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Unread 12-20-2012, 10:30 PM   #1
tjhomeboy
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building long arms, need help

So I wanna build some long arms for my tj. I have about 4 inches of lift and some 35s. I have a bunch of free metal and am in school right now to be a welded so that's not a problem.
My questions are would sold bar work or is that to much? Where do I get the joints? I heard something about johnny joint and I think there made by currie
Thanks for the help

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Unread 12-21-2012, 03:01 AM   #2
lamar_j77
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Johnny joints (correct, made by Currie) or Heim Joints are what you will need. All of the fab material places resell them. You will need DOM for the links. Some folks with deep pockets go aluminum. Also, I recommend using the calculators:

http://www.jeepforum.com/forum/f369/...ators-1301802/
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Unread 12-21-2012, 05:11 PM   #3
tjhomeboy
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Thanks that's a lot of help
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Unread 12-21-2012, 07:49 PM   #4
jasonswelding
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Rustysoffroad.com has some good stuff.
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Unread 12-22-2012, 03:29 PM   #5
sailsurf7713
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Quote:
Originally Posted by jasonswelding View Post
Rustysoffroad.com has some good stuff.
No they don't.
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...I say don't lift but CUT. :)
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Unread 12-22-2012, 06:06 PM   #6
wushaw
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Square tube also works well and can be had at most metal yards.
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Unread 12-22-2012, 09:02 PM   #7
tjhomeboy
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Nothing cheaper than free thou
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Unread 12-23-2012, 08:00 AM   #8
rchase559
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Quote:
Originally Posted by tjhomeboy
Nothing cheaper than free thou
Do you have the ability to drill an tap them or do you just plan on getting them close enough and burning everything in?
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Unread 12-23-2012, 09:13 AM   #9
jasonswelding
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No they don't.
More info please. I haven't bought from there. I just meant they had a lot of parts needed. You may save me from buying bad stuff.
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Unread 12-23-2012, 11:28 AM   #10
JohndKc
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Free is free, but you're still going to spend a good chunk of change to build your own long arms. The correct joints, either heim or Johnny, are expensive. I spent 60 dollars on one, when i decided i wanted some lateral motion in my ladder bar.
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Unread 12-23-2012, 02:11 PM   #11
sailsurf7713
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Quote:
Originally Posted by jasonswelding View Post
More info please. I haven't bought from there. I just meant they had a lot of parts needed. You may save me from buying bad stuff.
Some of their builder stuff is alright. However, their customer service is well documented as horrible and their stuff is no better than any other fab company out there.

Joints, bushings, shocks, stuff like that. Downright miserable quality.
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Originally Posted by 97flexy View Post
...I say don't lift but CUT. :)
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Unread 12-23-2012, 08:39 PM   #12
Griff1918
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Lowrange has the cheapest weld in bungs I have found. Telco has the cheapest price on johnny joints.
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Unread 12-25-2012, 10:18 PM   #13
tjhomeboy
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Yeah I am a machinist and have access to machines so ill probably drill and tap it out
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Unread 12-25-2012, 10:32 PM   #14
Ripper3494
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When building my arms the calc was really no help, don't over think it, just build some adjust ability in the upper frame mounts

Make your arms as flat as reasonably possible

Make your arms as long as reasonably possible

Vert separation at axle should be about 25% of your tire height

Frame separation should be about 80% of your axle but build vertical adjustment into the mounts incase your suspension jacks or squats too much

Triangulation of either uppers or lowers should be greater than 40° to keep the axle nice and controlled

I like my uppers being a little longer than my lowers to help the pinion track nicely

Others may say different but this is what I've seen to work. Every Jeep is different
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Unread 01-12-2013, 06:23 PM   #15
LJWrangler
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I think he was saying LONG ARM not 4-link. Long arm is simple- Just make sure and lock/brace and tack the axle into place before you remove the arms to start building. all you need to keep the axle from moving is 4 pieces of angle or square tube- tacked to the axle and the frame to keep it from moving.
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