New Jeeper with shock issues - JeepForum.com
 
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post #1 of 14 Old 07-24-2015, 11:48 AM Thread Starter
AustinG
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Xj New Jeeper with shock issues

Hi guys I am a new Xj owner and am very excited to get my jeep trail ready and meet some new people. I am currently having an issue with choosing shocks right now and finding out what my rear Drive Shaft will handle for down travel before separating. I have put on a full new progressive leaf pack and shackle relocation bracket in the back and need new shocks. From the measurements I read I need a shock around 26" long a and it doesn't seem to matter for the compressed length because I will have to bumpstop way before that because of tire size...Will my drive shaft come out under high torque situations and also should I get a longer shock so I never have to deal with strapping it like these 5100 series (BIL24-185943) or how does that work? Thanks in advance for all advice, I know there is a ton of info on this topic but nothing concise and consistent.

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post #2 of 14 Old 07-24-2015, 01:11 PM
sAe23
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I like how you've only made one thread / post, but you have your profile already filled out
(And how you got JJ Abrams to take that picture! )

The rear suspension on an XJ is kind of self limiting...
With relocation brackets, the axle can droop a bit more that stock, so just make sure nothing else "bottoms out" before the springs do (brake lines / hoses, drive shaft, and...shocks).

One thing you left out was how much lift you have... I'm guessing 5-7"?
Bilstein doesn't have an "official XJ" shock for high lifts, but someone here found a good P/N that was long enough for high lifted XJs and had appropriate valving.
I'll see if I can find that post...
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post #3 of 14 Old 07-24-2015, 01:31 PM
Charley3
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I prefer Bilstein 5100, if you can find an appropriate length.

Warning: I often edit my posts a few times to get them complete or correct errors.
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post #4 of 14 Old 07-24-2015, 01:33 PM Thread Starter
AustinG
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@sae23 I figured if I want people to help I might as well give them all the information I have. I had to look up JJ Abrams but I guess Ill take that as a compliment

I have no idea how big the lift is but I would guess 6-7 inches. I don't have a preference on the company as long as it is a reputable shock company so anything that will work well is good for me.

I don't know what P/N is can you elaborate? Thanks for looking for that thread, does that longer bilstein not work for my application?

Jeeping since 2015...blowing money on toys since 1990
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post #5 of 14 Old 07-24-2015, 02:12 PM
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Austin: You were absolutely right about it helping, most guys just don't fill anything in.


sAE23, was the list you meant?

Shock Lengths



Brand/Model # Extended Collapsed Travel Position
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Napa 37083 (Stock) 21.2 13 8.2 Front
Monroe 32252 (* Stock) 21.25 13 8.1 Front
Monroe 37193 (* 1-3 “ Lift) 24.25 13.37 10.8 Front
Monroe 911524 (* UpCountry) 21.00 13.4 7.6 Front
Doetsch DT3350 ( 3-5” Lift) 26.5 15.5 11.0 Front
ES1000 ES124515 (* 3" Lift) 24.50 14.38 10.0 Front
ES1000 ES121515 (* 0-2" Lift) 21.52 12.72 8.8 Front
ES3000 ES324515 (* 3" Lift) 24.70 14.52 10.2 Front
ES3000 ES321515 (* 0-2" Lift) 20.24 12.45 7.8 Front
ES9000 ES921515 (* 0-2" Lift) 21.75 13.06 8.6 Front
ES9000 ES924515 (* 3" Lift) 24.70 14.52 10.2 Front
Skyjacker SJA-H7016 (* 1-3" Lift) 22.75 13.54 9.2 Front
Skyjacker SJA-H7025 (* 3-5" Lift) 24.75 14.54 10.2 Front
Skyjacker SJA-N8016 (* 1-3" Lift) 22.75 13.54 9.2 Front
Skyjacker SJA-N8025 (* 3-5" Lift) 24.75 14.54 10.2 Front
Skyjacker SJA-M9016 (* 1-3" Lift) 22.75 13.54 9.2 Front
Rancho RS5239 (* 3" Lift) 23.75 14.37 9.38 Front
Rancho RS5128 (* Stock) 20.87 13.00 7.8 Front
Rancho RS99239 (* 3" Lift) 23.75 14.37 9.38 Front
Rancho RS99128 (* Stock) 20.87 13.00 7.8 Front
Rancho RSX17317 (* 3" Lift) 23.75 14.50 9.25 Front
Rancho RSX13036 (* Stock) 20.50 12.87 7.6 Front
Bilstein F4-B46-1798 (Stock+Upcountry) 21.50 13.25 8.25 Front
Bilstein F4-BE5-6241-H8 (4” Lift)……………………………………….………….Front


Brand/Model # Extended Collapsed Travel Position
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NAPA 37027 (Stock) 20.0 12.8 7.2 Rear
Monroe 32269 (* Stock) 21.50 13.37 8.1 Rear
Monroe 37194 (* Upcountry) 21.12 13.87 7.2 Rear
Monroe 911525 (* Upcountry) 21.50 13.87 7.2 Rear
Monroe 37029 (1-3” Lift ) 23.00 14.375 8.6 Rear
Superlift SLF-85112 (* 2-4" Lift) 24.00 14.50 10 Rear
Superlift SLF-84140 (* 3-5" Lift) 26.07 15.57 10.5 Rear
Superlift SLF-85080 (* 0-2" Lift) 21.57 13.32 8.25 Rear
ES1000 ES124509 (* 3" Lift) 24.86 14.84 10 Rear
ES1000 ES121515 (* 0-2" Lift) 21.52 12.97 8.5 Rear
ES3000 ES324509 (* 3" Lift) 24.84 14.82 10 Rear
ES3000 ES322509 (* 0-2" Lift) 22.58 13.71 8.8 Rear
ES9000 ES922509 (* 0-2" Lift) 22.58 13.72 8.8 Rear
ES9000 ES924509 (* 3" Lift) 24.84 14.82 10 Rear
Skyjacker SJA-N8058 (* 3-5" Lift) 24.84 14.82 10 Rear
Skyjacker SKA-H7058 (* 3-5" Lift) 24.84 14.82 10 Rear
Doetsch DT-3000 (* 2" Lift) 22.50 13.50 9 Rear
Doetsch DT-3000 (* 4" Lift) 24.50 14.50 10 Rear
Doetsch DT-8000 (* 4" Lift) 24.50 14.50 10 Rear
Rancho RS5194 (* 2-3" Lift) 23.25 14.37 8.8 Rear
Rancho RS5259 (* Stock) 21.50 13.50 8 Rear
Rancho RSX13037 (* 0-2" Lift) 21.12 13.50 7.62 Rear
Bilstien F4-B46-1799 (Stock+UpCountry) 21.50 13.25 8.25 Rear
Bilstein F4-BE5-6686-H6 (4” Lift) …………………………………………….Rear

Lifted, Locked, Stiffened

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post #6 of 14 Old 07-24-2015, 02:14 PM
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As to the rear driveshaft separating, given your lift height and the part where the rear pinion is pointed directly in line with the shaft in the picture, I'm guess you've got an SYE. Those don't separate like the stock slip yokes do. They bottom out, but they don't separate.

Brake lines are often an issue with extreme droop. You should definitely make sure those can take all the flex you have before you worry about the shafts. Especially in the front.

Lifted, Locked, Stiffened

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post #7 of 14 Old 07-24-2015, 05:43 PM
sAe23
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Quote:
Originally Posted by AustinG View Post
@sae23 I figured if I want people to help I might as well give them all the information I have. I had to look up JJ Abrams but I guess Ill take that as a compliment

I have no idea how big the lift is but I would guess 6-7 inches. I don't have a preference on the company as long as it is a reputable shock company so anything that will work well is good for me.

I don't know what P/N is can you elaborate? Thanks for looking for that thread, does that longer bilstein not work for my application?
P/N = Part Number

If the fender flares are stock, measure from the center of the wheel hub to the bottom of the flare. Stock is 17.5" front, 17" rear. Anything above that is your lift height.

The "lens flare" in your picture is what I was alluding to.
Google "star trek lens flare".
It's kind of Abrams "thing"
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post #8 of 14 Old 07-24-2015, 05:47 PM
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Quote:
Originally Posted by bluejunior View Post
Austin: You were absolutely right about it helping, most guys just don't fill anything in.


sAE23, was the list you meant?

Shock Lengths


[snip]
No...somewhere there is a thread on shocks (OK, there are hundreds ) where someone found a good Bilstein shock for a lift height not usually supported by Bilstein, and with good valving. I just haven't had a chance to go through the "my replies" search function yet.
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post #9 of 14 Old 07-25-2015, 12:22 PM Thread Starter
AustinG
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Quote:
Originally Posted by bluejunior View Post
As to the rear driveshaft separating, given your lift height and the part where the rear pinion is pointed directly in line with the shaft in the picture, I'm guess you've got an SYE. Those don't separate like the stock slip yokes do. They bottom out, but they don't separate.

Brake lines are often an issue with extreme droop. You should definitely make sure those can take all the flex you have before you worry about the shafts. Especially in the front.
I am only worried about the driveshaft because at full doop the shaft only has about 3-4" left before it separates. I have done the brake lines already but will probably upgrade them to even longer now that they are towards their max once I do the brake booster.

When i measure the lift it looks like the measurement is 24" rear and 25 1/2" front. This is measured from the center of the wheel hub to the metal on the wheel well(fenders off).

Jeeping since 2015...blowing money on toys since 1990
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post #10 of 14 Old 07-25-2015, 01:03 PM
sAe23
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Quote:
Originally Posted by AustinG View Post
I am only worried about the driveshaft because at full doop the shaft only has about 3-4" left before it separates. I have done the brake lines already but will probably upgrade them to even longer now that they are towards their max once I do the brake booster.

When i measure the lift it looks like the measurement is 24" rear and 25 1/2" front. This is measured from the center of the wheel hub to the metal on the wheel well(fenders off).
Three to Four inches, or 3/4 of an inch?? If the former, don't worry about it.
Did you do the brake *hose* AND the (parking) brake cables?
If your fenders are off, measure from the top of the axle tube to the "frame rail". Front should be 6.75" +- .5" and the rear s/b 6" (same tolerance).
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post #11 of 14 Old 07-25-2015, 01:49 PM Thread Starter
AustinG
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Originally Posted by sAe23 View Post
Three to Four inches, or 3/4 of an inch?? If the former, don't worry about it.
Did you do the brake *hose* AND the (parking) brake cables?
If your fenders are off, measure from the top of the axle tube to the "frame rail". Front should be 6.75" +- .5" and the rear s/b 6" (same tolerance).
3"-4" If i really flex the hell out of it I could probably get it to 2" left over. The parking brake is completely disconnected at the moment, I keep forgetting to work on that, there goes another day of research. I will get that measurement today. Will the lift measurement help me get the proper shock length better than going out and flexing it to get the fully extended and fully compressed measurements? Thanks for the help!

Jeeping since 2015...blowing money on toys since 1990
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post #12 of 14 Old 07-25-2015, 03:46 PM Thread Starter
AustinG
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I just measured and the rear measured at 12" and front 13" from the top of the axle to the frame. I also took a better look at the rear driveshaft and just sitting in my garage it has about 2" left until it separates.

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post #13 of 14 Old 07-25-2015, 04:51 PM
sAe23
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Quote:
Originally Posted by AustinG View Post
3"-4" If i really flex the hell out of it I could probably get it to 2" left over. The parking brake is completely disconnected at the moment, I keep forgetting to work on that, there goes another day of research. I will get that measurement today. Will the lift measurement help me get the proper shock length better than going out and flexing it to get the fully extended and fully compressed measurements? Thanks for the help!
I'm not sure if it will work for YOUR year, but for ME, a pair of PASSENGER SIDE brake cables from a mid 90's YJ are the go-to replacement part.

As for the shocks, the usual thing is to ask for shocks for an XJ with X" lift, but Bilstein (and I don't know who else) do not MAKE a specific shock for an XJ lifted 6+", so knowing your max and min lengths is the way to go
And actually working the axles through their max stuff and droop will also ensure your hoses and cables aren't going to be your limiting factor
(And your bump stops are set right!)
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post #14 of 14 Old 07-25-2015, 10:41 PM
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You made me think. I still haven't filled in my profile, or if I did it's way out of date. I feel a tiny bit of shame now. Ha ha. I'll get to it someday soon after several in progress changes are made.

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