|Yesterday 05:52 PM|
|CoyRoberson||That will work. Thanks!!|
|Yesterday 05:48 PM|
I don't know. Here's the part number for the stock jounces. Google it and buy four of them.
|Yesterday 05:45 PM|
|CoyRoberson||Yea yea.... So, what is the size of the stock jounce? The kit came with the 2" extension for the metal cup. I just threw out the old jounce|
|Yesterday 05:43 PM|
The answer to the question you didn't quite ask is that you should use stock jounces. Then you need to either move the steel cup down the appropriate amount or you need to add a puck/spacer to the lower spring pad inside the coil.
Steel cup against the lower pad is what you care about. The jounce is just a shock absorber.
|Yesterday 05:31 PM|
|CoyRoberson||Yea, the jounce bumper. Ive always heard them called bump stops.|
|Yesterday 05:28 PM|
|Yesterday 05:25 PM|
|CoyRoberson||When I put my lift on, I had to pull out my old bump stops and they were falling apart. Not even worth putting back in. It came with a 2" extension and i was supposed to put the stock bump stops back on.|
|Yesterday 05:21 PM|
|Yesterday 05:16 PM|
|CoyRoberson||Does anyone know the size of the stock bump stops?|
|Yesterday 03:38 PM|
|11-29-2014 05:18 PM|
|11-29-2014 01:49 AM|
|SnowyJk||Hey, so I just installed a 2.5RE lift on a 2dr but I'm only running 275/65/16(31.6") tires. When I'm driving over a big hole, my rear bottoms out. I was assuming that's a bump stop problem considering I have such small tires. Yay/nay?|
|11-16-2014 01:02 AM|
|11-16-2014 12:39 AM|
Take a Look at this thread.
Adding new shocks, Bump stop length? [Archive] - JKowners.com : Jeep Wrangler JK Forum
|11-15-2014 07:50 PM|
So i was in the market of getting a 2.5" RK lift for my 2014 Jeep Wrangler Unlimited Sport and on there site it shows the recommended bumpstop to get for the bilstein 5100. Now not knowing much about it i searched on google and came to this thread and was wondering if this is still true today?
Front - 24-186872 - Extented: 27.56" Collapsed: 16.41"
Rear - 33-186887 - Extented: 27.36" Collapsed:16.96"
Front - FOX-980-24-641 - Extented: 28.625" Collapsed: 18.00"
Rear- FOX-980-24-642 - Extented: 27.50" Collapsed: 17.125"
Now on RK site it says to have a 3" bumbstop for the front and rear for the Bilstein 5100, but when i use the numbers the fronts come out to 2.91". And after reading what was said in this thread that the 3" bumbstop would be fine. Now looking at the rear they also say a 3" bumbstop, But again checking the numbers it comes out to 4.71". Looks like i would need bigger bumbstops in the rear. This is where i was confused with the Bilstein 5100 shocks.
Now with the Fox 2.0 shocks it looks like i would need to get 5.75" bumbstops for the front, and the rears should be 4.875".
Am i doing this right or did i not understand this correctly? Thanks for the help.
Edit: Just saw this was for a TJ. Would these bumbstops still apply to a JK? If not where could i find that information? Thanks...
|08-09-2014 11:27 PM|
after all that your limiting factor will likely be the springs and/or control arms - depending on your travel expectations. If you're unseating the springs, the travel is essentially useless. Also, at some point the control arms & track bar become problematic...short arms tend to "steer" the axle when flexed. You can easily run out of the travel at the front single shear frame end track bar bracket. You also bind the axle side mount, so that needs modified. Similarly, you eventually bind the rear brackets.
Generally, these types of shock modifications are part of a full suspension redesign - custom mid/long arms & brackets to dial in geometry, custom track bars & mounts, axle swaps, aftermarket spring perches, etc. You also need travel limitation on the extended end too - limit straps.
Just doing big travel with stock parts doesn't complete the package. The goal is make this stuff all work together. That discussion is well beyond the scope of this thread, and even this forum. That discussion belongs on pirate, or JF to some degree.
|08-09-2014 01:54 PM|
Such as in these threads?
Ford f-150 shock towers up front- Mini write-up - JeepForum.com
Outboarded rear shocks: Done. - JeepForum.com
Is there a thread or any info that you'd recommend that will help decide what's the maximum travel shock I can then fit taking into account moving shock mounts? What's my next limit given body lift and highline fenders. I'm thinking will be body/fender again at that point.
|08-08-2014 11:51 AM|
|08-08-2014 11:40 AM|
Given what I've read and what I can understand after reading through this thread twice. I'll have to bumpstop to prevent overtravel in upwards motion to prevent shock damage. Should I then pick a shock that allows for more droop so that I'm keep up my full travel just more of it will be down travel? Or as you state relocate shocks for more uptravel, and is this part of the purpose of many people outboarding their shocks? My research shows that its a bit difficult on the rear axle I run ford 8.8 due to less width.
Thanks for your help, read a couple of your threads definitely help make concepts more understandable.
|08-08-2014 07:44 AM|
|08-08-2014 07:36 AM|
The more I read these posts, the happier it makes me that I'm putting together my own lift. I have 2" BDS coils on order, I skipped their 5500 shocks and buying bilstein 5100 shocks. Is there a way to help decide collapsed shock length? The length based on info in this thread seems 13.5 front and 12.5 rear. Sound about right?
I have 1.25 JKS BL, 1" brown dog ML, metalcloak fenders, and I'll fitting 35" BFG KM2's.
|05-21-2014 01:55 PM|
Here is what my front looks like.
The puck started out being 3" thick. For my Jeep, I trimmed it down to 1 3/8" on a table saw.
|05-21-2014 07:52 AM|
you're making these things. "they" is YOU!
|05-20-2014 09:22 PM|
|retlcd||And to go one step further, the fronts would only need .42 ???? don't think they make them that small. I am really confused with this|
|05-20-2014 09:03 PM|
To get even closer, buy some poly performance body lift pucks and cut them down to your desired size.
With all that said, you can do math but the proof is in the pudding as they say. Cycle your suspension and take your measurements at full bump. Jeeps are not exact from one to the other so your best bet is to just cycle it and then take your measurements.
|05-20-2014 08:56 PM|
|04-18-2014 09:33 PM|
|konadog||this is good information.|
|04-12-2014 09:13 AM|
but yes, you are correct in that you can run into a circumstance where the spring is fully compressed before the BS even does its job. That's called coil bind and it's bad...hence I don't like big spacers + springs.
Unfortunately its kind of hard to measure coil bind yourself because you need a press to fully compress the spring in order to measure it. Its easiest to relying on the manufacturer of the spring for this specification.
|04-12-2014 07:45 AM|
I have another question..
How much can the springs be compressed?
A friend hast 1.5" BS extensions in the rear and 2" springs with 1.5" spacers.
The spring would be fully compressed before the lower spring perch hits the jounce.
|04-11-2014 02:29 PM|
the primary reason you install a lift is to gain suspension travel. Why would you want to install a 2" lift, then install 2" BSE's to put you right back to stock travel?
but keep in mind, that's only considering shocks. you've still got to investigate other interferences issues, like tire size and other suspension components.
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