correct size shocks for 3.5" lift? - JeepForum.com

 
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post #1 of 11 Old 01-02-2012, 12:49 PM Thread Starter
89blkcomanche
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correct size shocks for 3.5" lift?

so before people give me crap, i did search and never found a definitive answer some say get the 2-3" some say 4" will botom out so...im doing the F>R swap, and i need to find out what CORRECT size shocks i need. most companies are 2-3" or 4" lift shocks, so are 2-3" going to be "good enough" and work but wont have the travel and max out to quick, or are 4" going to bottom out to easily. so im asking you what brand shock are you running with your F>R swap also how is the ride quality and such

front my findings the most popular ones are:
rough country- some people said ride quality is to rough though
black diamond- more towards a better ride
skyjacker- same stiffer ride

im looking for some affordable shocks, cheaper would be prefered but i dont have a problem paying more for a better product

share your opinions of brands


93' ZJ 4.0l 4x4 auto, trail rig, 6 kc's, green and gray, 3.73 swap, 32x11.50 bfg mudd terrain
89' comanche, 2.5L 80k original miles, single stage paint- sold
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post #2 of 11 Old 01-02-2012, 12:53 PM
blackjack12982
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You need to measure for shocks, buying an off the shelf manufacturer's "length" shock is just going to lead to shocks either being too long or too short. Depending on how much bumpstop you've added or the flex you've limited determines the shock length.

I'll continue to throw all my shock support with Bilstein. I had crappy OEM shocks on my ZJ initially, switched to Bilstein's with my BB, had Skycrapper's when I went with 5.5", now switched back to Bilstein's. They're amazing, and they're support matches it as well.
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post #3 of 11 Old 01-02-2012, 02:31 PM
Technohead
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I completely agree with what he said.

When measuring for the correct shock length (after the lift is installed) you should also take into account the location of the bump stops and length of limit straps (if you use them).

You do plan to lower your bump stops, correct?
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post #4 of 11 Old 01-02-2012, 03:00 PM Thread Starter
89blkcomanche
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Quote:
Originally Posted by Technohead View Post
I completely agree with what he said.

When measuring for the correct shock length (after the lift is installed) you should also take into account the location of the bump stops and length of limit straps (if you use them).

You do plan to lower your bump stops, correct?
yes i do plan to extend them, im assuming i should do that before i get some shocks that way i can see what my low side of travel will be?

93' ZJ 4.0l 4x4 auto, trail rig, 6 kc's, green and gray, 3.73 swap, 32x11.50 bfg mudd terrain
89' comanche, 2.5L 80k original miles, single stage paint- sold
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post #5 of 11 Old 01-02-2012, 03:02 PM
blackjack12982
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Quote:
Originally Posted by 89blkcomanche View Post
yes i do plan to extend them, im assuming i should do that before i get some shocks that way i can see what my low side of travel will be?
Yes, you need to cycle the suspension, and place the bumpstops before measuring for shocks.
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post #6 of 11 Old 01-03-2012, 12:18 AM Thread Starter
89blkcomanche
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Quote:
Originally Posted by blackjack12982 View Post
Yes, you need to cycle the suspension, and place the bumpstops before measuring for shocks.
is there a standardized bump stop size increase, as in if you have a 3.5" lift you should extend the bump-stop that much? or half that for articulation?

93' ZJ 4.0l 4x4 auto, trail rig, 6 kc's, green and gray, 3.73 swap, 32x11.50 bfg mudd terrain
89' comanche, 2.5L 80k original miles, single stage paint- sold
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post #7 of 11 Old 01-04-2012, 01:47 PM Thread Starter
89blkcomanche
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what is everyone else runing for the F>R swap?

93' ZJ 4.0l 4x4 auto, trail rig, 6 kc's, green and gray, 3.73 swap, 32x11.50 bfg mudd terrain
89' comanche, 2.5L 80k original miles, single stage paint- sold
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post #8 of 11 Old 03-16-2012, 01:27 PM
baldygo
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also trying to find answers to these Questions
im thinking of going with V8 front coils to my I6 rear cause im looking to replace the rear rusted shocks that are on now but not sure about shock length with the uptravel and what not
i have new front shocks but the guy i got them from when i got the jeep(skyjacker sales man!) he ordered all 4 the same size so i put the front on and left the rear alone till now
i have a 3" teraflex with jks acos up front and all lower control arms
trying to improve ride off/on road
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post #9 of 11 Old 03-16-2012, 01:31 PM
gabrod72
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Quote:
Originally Posted by 89blkcomanche View Post
what is everyone else runing for the F>R swap?
This is irrelevant. Problem is you don't know what you're going to get on a F>R swap until after you do it. Remember these springs are old, worn out and have varied levels of miles on them... that alone should convince you that any answer given about shock length will be a guide only. Your solution may end up being different.
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post #10 of 11 Old 03-16-2012, 01:48 PM
JohnnyZJ
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for a point of reference......... the RC shocks that came with their 4" kit for me were all 26" extended.

bilstein lists a 6" lift shock for a ZJ @ 26" extended as well.

rubicon express BB shocks are 24" extended
stock are 21"

measure and go from there

i'm running 26"extended in the rear and 28" up front. fronts are a little long, rears could be longer.... lift is 5"

07' JKUR rollin on 35s
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post #11 of 11 Old 06-14-2012, 02:36 PM
ahoyt653
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I was looking for the same info, I have the 3.5" F-R swap kit from Rough Country and am looking to replace the shocks. The shocks that came with the kit fit good but perform badly. I called them up and got the sizes

Front - 24.5 extended 14.5 collapsed
Rear - 26 Extended 15.5 collapsed
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