Best option to replace/fix a bent rear lower control arm - JeepForum.com
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post #1 of 29 Old 04-05-2013, 05:40 PM Thread Starter
Thunderstrike
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Best option to replace/fix a bent rear lower control arm

During rock crawling in Moab I had bent rear lower control arm (I have a stock suspension).

I am sure Jeep OEM part is quite expensive. It has a slight bent, so is this safe or okay to drive as is, or what affect will it have?

What would be the best replacement option, in terms of price and stronger lower control arm? Of course, I would buy a pair.

Bent left control arm.



Right side normal.



2009 JK Rubicon (Former Daily Driver); 2014 VW Jetta GLI Autobahn w NAV.
Auto, Power, Remote Start, Towing Package, MyGig Navigation with Lockpick, Rear View Camera, B&M 70268 Transmission Cooler, Aeroforce Interceptor, Valentine 1, Tub Sound-Deadened with Raamat and Ensolite, Hard Top Heat Insulated with 1/2" Styrofoam Insulation, Bilstein Shocks Front & Rear, PIAA Dual Horns, IPF 920H4 Headlights.
Protection: Skid Row Engine Skid, Lower Control Arm skid & Evaporator Skid; Rock Hard Gas Tank Skid; Warn Stainless Steel Differential Skid Front & Rear.
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post #2 of 29 Old 04-05-2013, 05:46 PM
SoK66
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Many take offs available out there from rig builds that are on their way to the scrap yard or dumpster. Just post a classified.
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post #3 of 29 Old 04-05-2013, 06:05 PM
SubAtomicGenius
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Personally, I'd go with a set of aftermarket.

However, like most Jeep JK enthusiasts, I've got a set of stock ones in the garage, too. Lots of people have stock take-offs, post a classified or send me money for shipping.
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post #4 of 29 Old 04-05-2013, 06:08 PM
ncb
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Looks like Quadratec sells the stock arm for $34.99.
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post #5 of 29 Old 04-05-2013, 06:28 PM Thread Starter
Thunderstrike
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Thank you, ncb. $34.99 stock replacement is very tempting. It's either this one, or a set of Synergy Suspension Rear Lower High Clearance Fixed Length Control Arms for $199. Synergy is bent for extra clearance. Anyone has experience with Synergy product?

http://www.quadratec.com/products/16315_6513_07.htm

2009 JK Rubicon (Former Daily Driver); 2014 VW Jetta GLI Autobahn w NAV.
Auto, Power, Remote Start, Towing Package, MyGig Navigation with Lockpick, Rear View Camera, B&M 70268 Transmission Cooler, Aeroforce Interceptor, Valentine 1, Tub Sound-Deadened with Raamat and Ensolite, Hard Top Heat Insulated with 1/2" Styrofoam Insulation, Bilstein Shocks Front & Rear, PIAA Dual Horns, IPF 920H4 Headlights.
Protection: Skid Row Engine Skid, Lower Control Arm skid & Evaporator Skid; Rock Hard Gas Tank Skid; Warn Stainless Steel Differential Skid Front & Rear.
Recovery Gear: Warn 9.5Ti Winch, 11,000# Pull-Pal.
Communication: Uniden 520XL CB, Diesel External Speaker, 3' FireStik Whip.
Shrockworks Mid-width Front Bumper with Warn 9.5Ti Winch -- Ordered 7/17/2009; Bumper Received 12/4/2009.
1" Coil Spacer Front & 1/2" Coil Spacer Rear restored OEM Rake.
4x4 Trips:
Moab - 4/2006, 5/2008, 4/2009, 5/2011, 4/2013
Ouray - 8/2007
Rubicon - 9/2008
Gone, but not forgotten: 2004 TJ, 1999 Audi A4, 1992 VW Jetta GL 5 Speed
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post #6 of 29 Old 04-05-2013, 06:31 PM
ncb
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Quote:
Originally Posted by Thunderstrike
Thank you, ncb. $34.99 stock replacement is very tempting. It's either this one, or a set of Synergy Suspension Rear Lower High Clearance Fixed Length Control Arms for $199. Synergy is bent for extra clearance. Anyone has experience with Synergy product?

http://www.quadratec.com/products/16315_6513_07.htm
That arm is .5" longer than stock. It will change the driveshaft angle. It's meant for a lifted rig where you would also run adjustable uppers.
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post #7 of 29 Old 04-05-2013, 06:32 PM
ncb
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Most Jeep shops have piles of control arms you can get for cheap or free.
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post #8 of 29 Old 04-28-2013, 12:22 AM
Perkalater79
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Hi. I just discovered the same thing on my rubicon today on the trail. I don't know if it happened today or some other time.

I will undoubtedly replace it as some point, but is it necessary? Does it cause any harm or risk anything?

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post #9 of 29 Old 04-28-2013, 07:21 AM
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Yes, it's necessary-

That small bend, puts a new structural STRESS on everything attached to that axle, and will cause undue wear/failure, ie-bushings/welds/shocks-etc, at some critical time-

Replaceit-

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post #10 of 29 Old 04-28-2013, 07:23 AM
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Bummer. Not what I wanted to spend money on the jeep .

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post #11 of 29 Old 04-28-2013, 07:31 AM
Perkalater79
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What if mine where less bent than the one in the picture? :/

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post #12 of 29 Old 04-28-2013, 07:48 AM
JIMBOX
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What if your parachute has a small tear in the rip cord ??

Is it worth the CHANCE ?

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post #13 of 29 Old 04-28-2013, 08:11 AM
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Replace with stock part new or used ASAP. You can do your research later and and find the the best aftermarket product for your application.
For $34.99 I wouldn't think twice.

^^Jeff^^
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post #14 of 29 Old 04-28-2013, 04:36 PM
Perkalater79
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Ok. Thanks for the tip. Y'all sound pretty adamant about getting it fixed. I actually didn't think it would do any harm as is.

Here's mine. The passenger one is the bent one. You can see I hit the linkage pretty good too. I really have no idea how long it's been.

image-2336119495.jpg

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post #15 of 29 Old 05-07-2013, 10:47 PM
Perkalater79
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So here are a couple other pics. I also took several measurements between the axle, suspension linkages, control arm bolts trying to determine if there was any measurable difference in the effective length of my control arm ad a result of the bend. Results: nothing!

I used a tap measure and took 3-4 identical measurements on each side. If the bend were to cause any stress, wouldn't it be a result of slightly different axle position as a result of a shortened control arm?

What's else might cause premature wear or extra stress? And what other components should I check?



image-4058003789.jpg

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