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Old 06-18-2007, 05:48 PM   #1
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Installed a long arm and the ride is rough

I had a Fabtech long arm lift installed about 2 months ago and the ride was very harsh when I got it back on the road. I did air the new tires down to a more appropiate air pressure which help a bit. I have loaded the jeep up very heavy more than a dozen times. I think I gave the springs enought time to break in. The jeep rides better when I put about 500 lbs of weight in it. I thought that a long arm kit would approve the ride quality, was I wrong to think that? The shop that installed the lift has been in business for a long time in this area and they specialize in suspension systems for all types of vehicles. Does anyone have any suggestions?

I drive a 97 TJ Sport with 35's

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Old 06-18-2007, 06:01 PM   #2
coilovers are damn flexy
 
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I would think that your shocks would have a lot to do with the ride quality, as well. What shocks did they install?

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Old 06-18-2007, 06:28 PM   #3
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Wha pressure are you running the tires are currently? I usually run my XJ's at 26psi
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Old 06-18-2007, 07:23 PM   #4
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I have to agree with the two above suggestions. I'd first guess they installed some really stiff shocks, do you know what they are? And hopefully the tire jockey didn't air the tire pressures up to the air pressure on the sidewall which plenty do out of pure ignorance. For radial 35" tires, 26-28 psi is about right for the street.
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Old 06-18-2007, 07:53 PM   #5
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x2
i thing you have to much pressure in your tires.

a buddy has a 6" fabtech longarm lift with coilovers and the shocks that came with the lift.
it rides very soft and comfortable.
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Old 06-18-2007, 08:14 PM   #6
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x3 shocks and tire press.
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Old 06-18-2007, 08:18 PM   #7
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yes. when i got my 32s my jeep had a very stiff and uncomfortable ride. they really put 42 psi in the tires...now with 28 psi it rides much better.
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Old 06-18-2007, 09:04 PM   #8
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Quote:
Originally Posted by nicolas-eric View Post
yes. when i got my 32s my jeep had a very stiff and uncomfortable ride. they really put 42 psi in the tires...now with 28 psi it rides much better.
when i bought my tj.. dealership put on 40 also.. pos man..

my old car.. miata.. the front tires and one of the rears had 40s and the other rear had 60ish.. tire pressure makes huge difference.

what pressure you got? A tire pressure gauge is good thing to invest 2 bucks in choose a good one so you wouldnt have to buy one later. I got a round analog one instead of the pipe looking ones that fly out.
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Old 07-11-2007, 01:01 PM   #9
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Tires are at 28psi and the shocks are Fabtech gas mono shocks
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Old 07-11-2007, 01:10 PM   #10
coilovers are damn flexy
 
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If I am not mistaken, gas shocks are less forgiving, than oil filled shocks. Not much give, in the gas shocks.
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Old 07-11-2007, 01:13 PM   #11
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when i bought my tj.. dealership put on 40 also.. pos man..

my old car.. miata.. the front tires and one of the rears had 40s and the other rear had 60ish.. tire pressure makes huge difference.

what pressure you got? A tire pressure gauge is good thing to invest 2 bucks in choose a good one so you wouldnt have to buy one later. I got a round analog one instead of the pipe looking ones that fly out.
I invested in a round one from auto-zone. It has rubber around the outside and its tread is just like a tire. Keep it in my console at all times. =D

Tire pressure is key to a good ride.

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Old 07-11-2007, 04:32 PM   #12
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Another thing to check - Make sure that your control arms have all been greased really well, I made the mistake of not doing that after the kit was on, :chair: and mine rode like a tank until I greased everything, then it rode better than stock. I am also running the Rancho 9000 shocks with mine, so that will help also.
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Old 07-11-2007, 06:20 PM   #13
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I've been told that with the right set-up, your Jeep will ride better than stock. If they're a reputable company, they wouldn't sell you a bad kit w/o warning you first. Tire pressure is key to it I think. I check the pressure regularly on my bike, because if I don't and it's too soft or too hard it will throw everything off. Same with my Jeep. The bigger tires run less pressure and hold up pretty nice. And for going off road I've heard of dropping down to even 8psi. But I wouldn't try that for road use. Besides, checking and adjusting the pressure is the easiest thing to do to check your rigs set up.
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Old 07-11-2007, 07:56 PM   #14
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Ride quality means usually two things: handling, or shock absorption. A long arm tends to make your Jeep track and handle better - ESPECIALLY on the highway (My half (lowers only) long arm made a WORLD of difference here). Shocks tends to get rid of the bumpiness. Yes a long arm should be less bumpy because of the reduced angles, however it also has a bit more unsprung weight than short arms so it doesn't help too much here.

Get yourself some good shocks such as Bilsteins 5100s (or 5150s), RE monotubes, or I hear the OME's ride nice too but I don't have experience with em. The whitey twin tube shocks SUCK for the most part.
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Old 07-11-2007, 08:44 PM   #15
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Any one has any blueprints of making your own control arms?
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Old 07-11-2007, 10:35 PM   #16
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I'm going to be getting the Rock Krawler long arm 4in kit in a couple months, how are the shocks that come with that kit?
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Old 07-12-2007, 12:49 PM   #17
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Quote:
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I'm going to be getting the Rock Krawler long arm 4in kit in a couple months, how are the shocks that come with that kit?
They aren't bad. They might be a little stiffer than some and they aren't Rancho 9000's, but they are good shocks.

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