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Unread 04-19-2013, 12:51 PM   #1
loumandeville
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First jeep, just did soa

So I got my jeep almost a year ago, had to do a slave cylinder so while I had tranny out I welded new perches on my axles put it all back together. Blew apart my ujoint after 20 miles, put it back on the lift and made some spacers to drop my transfer case and put shims in my rear end,Put all new ujoints in, drove it around again and now it has a vibration in 4th and 5th, thinking its more then an alignment, any ideas?

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Unread 04-19-2013, 12:52 PM   #2
Steve707
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Pinion angle? Did you install an sye and cv shaft too?
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Unread 04-19-2013, 12:53 PM   #3
Louie4
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Can you post a picture of your rear driveline? That would help us a lot.
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Unread 04-19-2013, 12:53 PM   #4
loumandeville
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Pretty good amount of flex out of it. No sway bars
image-3458344757.jpg
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Unread 04-19-2013, 12:54 PM   #5
loumandeville
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Quote:
Originally Posted by Steve707
Pinion angle? Did you install an sye and cv shaft too?
Only did new brake lines and perches
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Unread 04-19-2013, 12:55 PM   #6
loumandeville
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Quote:
Originally Posted by Steve707
Pinion angle? Did you install an sye and cv shaft too?
And pitnam arm obvi
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Unread 04-19-2013, 12:58 PM   #7
loumandeville
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Quote:
Originally Posted by Louie4
Can you post a picture of your rear driveline? That would help us a lot.
I'm about 2200 miles away from my jeep right now
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Unread 04-19-2013, 02:47 PM   #8
Louie4
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Quote:
Originally Posted by loumandeville View Post
I'm about 2200 miles away from my jeep right now
That may make it difficult.

The vibrations you feel could be a lot of things. Do you have an SYE? Did you set your pinion angle properly? With larger tires and a SOA suspension there can be axle wrap which eats u-joints. A traction bar is usually installed. Have you checked your trans and engine mounts? Is your stabilizer bushing for the torque arm connected? Have you tried rotating the tires just to see?

Once you get back to the jeep let us know what you find.
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Unread 04-19-2013, 03:03 PM   #9
loumandeville
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Quote:
Originally Posted by Louie4

That may make it difficult.

The vibrations you feel could be a lot of things. Do you have an SYE? Did you set your pinion angle properly? With larger tires and a SOA suspension there can be axle wrap which eats u-joints. A traction bar is usually installed. Have you checked your trans and engine mounts? Is your stabilizer bushing for the torque arm connected? Have you tried rotating the tires just to see?

Once you get back to the jeep let us know what you find.
Can I just bring my jeep to you? Lol I have no sway bar, no traction bars (to short) I rotated the tires when I put it back together, I think pinion is too high, which is why I shimmed it. I was going to take xj drive shaft and have it shortened, also thought about doing 1 inch lift shackles with longer shaft and lowering transfer case more. Stock 30" tires
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Unread 04-19-2013, 06:14 PM   #10
Anticanman
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You should have read a lot more before you just welded all perches on and called it a lift. Now you have problems? Color me surprised.
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Unread 04-19-2013, 10:56 PM   #11
Joe Dillard
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Quote:
Originally Posted by loumandeville View Post
So I got my jeep almost a year ago, had to do a slave cylinder so while I had tranny out I welded new perches on my axles put it all back together. Blew apart my ujoint after 20 miles, put it back on the lift and made some spacers to drop my transfer case and put shims in my rear end,Put all new ujoints in, drove it around again and now it has a vibration in 4th and 5th, thinking its more then an alignment, any ideas?
Quote:
Originally Posted by loumandeville View Post
Only did new brake lines and perches
Quote:
Originally Posted by loumandeville View Post
And pitnam arm obvi
Quote:
Originally Posted by loumandeville View Post
Can I just bring my jeep to you? Lol I have no sway bar, no traction bars (to short) I rotated the tires when I put it back together, I think pinion is too high, which is why I shimmed it. I was going to take xj drive shaft and have it shortened, also thought about doing 1 inch lift shackles with longer shaft and lowering transfer case more. Stock 30" tires
I'm not sure if you could have taken any more shortcuts than you have already. The results are showing up in issues.

If somebody informed you that you'd get decent results by doing things the way you chose to - stop listening to them, they ain't doing you any favors. They are actually causing more headaches, unnecessary double work, and making things fubar for you.

Read the FAQ thread - specifically the SOA suspension thread.
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Unread 04-20-2013, 06:45 AM   #12
USMCBuckWild
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You have 2 guys right above me who know heir *****!

I have an SOA on my jeep, stock driveshaft with out a SYE and I don't have driveline vibrations. I set the rear up properly when I did my 8.8 swap, i don't have a traction bar and don't get axle wrap with my 350. I also beat the bejesus out of mine.

As both of AntiCanMan and Mr Dillard have said, do it right the first time. Read the FAQs and it will show all the things not done correctly, this will help you self diagnose the issues and remedy them.

Good luck!
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Unread 04-20-2013, 07:07 AM   #13
soonermatt
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LOL this is so awesome. Some actually did a SOA with zero reading.

So I don't get flagged I'll say something productive...

You are most likely going to need new front and rear driveshafts, SYE, rear anti wrap bar, steering work and your jeep is not currently safe to drive. You have just taken a step towards awesome now you need to finish it.
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Unread 04-20-2013, 07:13 AM   #14
jsawduste
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The pictures on the wall are interesting.
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Unread 04-20-2013, 07:44 AM   #15
Anticanman
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The pictures on the wall are interesting.
You had time to look at the pictures? I was more afraid of the zombie unibomber protecting his "preciouses" stuffed away in the chest freezer just out of sight.
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