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  #1  
Old March 20th, 2020, 23:36
1WhiteXJ 1WhiteXJ is offline
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Long Arm Upgrade Questions (lots)

Hey all-
New to , but not new to Jeeping. I am looking to upgrade my short arm suspension to a long arm setup (either 3 or 4 link). I have read quite a few threads by others on long arm kits and have been researching quite a bit. Sorry in advance for all the ?'s.



I know this has been discussed quite a bit on here, but is there any drawbacks to having a 3 link verses 4? Is axle stability or driveability on the highway really an issue? If that were true, why do most manufacturers offer a 3 link kit? I see 3 link as better since there is less potential binding and less opportunity for that other upper arm to contact something you don't want it to...



It looks like quite a few people have (or like) the Stinky Fab setup. My question on that kit is why are the control arms aluminum? That is the only kit I've seen that doesn't use steel arms...


On the Iron Rock 3 link, there seems to be some reviews from people that have issues with the upper arm contacting the driveshaft. Can anyone shed any light on that? Is that a common problem?


On the Clayton 3 link, it looks like the cross member doesn't have as many mounting points to the frame rails as other kits. Should that be a concern or not? Or does anyone know how many bolts attach it to the frame rails?


As far as joints are concerned, half the kits have Heims, and half have Currie Johnny Joints. From what I can tell, the JJ will have a little more vibration damping and reduction of "jolt" when hitting sharp bumps. Is this true? I imagine that Heims are stronger and flex more, but at the cost of a smooth ride?


Some kits have straight arms and some are bent. I've heard some say that bent arms are not as strong because they have a weak point "built in" to them. Is this really an issue if the arms are made of, say, 2" DIA tubes that are 1/4" thick? Do some people complain about their tires rubbing on the straight arms?


OK that's all for now. Thanks for any insight!
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  #2  
Old March 21st, 2020, 11:43
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4x4JeePmaNthINg 4x4JeePmaNthINg is offline
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Re: Long Arm Upgrade Questions (lots)

3 links are great, but only 3 links vs 4 connecting points, don't sweat it.
- set, just guessing but they are aluminum for weight sake and no one else is doing it, awesome reviews to.
-On the vendors portion of naxja, the iro kit had a gentleman working out the drive shaft issue, I believe the revised the upper arm.
-clayton kit = 4 bolts And Welding
- imo jjs do dampen a lot of vibes
A bend in an arm is a fatigue point, but for the most part won't be an issue.
My 2 cents
Tires can and will rub without bends/ proper backspacing
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  #3  
Old March 21st, 2020, 11:44
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4x4JeePmaNthINg 4x4JeePmaNthINg is offline
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Re: Long Arm Upgrade Questions (lots)

3 links are great, but only 3 links vs 4 connecting points, don't sweat it.
- set, just guessing but they are aluminum for weight sake and no one else is doing it, awesome reviews to.
-On the vendors portion of naxja, the iro kit had a gentleman working out the drive shaft issue, I believe the revised the upper arm.
-clayton kit = 4 bolts And Welding
- imo jjs do dampen a lot of vibes
A bend in an arm is a fatigue point, but for the most part won't be an issue.
My 2 cents
Tires can and will rub without bends/ proper backspacing
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  #4  
Old March 21st, 2020, 12:18
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paulhead paulhead is offline
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Re: Long Arm Upgrade Questions (lots)

I got the Cav Fab 3 link, really happy with it.





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  #5  
Old March 21st, 2020, 19:48
bajabronco bajabronco is offline
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Re: Long Arm Upgrade Questions (lots)

You are wondering why aluminum arms vs.steel? When steel bends it stays bent!


This is my BDS lower control arm after hard wheeling! Aluminum arms are lighter as well as they will bend back into shape vs bending under big impact. I bent one of the lower steel arms in my BDS 4 link kit, and when I decided to replace them I went with aluminum ones.
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  #6  
Old March 21st, 2020, 20:00
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by 4x4JeePmaNthINg View Post
-clayton kit = 4 bolts And Welding
- imo jjs do dampen a lot of vibes
A bend in an arm is a fatigue point, but for the most part won't be an issue.
My 2 cents
Tires can and will rub without bends/ proper backspacing



I did see in the instructions for the Clayton kit that there is a bunch of welding and since I don't own a welder... and my welding skills are (lets just say "basic"), I am leaning toward a bolt on kit.


Good to know Johnny Joints are good for eliminating vibration. For me, one of the most important aspects for jumping into long arms is for the improved ride on the highway. I spend quite a few hours on the highway getting to and from the trails during the summer.


It seems almost all of these company's kits use huge lower control arms that should be more than strong enough to resist bending. I probably shouldn't be worried about a bend in a control arm... Just a question I guess.



Thanks for the response!
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  #7  
Old March 21st, 2020, 20:04
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by paulhead View Post
I got the Cav Fab 3 link, really happy with it.

Paulhead-
This is one of the kits I really have my eyes on. I like a lot about it. I assume you are very happy with the ride quality and components? How long have you been wheeling it? Any concerns or complaints?
Thanks for the response!
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  #8  
Old March 21st, 2020, 20:07
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by bajabronco View Post
You are wondering why aluminum arms vs.steel? When steel bends it stays bent!

I bent one of the lower steel arms in my BDS 4 link kit, and when I decided to replace them I went with aluminum ones.

So, are you saying that aluminum arms are stronger than steel? or that they have more "give" or flex to the actual metal arm?
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  #9  
Old March 21st, 2020, 20:15
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paulhead paulhead is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by 1WhiteXJ View Post
Paulhead-
This is one of the kits I really have my eyes on. I like a lot about it. I assume you are very happy with the ride quality and components? How long have you been wheeling it? Any concerns or complaints?
Thanks for the response!
Ride quality is awesome, wheeling it feels great. Even did the wheel alignment with a tape measure and no wobble. No welding and you can remove the center section by itself. Real solid set up just a little pricey. Gotta get it on a sale. I got it on black friday 2 years ago for under $1k. Here's my build thread
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  #10  
Old March 21st, 2020, 20:55
bajabronco bajabronco is offline
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Re: Long Arm Upgrade Questions (lots)

Check this out ..


https://www.youtube.com/watch?v=S1yikfwrg6I
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  #11  
Old March 21st, 2020, 21:03
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paulhead paulhead is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by 1WhiteXJ View Post
So, are you saying that aluminum arms are stronger than steel? or that they have more "give" or flex to the actual metal arm?
Stinky Fab would be the one I would get if I bought another XJ though.
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  #12  
Old March 21st, 2020, 21:27
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

That is an awesome build. Very nice!
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  #13  
Old March 21st, 2020, 21:29
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

Quote:
Originally Posted by bajabronco View Post

Very interesting! Thanks!
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  #14  
Old March 21st, 2020, 22:40
1WhiteXJ 1WhiteXJ is offline
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Re: Long Arm Upgrade Questions (lots)

Hmmm. Now looking heavily into the SFR long arms for these reasons:
1. I can use the stock cross member (and my existing TC skid). If I need to upgrade in the future, I can simply get their cross member and TC skid.
2. Apparently the Aluminum arms are stronger and lighter.
3. All joints are Johnny Joints.

4. Nearly same price as CavFab.
Any other thoughts on this?
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  #15  
Old March 22nd, 2020, 08:05
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smokeyyank smokeyyank is offline
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Re: Long Arm Upgrade Questions (lots)

Stinkyfab. Better product all around and Dallas is a vendor.

Ironman would be the only other kit I'd look at. More money but super stout and very well built. IRO makes good stuff stiff that a little easier on the wallet.
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