New Bilstein 5100s too squishy - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 04-07-2012, 10:45 AM   #1
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
New Bilstein 5100s too squishy

I installed 4 new shocks 2 Weeks ago and my new shocks don't feel much different from the stock shocks that I replaced. Front feels fine. Rear shocks feels like they bottom out on the smallest of bumps. At first, they were stiff enough, but quickly changed. This weekend, I loaded the Jeep with winter camping gear, and the Jeep is bottoming out on the smallest of bumps.

I have no lift, no winch, 31x 10.5s.

Thoughts? Suggestions? Would adding a budget boost potentially help? How about a 1"body lift?

Alaska TJ is offline   Quote Quick Reply
Old 04-07-2012, 12:01 PM   #2
Jeeper
 
Join Date: Dec 2011
Posts: 611
The budget boost with bumpstops may help a bit. I don't know, but aren't the 5100s supposed to be for lifted jeeps? That would explain why they bottom out, they're longer than stock.. Just a thought.

I-Want-A-Jeep is offline   Quote Quick Reply
Old 04-07-2012, 12:03 PM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,116
Images: 2
Did they ship you the right length shocks? This is the first time I've ever read anyone complaining their Bilstein 5100 shocks were too soft and allowing things to bottom out. I'm suspicious they may simply be too long.

A photo posted here of the rear shocks showing how much of the chromed shaft is showing will quickly confirm if they are too long.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 04-09-2012, 12:50 PM   #4
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
I ordered from 4wd.com. I talked to the sales rep about the appropriate length and ordered the size that was designed for jeeps with a "0-2" lift". I'll have to remove the shock boot to get a photo that will show anything useful. I will try to do that this week sometime. How much of the chrome shaft should be showing on the rear?
Alaska TJ is offline   Quote Quick Reply
Old 04-10-2012, 11:06 PM   #5
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
Bilstein 5100 model # 24-186827 on the rear... You can see it in the attached photo. There is 4.5 inches of shaft showing.

Click image for larger version

Name:	ForumRunner_20120410_190449.jpg
Views:	601
Size:	122.1 KB
ID:	112848
Alaska TJ is offline   Quote Quick Reply
Old 04-11-2012, 10:03 AM   #6
Jeeper
 
colorubi's Avatar
 
Join Date: Jun 2011
Location: Longmont CO
Posts: 206
Are you sure the suspension is bottoming? You might put some clay or tape over the suspension bumper and check that it is in fact bottoming. You could have something hitting like an exhaust pipe or tracking bar. After I did a 3" lift, I had the track bar hit on the fuel tank mounting bolt when in compression. I thought I was bottoming, but the track bar end was wacking the stud that mounts the tank.
Good luck finding the trouble.
colorubi is online now   Quote Quick Reply
Old 04-11-2012, 10:39 AM   #7
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
I guess that it is more like 3.75"of potential travel before bottoming out on the shaft. is this typical for a Jeep with no lift?

I guess that I don't really know that I am not hitting my bump stops. If I am, I would be rather disappointed that the shocks are soft enough to let that happen so easily when driving down the road.
Alaska TJ is offline   Quote Quick Reply
Old 04-11-2012, 10:59 AM   #8
Jeeper
 
Imped's Avatar
 
Join Date: Jan 2011
Location: Indy
Posts: 3,282
Bilstein 5100's should be anything but soft....with that said, your springs support the weight, not the shocks. If you've got stock springs, they're soft and likely worn so some higher rate springs are what you need. Gas-charged shocks can only do so much. Also, going by your picture, you've got them upside down. This shouldn't make much of a difference with those shocks but I've always ran shaft-down. Could give that a shot.
__________________
Daily Driver Rock Rig
IndyORV
Imped is offline   Quote Quick Reply
Old 04-12-2012, 12:07 AM   #9
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
Imped, I was also very surprised that these shocks felt soft and were allowing anything to "bottom out" on the dippty-doos that we have all over Alaska (damn the degrading permafrost under the roads).

You suggest new springs might be the fix. I am wondering that if these shocks are appropriate for Wranglers with lifts from 0 to 2 inches, does that mean that the shaft is a little long and that I might alleviate my problem by installing a 1 inch budget boost? I'd rather the Jeep just be issue free without adding a boost, but is that one potential fix? Are new springs also a potential fix, or will I still need a boost after getting new springs? Is a boost the cheap way to go and follow that up with new springs?

Oh, I think that the shocks are installed as Bilstein intended them since they came with the top mounts pre-installed.
Alaska TJ is offline   Quote Quick Reply
Old 04-12-2012, 08:24 AM   #10
Jeeper
 
Imped's Avatar
 
Join Date: Jan 2011
Location: Indy
Posts: 3,282
That should be very easy for you to figure out. What bottoms out first, the bump stops or the the shocks?
__________________
Daily Driver Rock Rig
IndyORV
Imped is offline   Quote Quick Reply
Old 04-13-2012, 12:41 AM   #11
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
I am not certain how to tell which is bottoming out. I need to put something on the bumpstop and see if it gets imprinted when it hits, right?
Alaska TJ is offline   Quote Quick Reply
Old 04-13-2012, 06:15 AM   #12
Jeeper
 
Racer38's Avatar
 
Join Date: Mar 2012
Posts: 173
Put a plastic wire tire on the shaft of the shock and slide it down to top of the shock body, then you will be able to see how much travel of the shock you are using. It needs to be on there pretty snug.
__________________
Craig
2005 TJ, 4" Clayton Short Arm Suspension, Clayton Full Skids and Tummy Tuck, 1.25 Body, 1" MM Lift, 35 x 12.5 GoodYear MT/R, Smittybilt 10K H2O, 4:56 Gears, ARB Front D44, OX Locker Rear D44.
Racer38 is offline   Quote Quick Reply
Old 04-13-2012, 08:28 AM   #13
Jeeper
 
Imped's Avatar
 
Join Date: Jan 2011
Location: Indy
Posts: 3,282
Quote:
Originally Posted by Alaska TJ View Post
I am not certain how to tell which is bottoming out. I need to put something on the bumpstop and see if it gets imprinted when it hits, right?
No.....

Pull the springs and cycle the axle......

Or, take a tape measure and compare the distance between the upper and lower bump stop pads to the exposed length of shock piston. Just use some common sense.

Judging by your picture, you're OK in that department. But don't take my word for it, figure it out for yourself. Like I said earlier, it would be worth your time to turn the shocks the other way.
__________________
Daily Driver Rock Rig
IndyORV
Imped is offline   Quote Quick Reply
Old 04-13-2012, 09:25 AM   #14
Jeeper
 
Join Date: Mar 2012
Posts: 404
Just wrap duct tape around the shaft near the can at ride height then go for a ride where it bottoms out. Check duct tape. If it's all the way up to the top of the shock mount, the shocks are too long. Or simple go flex it out on a hill, park it, and take a peak at the stuffed side and see what's touching, rubbers or shocks. I believe the 5100's are either 1 or 2 inches longer than stock. I can't find stock shock length measurements so I can't be exact at this time. I run the 5100's on my xj and they are incredible. I run the HD yellows on my stock TJ and they are also great BUT my springs are kinda old and soft so it leans, sags, nose dives alot.

Here are the measurements for the 0-2 5100's in case someone knows the stock shock lengths:

Front:
Descriptor: Front Lifted Height: 0-2"
*Collapsed Length (IN): 13.06
*Extended Length (IN): 21.18

Rear:
Descriptor: Rear Lifted Height: 0-2"
*Collapsed Length (IN): 12.81
*Extended Length (IN): 20.08

Perhaps your stock coils are worn also and in need of being replaced. Here's a very popular spring that's used with 5100's and only nets about an inch:

H&R Sport Spring Set

You are better off with newer springs since they will assist in handling your gear that you haul around. Stock springs are too soft and worse when they age.

I'm gonna go with those very soon but got other priorities to do first....
Muddeprived is offline   Quote Quick Reply
Old 04-14-2012, 11:18 AM   #15
Jeeper
 
Alaska TJ's Avatar
 
Join Date: Aug 2010
Location: Fairbanks, Alaska
Posts: 168
Confirmed. Shocks are bottoming out, although I may be hitting bump stops at same time. Need to measure when the slushy mess dries up from my drive way.

I am considering getting a set of shocks from an 2008 Rubicon. Supposed to be quite new and cheap too.
Alaska TJ is offline   Quote Quick Reply
Old 04-14-2012, 11:47 AM   #16
Jeeper
 
Join Date: Mar 2012
Posts: 404
Quote:
Originally Posted by Alaska TJ View Post
Confirmed. Shocks are bottoming out, although I may be hitting bump stops at same time. Need to measure when the slushy mess dries up from my drive way.

I am considering getting a set of shocks from an 2008 Rubicon. Supposed to be quite new and cheap too.
If it's a soft bottom-out, then it's the bumpstops. If it's a "bang" type bottom-out, then most likely the the shocks.

I would seriously look into replacing your springs. If they are old and soft then it's best to replace em or else you'd have the same issue with the next pair of shocks unless they are very stiffly valved.
Muddeprived is offline   Quote Quick Reply
Old 04-14-2012, 11:50 AM   #17
ESP
Jeeper
 
ESP's Avatar
 
Join Date: Jun 2010
Location: NC
Posts: 11,512
Quote:
Originally Posted by Jerry Bransford View Post
Did they ship you the right length shocks? This is the first time I've ever read anyone complaining their Bilstein 5100 shocks were too soft and allowing things to bottom out. I'm suspicious they may simply be too long.

A photo posted here of the rear shocks showing how much of the chromed shaft is showing will quickly confirm if they are too long.
Didn't read all the post but I agree with Jerry. This would be the first time I've heard that they are too soft. Most say they are the opposite and provide a much stiffer ride.
__________________
98 XJ 02 TJ 10 JK 13 JK

2013 JK - Lifted w/ 35s - Bilstein 5100s - Monster TB - Chopped Flares - Can't Keep It Clean
ESP is offline   Quote Quick Reply
Old 04-14-2012, 12:03 PM   #18
Jeeper
 
Join Date: Mar 2012
Posts: 404
How about a side-view picture of your jeep so we can see if the springs are sagging too?
Muddeprived is offline   Quote Quick Reply
Old 08-01-2012, 08:58 AM   #19
Jeeper
 
Join Date: Dec 2009
Posts: 184
Quote:
Originally Posted by Muddeprived View Post
If it's a soft bottom-out, then it's the bumpstops. If it's a "bang" type bottom-out, then most likely the the shocks.

I would seriously look into replacing your springs. If they are old and soft then it's best to replace em or else you'd have the same issue with the next pair of shocks unless they are very stiffly valved.
Have a '97 2.5. auto with 160K miles, originally with soft top now with hard top. Totally stock wheels and height on original springs. Shocks now are Monroe Sensatrack. I ordered Bilstein 5100 for stock 0" lift.

How can you tell if your springs are worn out? I thought about installing the +1" H&R springs since I will be replacing the shocks since my original springs have 160K miles on them?

I also need to replace a missing bump-stop. Dealer wants $60 for it. Any other options? I herd the JK stops are the same. I will try to see if any JK owner has their original stops if they did an lift kit. Anything aftermarket?
autopc25 is offline   Quote Quick Reply
Old 08-01-2012, 09:06 AM   #20
Jeeper
 
Wench's Avatar
 
Join Date: May 2010
Location: Lincolnton, NC
Posts: 475
Send a message via AIM to Wench
stupid question but i figured id ask...do you have an aftermarket rear diff cover? We put somes new softer shocks on my dads jeep and he thought it was bottoming out but come to find out it was the larger diff guard hitting up against the fuel tank skid....
__________________
You can lock it..even put a different t/c in it..but its still not a RUBICON!
Wench is offline   Quote Quick Reply
Old 08-01-2012, 09:15 AM   #21
Jeeper
 
Join Date: Mar 2012
Posts: 404
Quote:
Originally Posted by autopc25 View Post
Have a '97 2.5. auto with 160K miles, originally with soft top now with hard top. Totally stock wheels and height on original springs. Shocks now are Monroe Sensatrack. I ordered Bilstein 5100 for stock 0" lift.

How can you tell if your springs are worn out? I thought about installing the +1" H&R springs since I will be replacing the shocks since my original springs have 160K miles on them?

I also need to replace a missing bump-stop. Dealer wants $60 for it. Any other options? I herd the JK stops are the same. I will try to see if any JK owner has their original stops if they did an lift kit. Anything aftermarket?
They are probably tired springs but you'd have to get factory ride height measurements to determine if they are sagging. I would go with the H&R springs because it seems to be a great combo from what I've read. I got plans for it real soon.

Just go to a junkyard and pull some rubber bumpstops. They would prob be like $1-$5 a piece. D A V E Y S J E E P S . C O M - Specializing in Jeeps & Jeep Parts is located in ohio and they ship so you could ask him. I get all my jeep stuff from that place.
Muddeprived is offline   Quote Quick Reply
Old 08-01-2012, 09:59 AM   #22
Jeeper
 
Join Date: Dec 2009
Posts: 184
Quote:
Originally Posted by Muddeprived View Post
They are probably tired springs but you'd have to get factory ride height measurements to determine if they are sagging. I would go with the H&R springs because it seems to be a great combo from what I've read. I got plans for it real soon.

Just go to a junkyard and pull some rubber bumpstops. They would prob be like $1-$5 a piece. D A V E Y S J E E P S . C O M - Specializing in Jeeps & Jeep Parts is located in ohio and they ship so you could ask him. I get all my jeep stuff from that place.
With 160K miles on my springs I am leaning towards replacing with the +1" H&R springs now. My only real concern is what they are rated for? 4.0 or 2.5? My TJ has the 2.5L which is lighter?

I will measure my ride height today. Any idea what it should be for a 2.5 with auto and hard top?

I pulled my factory build sheet. My TJ was originally equipped with a soft top only. I have a hard top on it now and that is what I usually have on it now which is heavier. Do I have to worry about uneven ride height because the front is lighter with a 2.5 and the back is heavier with the hard top?

Here is my factory build sheet codes for my suspension.

SDAP-normal duty suspension
ZAEP- LF spring
ZAUP- LR spring
ZNEP- RF spring
ZNUP- RR spring

A forum member offered me stops. I will call Davys Jeeps if that does not work out.

Thanks
autopc25 is offline   Quote Quick Reply
Old 08-01-2012, 10:48 AM   #23
Jeeper
 
Join Date: Jan 2009
Location: South Jersey
Posts: 923
If you insist on staying stock height look for a set of springs from a Rubicon. They are no taller but are stiffer and are plentifull and cheap Although another inch taller would probably help out the rear shocks as far as length but not by way of a spacer , new springs . .

__________________
05 TJ Rubicon 4.88s ,2" BDS, Bilstein 5100, Currie Currectlync , Savvy arms/Metalcloak Duroflex joints, JKS BL, 33"Cooper STT's, Mc front Track Bar
Gary2 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
New Jeep owner from GA David-B WF New Member Check In 8 04-09-2012 05:07 AM
Hi Everyone!, New Jeeper in TX JaredW WF New Member Check In 13 04-09-2012 05:02 AM
New to the group Thegr8kim WF New Member Check In 11 04-09-2012 04:49 AM
Like new Abikux YJ General Discussion Forum 4 04-07-2012 11:15 AM
YJ Ring and Pinion (New Member) Filipests YJ Tech Forum 0 04-07-2012 08:49 AM



Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 09:23 PM.



Jeep«, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC