Need a longer UCA... Lil help please - JeepForum.com
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post #1 of 16 Old 07-02-2010, 06:19 PM Thread Starter
N757QQ
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Need a longer UCA... Lil help please

So, I have my rear axle in, centered, solid. It is amazing going from 3.07:1 to 4.88:1 on 35s. I am very pleased with it.

My issue is that my adjustable UCAs (I have an AA SYE) are not long enough to get the axle pinion up where it belongs. I wish I had it welded at the angle it would be installed at, but it was not, and I cannot change it now. So, I have my adjustables all the way out & it is sitting level. My lowers are fixed, and I need longer uppers obviously, before my DS tears up, because it is binding & causing vibs.

My current ones are Rough Country adjustables. I need something that is significantly longer, both so I don't have it expanded all the way out, that makes me nervous (maybe my own lack of experience, but), and to get that pinion angled up about 20.

Any suggestions on should I just buy longer adjustable ends? is there such thing? I am hoping to replace them eventually with a long arm kit, but that's down the road a ways. If I have to buy new, what are some of the longer uppers to look at? I currently have my uppers sitting at 15.5" from middle of the bolt to middle of the bolt.


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post #2 of 16 Old 07-02-2010, 06:44 PM
TheDragonfly
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Curries will go to 12.5-13.5"
Rokmen has onesthat will go 13.5 - 14.5"
Rokmen has a longer version which will go from 14.5-15.5"

You will need to shorten your lowers so the uppers wont need to be out that far. The 35s will make contact with the body at full bump with uppers that long.
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post #3 of 16 Old 07-02-2010, 07:01 PM
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Find a local weld shop and take your lower arms there. They can cut a piece out and weld it back together for somewhere around $30 or so. Have them add a tube inside to strengthen it. You could end up with the axle hitting the fuel tank if you stretch out the uppers too much.
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post #4 of 16 Old 07-02-2010, 07:01 PM
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Quote:
Originally Posted by TheDragonfly View Post

You will need to shorten your lowers so the uppers wont need to be out that far.
Quote:
Originally Posted by N757QQ View Post
My lowers are fixed
Call up Rokmen.

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post #5 of 16 Old 07-02-2010, 07:17 PM
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Call up Rokmen.
If they don't have a fix, I would bet they do. Find out the thread size and search around. I went through this with my RE ones and lucky they sell a longer coupling that fixed me up.
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post #6 of 16 Old 07-02-2010, 09:28 PM Thread Starter
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Awesome, thanks guys for all the help. I'm sure I have a solid solution somewhere in there

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post #7 of 16 Old 07-02-2010, 10:47 PM
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Quote:
Originally Posted by N757QQ View Post
So, I have my rear axle in, centered, solid. It is amazing going from 3.07:1 to 4.88:1 on 35s. I am very pleased with it.

My issue is that my adjustable UCAs (I have an AA SYE) are not long enough to get the axle pinion up where it belongs. I wish I had it welded at the angle it would be installed at, but it was not, and I cannot change it now. So, I have my adjustables all the way out & it is sitting level. My lowers are fixed, and I need longer uppers obviously, before my DS tears up, because it is binding & causing vibs.

My current ones are Rough Country adjustables. I need something that is significantly longer, both so I don't have it expanded all the way out, that makes me nervous (maybe my own lack of experience, but), and to get that pinion angled up about 20.

Any suggestions on should I just buy longer adjustable ends? is there such thing? I am hoping to replace them eventually with a long arm kit, but that's down the road a ways. If I have to buy new, what are some of the longer uppers to look at? I currently have my uppers sitting at 15.5" from middle of the bolt to middle of the bolt.
Where are the tires centered? We just installed a new rear axle in the Savvy Unlimited and it's looking like we may have to cut a bit off the Currie uppers because we have them adjusted in all the way and still need a bit more to go.

Of course, that's with the axle on the bumpstops with the springs yanked out and the 35" MT/R just kissing the rear of the wheel well.

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post #8 of 16 Old 07-03-2010, 10:22 AM Thread Starter
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mrblaine,

I am going to try to do exactly what you describe in your post today, to see what needs to be done with the bump stops, as well as check where the tires are at full travel in both directions.

To answer your question, the tires are centered in the wheel well at ride height, but I am not sure about where they are through the range of suspension travel. The guy who did all but the gears, as far as getting it in the Jeep didn't mention much specific to this other than saying that my upper control arms are adjusted fully out as long as they will go.

I am about to go check the rest out this morning, and I will post back on exactly what I see. I will get some pictures as well if I can. Sorry for not having more information available, late last night & this morning are my first times back home with all my tools, so that I can have a look. Not that I have some extensive knowledge of anything mechanical, but... so I can better ask for help I guess.

Thanks for your time, everyone.

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post #9 of 16 Old 07-05-2010, 04:56 PM Thread Starter
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Sorry for the delay. I have been rather busy the last few days.

Here are a few pictures of the DS where I am about 90% sure it is binding & causing the vibes. I also have a picture of the wheels in the well, and can get more of the axle or specific stuff as needed.

Also, I got stuck working overtime for both of my days off, so I did not yet get a chance to work on pulling the springs to see where everything as the suspension travels. If it matters, I am planning to get my gas tank up as soon as I can, so that might help some with the axle hitting it. But I am not moving it into the cab, so I am not sure how much room I will get from the change.
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post #10 of 16 Old 07-05-2010, 06:42 PM
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I think people will want a nice from the side shot of the driveshaft/differential to transfer case image. Not so much a close up, just as good of a side perspective to see how your angle is.
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post #11 of 16 Old 07-05-2010, 06:47 PM
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It looks like you're concerning yourself with the t-case end of the driveshaft. You need to set the axle end.

My RHD TJ - Savvy equipped... And loving it!

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post #12 of 16 Old 07-05-2010, 07:30 PM Thread Starter
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Gotcha. Will try to get a better pic. The only reason I took the ones I did of that end is that I am sure the axle isn't angled as it should be, and that is where the issue is occurring, since it is binding there. I gather though that it may not be in my best interest to go with an even longer UCA where I may hit the tank on up travel, and if I go with shorter LCAs I'll lose wheelbase, and potentially cause other issues?

Let me see if I can get some light & a better pic.

edit: here is the pic. Little blurry, but I had to hold the camera steady for about 10sec while it captured. Again, I know it is the drive line angle, the issue is how to fix it since my UCAs are maxed out full length. My lowers are fixed unless I buy new & shorten them, or lengthen the uppers. Also, I know a MML would help a touch here as well.
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Last edited by N757QQ; 07-05-2010 at 07:53 PM.
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post #13 of 16 Old 07-05-2010, 07:51 PM
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Originally Posted by N757QQ View Post
Gotcha. Will try to get a better pic. The only reason I took the ones I did of that end is that I am sure the axle isn't angled as it should be, and that is where the issue is occurring, since it is binding there. I gather though that it may not be in my best interest to go with an even longer UCA where I may hit the tank on up travel, and if I go with shorter LCAs I'll lose wheelbase, and potentially cause other issues?

Let me see if I can get some light & a better pic.
Before the internet made such a huge deal over wheelbase, the rest of us just made stuff clear at full stuff and went wheeling.

If you are truly concerned over an inch or so of wheelbase, sell your rig and go buy an Unlimited or a Toyota P/U.

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post #14 of 16 Old 07-05-2010, 07:57 PM Thread Starter
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Fair enough. It is not so much a concern, as it is that this is my intro into off roading. Before this Jeep, I had no concept, other than hillbilly mudding.

So, I should be good with adjustable lowers & losing a touch of wheel base?

Thanks again for the help.

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post #15 of 16 Old 07-05-2010, 07:58 PM
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Originally Posted by N757QQ View Post
Gotcha. Will try to get a better pic. The only reason I took the ones I did of that end is that I am sure the axle isn't angled as it should be, and that is where the issue is occurring, since it is binding there. I gather though that it may not be in my best interest to go with an even longer UCA where I may hit the tank on up travel, and if I go with shorter LCAs I'll lose wheelbase, and potentially cause other issues?

Let me see if I can get some light & a better pic.

edit: here is the pic. Little blurry, but I had to hold the camera steady for about 10sec while it captured. Again, I know it is the drive line angle, the issue is how to fix it since my UCAs are maxed out full length. My lowers are fixed unless I buy new & shorten them, or lengthen the uppers. Also, I know a MML would help a touch here as well.
That is a very poor pinion angle...
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