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Old 01-09-2012, 07:51 AM   #1
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suspension travel / bump stop question...

after putting new springs/shocks on, i noticed the shocks look like they are compressed more then they should be.

whats the best solution for this. coil spring spacer? extended bump stop? or both?

thanks!



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Old 01-09-2012, 07:55 AM   #2
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coil spacers will make things worse. you need bumpstop extensions, looks like 2" or so.

read these:
http://www.wranglerforum.com/f5/trac...ml#post1892010
http://www.wranglerforum.com/f5/corr...gth-70047.html

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Old 01-09-2012, 08:36 AM   #3
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thanks. just read through the second link.

so adding a 1-1 1/2'' spacer for better wheel clearance, along with longer bumpstops isnt a good idea?
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Old 01-09-2012, 09:06 AM   #4
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Originally Posted by TJ.jim View Post
thanks. just read through the second link.

so adding a 1-1 1/2'' spacer for better wheel clearance, along with longer bumpstops isnt a good idea?
no. wheel clearance is accomplished by properly setting the bumpstops or relocating the fender line (highline or BL). also, learn about something called coil bind, which damages your coils due to overcompression.
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Old 01-09-2012, 09:38 AM   #5
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gotcha. thanks for the info
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Old 01-09-2012, 02:14 PM   #6
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wait.

so how would a properly bump stopped spring with a spacer on top be more prone to coil bind then one without?
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Old 01-09-2012, 02:41 PM   #7
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wait.

so how would a properly bump stopped spring with a spacer on top be more prone to coil bind then one without?
spacers reduce the amount of space the spring has to compress into. most lift coils are at full bind within the stock towers length, or actually need more space...more specifically it depends on the coil diameter, the amount of "turns" and the coil length.

So, if you wanted to get really precise about it, you would put your current lift coils into a press and subject them to full coil bind. Then you'd measure this distance and make sure the distance was available to compress the coils into. here's a write up on that: Yellow, Red, Long and Soft.... - JeepForum.com

Also, if you added 2" coil spacers to 4" of lift, you'll need new shocks because you'll have 2"+4" = 6" of lift, so you'll need 6" lift shocks, in addition to more bumpstop. But the 4" coils won't be long enough when at full droop, so the springs will unseat under droop - which will make them basically useless from a traction and rig stability standpoint.
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Old 01-09-2012, 03:08 PM   #8
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i was actually thinking of just 1"ers. still a no go though, huh?

but i do appreciate your time and and your willingness to help out. thanks!
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Old 01-09-2012, 03:20 PM   #9
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i was actually thinking of just 1"ers. still a no go though, huh?
theres no point - it won't get you anything.

you need to extend the bumpstops to prevent the shocks from bottoming out - both front and rear. after thats done, re-evaluate if your tires are rubbing the fenders (the steel, not the flare). if they are, then either extend the bumpstops more, add a 1" BL, or get smaller tires.
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Old 01-09-2012, 03:30 PM   #10
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got it. thanks again.

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