane bushing close to these dimensions.


No, I have not heard of anything like that either. That is huge.

More importantly, you have a 2260VKLR in your WK. That is awesome. How does it spool compared to the stock 2056? I see there are some vendors overseas that retrofit 2260VK housings onto these so it would be a bit more plug and play with a liberty CRD but that is a lot of turbo for this motor.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Sun Jan 21, 2018 3:26 pm 
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What are your thoughts on bushings made from UHMW or Delrin as compared to Rubber or Poly?
I realize that this thread is about the front and rear bushings, however, I am finding that on my vehicle the bushing on the LCA which supports the lower strut connection to the arm is getting beat up even faster than the other two.
If I were to make these out of the above mentioned material, is there a reason why the harder material would be inappropriate? (other than a little more NVH).
Sure would help with longevity and keeping the alignment in spec around corners.

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 Post subject: Re: Poly bushings for LCA?
PostPosted: Sun Jan 21, 2018 6:28 pm 
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DocB wrote:
What are your thoughts on bushings made from UHMW or Delrin as compared to Rubber or Poly?
I realize that this thread is about the front and rear bushings, however, I am finding that on my vehicle the bushing on the LCA which supports the lower strut connection to the arm is getting beat up even faster than the other two.
If I were to make these out of the above mentioned material, is there a reason why the harder material would be inappropriate? (other than a little more NVH).
Sure would help with longevity and keeping the alignment in spec around corners.

You will want one side to have a rubber/poly bushing if you plan on street driving it,your kidneys will thank you.

I've driven vehicles with hard bushings on both ends and the ride and noises are horrendous,swap one end for a actual rubber/poly bushing and most of that harshness goes away.


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