Coil spring relocation question

[Squatch]

Not a lot of dialog on the issue of coil spring placement. If you are to believe Rokmen's ads and the subsequent reviews for their product, this is a thing. Is it? My guess is maybe if you've got a helluva lift going, and some serious articulation, but that's just supposition on my part. What say the masses?

Here's their kit:
https://www.rokmen.com/rear-spring-and-bump-stop-correction-kit-tj-lj.html

 

[Thunderhead]

Um. I’ve never seen coils go over like their pics.

 

[jjvw]

After a 4" lift and a tummy tuck, mine looked similar. The more you raise the pinion, the larger the bow. There is some debate about how much it really matters. I don't know, myself.

The factory rear springs do have some bow to them, apparently to create a progressive rate from a linear spring. I don't really understand how that works.

I did relocate mine, mostly to get the bump stops to line up again. That is reason enough. Most do it when they outboard the shocks. Most also reuse the factory mounts. It isn't that difficult to cut them out and reposition them. Much easier than spending whatever Rokmen wants for their kit.

2003 Rubicon

 

[Squatch]

After a 4" lift and a tummy tuck, mine looked similar. The more you raise the pinion, the larger the bow. There is some debate about how much it really matters. I don't know, myself.
View attachment 36784
View attachment 36785
The factory rear springs do have some bow to them, apparently to create a progressive rate from a linear spring. I don't really understand how that works.

I did relocate mine, mostly to get the bump stops to line up again. That is reason enough. Most do it when they outboard the shocks. Most also reuse the factory mounts. It isn't that difficult to cut them out and reposition them. Much easier than spending whatever Rokmen wants for their kit.
View attachment 36786

View attachment 36787

View attachment 36783
2003 Rubicon

Nice! Yeah, I was figuring if there hasn't been much discussion on the topic, then it likely isn't an issue. Advertisers like to create and/or call our attention to problems that sometimes don't really exist. Wasn't sure if that was the case, here. To me, what they're saying does seem to make sense, but to what degree, I'm uncertain. Even if it is an issue, if you can remove the stock ones cleanly and reposition them, then you've just saved the $100 Rokmen wants for just the brackets ($190+ when bump stop kit is included). I thought I remembered you mentioning something in your build thread about repositioning your spring mounts, so I was hoping you'd chime in, @jjvw. Appreciate the input. Though I'll never need/use half the stuff I read on this forum, I love learning about it all. It's part of the automotive world I never really got involved in, so it's all new to me. Good stuff!

 

[Mike_H]

There is quite a bit of info about spring relocation on some of the other Wrangler forums. Here, there aren't a lot of fabbed up builds. Mostly bolt on stuff, so you don't read too much about guys moving shocks, springs, designing 4 links, etc. Check out some of the pirate build threads of you really want to blow your mind

 

[Chris]

How much are you lifting it @Squatch? If you're only going up a few inches, this isn't anything you should need to worry about at all, not even close.

 

[Squatch]

There is quite a bit of info about spring relocation on some of the other Wrangler forums. Here, there aren't a lot of fabbed up builds. Mostly bolt on stuff, so you don't read too much about guys moving shocks, springs, designing 4 links, etc. Check out some of the pirate build threads of you really want to blow your mind

Thanks, Chief. I'll be sure and check it out!

 

[Squatch]

How much are you lifting it @Squatch? If you're only going up a few inches, this isn't anything you should need to worry about at all, not even close.

Not even considering spring perch relocation, buddy. Just like to learn about stuff. Gets me an edumacation. I've been a car guy since I was a toddler (my parents will attest to that), but never got into anything dealing with the off road aspects of the automotive world. This stuff fascinates me, and it's like starting all over again. I haven't been this excited about a vehicle in years. Building something up to increase its capabilities off road is a whole different world than what I've been involved with for the past 40 years, or so. I feel like a little kid just learning stuff for the first time. It's pretty cool!

 

[Chris]

Not even considering spring perch relocation, buddy. Just like to learn about stuff. Gets me an edumacation. I've been a car guy since I was a toddler (my parents will attest to that), but never got into anything dealing with the off road aspects of the automotive world. This stuff fascinates me, and it's like starting all over again. I haven't been this excited about a vehicle in years. Building something up to increase its capabilities off road is a whole different world than what I've been involved with for the past 40 years, or so. I feel like a little kid just learning stuff for the first time. It's pretty cool!

Ahhh, gotcha. I thought you were thinking you needed them for your lift, which obviously you don’t. But you already know that, so we are both on the same page!

 

[Jorge Bolivar]

Not even considering spring perch relocation, buddy. Just like to learn about stuff. Gets me an edumacation. I've been a car guy since I was a toddler (my parents will attest to that), but never got into anything dealing with the off road aspects of the automotive world. This stuff fascinates me, and it's like starting all over again. I haven't been this excited about a vehicle in years. Building something up to increase its capabilities off road is a whole different world than what I've been involved with for the past 40 years, or so. I feel like a little kid just learning stuff for the first time. It's pretty cool!

I know that feeling, dealing with the offroad aspect of a vehicle is a total different science. I'm going true this process too and with the many things you cross to is quite hard to decide what is necessary or not, the best or worse. But I do love it so you will see me around for a while.

On the product you point,
When I do my TJ Lift I do notice the bump stop miss alignment and quickly think on relocate the top spring bases and align all again, simple right? But when I do look around to see what others do and the products that maybe available that may look nicer that the OEM base all sum up to understand that what @jjwv do on his built is the most sense thing to do, anyway I will be cutting to allocate the new base and can save some dough for other things on the built. So i do cut and move over the OEM base and call the day. Many of this products born with the need of them but also are detailed like Candy eye to attract the wow factor customers.
Planning on do this on the LJ too, just need the time.

 

[Squatch]

I know that feeling, dealing with the offroad aspect of a vehicle is a total different science. I'm going true this process too and with the many things you cross to is quite hard to decide what is necessary or not, the best or worse. But I do love it so you will see me around for a while.

On the product you point,
When I do my TJ Lift I do notice the bump stop miss alignment and quickly think on relocate the top spring bases and align all again, simple right? But when I do look around to see what others do and the products that maybe available that may look nicer that the OEM base all sum up to understand that what @jjwv do on his built is the most sense thing to do, anyway I will be cutting to allocate the new base and can save some dough for other things on the built. So i do cut and move over the OEM base and call the day. Many of this products born with the need of them but also are detailed like Candy eye to attract the wow factor customers.
Planning on do this on the LJ too, just need the time.

Glad to know someone can relate to what I'm going through! So, how much lift do you have? I will only have 2" to 2.5" on mine, so I doubt there would be a need for relocating the perches.

 

[Jorge Bolivar]

Glad to know someone can relate to what I'm going through! So, how much lift do you have? I will only have 2" to 2.5" on mine, so I doubt there would be a need for relocating the perches.

The TJ has 4" lift with very hard springs. And the miss aling is more noticeable. The LJ has 3.5" lift and you will not notice the misz align much. Will do more for tbe ride comfort.

On your case you still safe unless you wheel your Jeep where require considerable streaching.

 

[Squatch]

I need to revive this old thread. I spent a few hours out in the garage, working on cleaning up the TJ's frame. In doing so, I found that the spring perches have quite a bit...okay, a lot of scale rust between the bracket that mounts to the frame and the round "bucket" that the springs settles into. I started cleaning out as much of the rust as possible, but the metal is thin in some areas, and there is substantial pitting. This puts me in a position of either believing that they're still plenty strong enough to do their job, and just accept the fact that they're ugly, or just install a spring relocation kit, thereby elimination any question of strength. Of course, it would also get rid of any bow in the coils, even though that's already been discussed as not really being a problem. I'm leaning heavily toward doing the latter.

So, anyone have any recommendations for a coil spring relocation kit? Something you've used yourself? Would appreciate any input.
Thanks

 

[Hound Dog]

I found my spring perches to be rusting off the frame. I bought some new Pocono Metal perches and relocated them further back to reduce the bow even though I have a modest 2.5 inch lift. I didn't do any research or even know it was a common thing at the time. It just looked wrong in the factory position so I broke out my precision calabrated eyeball and Stanley tape measure to move them back as much as made sense when I was looking at it. Seemed to work...

 

[Squatch]

I saw the Pocono Metal perches, and wondered if they could just be moved back, as you had done. I also found that Ballistic Fabrication makes a set that are really inexpensive...like "$70 for the pair" inexpensive! Plus, they're 15% off through this Monday. Might be worth buying 'em just to check 'em out. Also, Rokmen sells a complete kit, which also includes bump stops. They claim not to add any additional height, which is a plus for my situation.

 

[Jorge Bolivar]

I saw the Pocono Metal perches, and wondered if they could just be moved back, as you had done. I also found that Ballistic Fabrication makes a set that are really inexpensive...like "$70 for the pair" inexpensive! Plus, they're 15% off through this Monday. Might be worth buying 'em just to check 'em out. Also, Rokmen sells a complete kit, which also includes bump stops. They claim not to add any additional height, which is a plus for my situation.

Hi @Squatch
Did you end up tacking this mod? Which product you went with?

 

[Squatch]

Glad to see you back, @Jorge Bolivar. Haven't heard much from you in quite a while. Hope all is well with you. I ended up with the Ballistic Fabrication perches, but have yet to mount them. "Life" has kept me out of the garage, and I haven't touched my TJ in over a year. However, things are looking up, and I'm hoping to get those perches mounted soon.

 

[Jorge Bolivar]

@Squatch
Yes all is well, I just have been out social media and forums for a time been focused on other projects that required lots of software programming.
I hope you are doing well and safe and can return to your TJ soon.
I get a new LJ frame after sell the original w long arms and tons, doing different setup and just relocate the spring perches and recall this thread of yours.