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  #25  
Old 03-31-2011, 10:53 PM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

Can you run these even if your not lowered? Would it be worth it as far as durability and handling?
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  #26  
Old 04-01-2011, 09:59 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

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Originally Posted by ride4life686 View Post
Can you run these even if your not lowered? Would it be worth it as far as durability and handling?
Interesting question. These A-arms kick the spindle outboard about 3/4", which compensates for the added negative camber if your SRT8 is lowered. What will happen with the Jeepin' by Al arms at stock SRT8 ride height is that your camber will go positive. Will there be enough adjustability in the stock setup to get you back to -0.25 or -0.75? I think so, especially since the WK control arm is the same piece across all models and the non-SRT rigs ride much higher. This suggests that there will be enough adjustability in the stock lower control arm to accomodate all the various ride heights.

There is no doubt that the JBA A-arm is much stronger than stock. I wouldn't expect any handling improvement unless the stockers are flexing, which I doubt. You will definitely get better ball joint wear because the angulation is improved and the BJ itself is beefier than the non-greasable OEM.
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  #27  
Old 04-01-2011, 10:29 AM
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So in theory it "should work". Are there any ppl using them now who arent lowered and can say for sure.
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  #28  
Old 08-21-2011, 06:18 PM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

any new news on this?
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  #29  
Old 08-21-2011, 07:21 PM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

mine have about a thousand miles with no issues

alignment guy said there was lots moreadjustment.
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  #30  
Old 08-22-2011, 01:37 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

The Jeepin by Al upper control arms for lowered Cherokee SRT8s were developed to compensate for increased camber caused by lowering. I was among the first to approach Marlin at Jeepin by Al to develop these parts. Inner tire wear problems plague Jeeps even at the stock ride height and camber settings. Lowering the SRT8 will max out the camber adjustment, resulting in out-of-spec camber settings or, in the best case scenario, camber on the extreme high side of spec. If you wish to decrease camber to -0.25 degree, which is acknowledged to mitigate inner tire wear problems, then these A-arms are the only solution. Adjustable upper ball joints (made by SPC and also sold by Eibach) were found to be incompatible with SRT8s due to shock tower interference.

I have put about 2k miles on these babies and can report that I have had no issues. So here is what we have learned in the development of this piece:

1) The additional length of the A-arm and the slightly higher dimension of the ball joint limits suspension travel. Shock tower interference will occur if the ride is lowered by more than one inch from the stock SRT8 ride height. This can also occur if the bumpstop is modified. It may be possible to conservatively modify the bumpstop, but this is currently untested. Go at your own risk;

2) The angulation of the ball joint is corrected by the flange of the A-arm. Therefore, the ball joint operates in a more favorable range of motion and will have improved wear characteristics due to the elimination of unfavorable side-loading forces;

3) The removable ball joint is stronger than the OEM and is bolt-in. The grease fittings must be straight. 90 degree fittings can cause shock tower interference;

4) It is possible to achieve 0 camber with these A-arms;

5) They are as beefy as the A-arms for lifted Jeeps, which need to be stronger for off-road duty;

6) $450 may seem like a lot, but tires are more, much more.
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  #31  
Old 08-22-2011, 03:14 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

any of you guys have a stock upper arm thats still good?
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  #32  
Old 05-12-2012, 03:06 PM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

Does anyone have, or can anyone take a measurement of an SRT UCA? Reason being that my JBA UCA causes the Knuckle to hit the strut when the wheel drops making a clunk. Mine isn't an SRT UCA but I'm curious as to the SRT size.


Below is an OEM, JBA, RR UCA


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  #33  
Old 05-13-2012, 09:20 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

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Originally Posted by YB Normyl View Post
Does anyone have, or can anyone take a measurement of an SRT UCA? Reason being that my JBA UCA causes the Knuckle to hit the strut when the wheel drops making a clunk. Mine isn't an SRT UCA but I'm curious as to the SRT size.


Below is an OEM, JBA, RR UCA


The upper control arm is the same across all WK models, so your measurements will be identical to a UCA from an SRT.

You say you have a non-SRT model. The Bilstein struts on the SRT offer more than enough clearance - we have had no reported clearance issues. It looks like your struts do not. What model is yours? You may have to upgrade to the SRT struts.
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  #34  
Old 05-13-2012, 07:50 PM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

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Originally Posted by Rose City GC SRT8 View Post
The upper control arm is the same across all WK models, so your measurements will be identical to a UCA from an SRT.

You say you have a non-SRT model. The Bilstein struts on the SRT offer more than enough clearance - we have had no reported clearance issues. It looks like your struts do not. What model is yours? You may have to upgrade to the SRT struts.
I should have asked for a JBA SRT UCA measurement, my GC is a 2008 Laredo CRD. What I'm trying to find out is whether I have the right part, because the JBA UCAs I have are shorter than OEM and correct me if I 'm wrong but when you lift, you need a longer UCA to limit negative camber as the body goes up and the wheel goes down it pulls the top of the wheel towards the inside, and when you lower your Jeep the UCA is in a more horizontal position pushing the top of your wheel out thus increasing your positive camber once the A-arm passes center you would need longer UCAs as well.
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Old 05-14-2012, 08:29 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

Quote:
Originally Posted by YB Normyl View Post
I should have asked for a JBA SRT UCA measurement, my GC is a 2008 Laredo CRD. What I'm trying to find out is whether I have the right part, because the JBA UCAs I have are shorter than OEM and correct me if I 'm wrong but when you lift, you need a longer UCA to limit negative camber as the body goes up and the wheel goes down it pulls the top of the wheel towards the inside, and when you lower your Jeep the UCA is in a more horizontal position pushing the top of your wheel out thus increasing your positive camber which is why you would need shorter UCAs.
If you are lowering, you need a longer control arm. A shorter one like yours is going in the wrong direction.
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  #36  
Old 05-14-2012, 10:17 AM
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Re: CUSTOM UPPER CONTROL ARMS 4 SRT8s

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Originally Posted by Rose City GC SRT8 View Post
If you are lowering, you need a longer control arm. A shorter one like yours is going in the wrong direction.
Everything I've read says you need longer control arms for lifted trucks. If you hold your arm out straight to the side, lowering your arm would be the same as lifting your vehicle and the UCA balljoint dropping with the knuckle, so the further your arm goes down the closer your hand/ball joint and knuckle get closer to your legs/strut which is why you need a longer arm, to keep the knuckle from contacting the strut.
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