Very Bad Vibration

[s1ngletracker]

I think your excessive toe + bad wheel bearing could definitely be causing it. You're putting a side load on the wheel bearing (which has play in it) and you could be seeing an oscillation in the dynamic toe of the wheel. I'd fix those problems before you worry too much about throwing more $$$ and parts at it.

I've used the precision joints and never had problems, nor have they caused my driveshaft to be crazy out of balance.

Notchy U-joints are totally normal (seen it on almost every DSM driveshaft) and shouldn't be causing that much vibration. It'd have to be really damaged and in need of replacement. Can't hurt to change them though, they're pretty cheap.

What it sounds like to me is that you may have borked driveshaft angles. I've never done an AWD swap so i'm not sure how easy it is to mess up, but if you have too severe an angle on one of your U-joints, you can and will get good amounts of vibration. Could also be caused by a really bad carrier. Although at 5mph I wouldn't think the shaft is spinning fast enough to even cause that much vibration.

Are you sure you don't have something rubbing on the bent knuckle, driveshaft rubbing exhaust, etc?

[mark4g63t]

Yea all the videos and threads about carriers i've seen they get a vibration at like 50mph and under acceleration. I can get nowhere near that speed.

I will look to see if it might be hitting the downpipe.

The driveshaft looks pretty darn straight when it's bolted up and I tried my best to align it exactly where the other bracket that I removed was. But I don't have a tool to measure the angles of it, so I have no real evidence.

[b00sted_spyder]

Yes I did but it went very smoothly and no issues seemed to pop up. It was pretty straight forward.

I think any u-joint is better than the rear one. I'm going to post a video of it

https://www.youtube.com/watch?v=HFu816Uw6wY&feature=youtu.be

Can see it being notchy and kinda "sticky"

Did you do a bearing kit as well on the rear diff? With a new ring a pinion, you should always check your pattern.

[mark4g63t]

I did not. What do you mean by "pattern"?

[Goat Blower]

Looking at the gear mesh for proper shimming of the gear.

[mark4g63t]

Idk if this pic helps but this was right before the last cap went on. There was no excess play in the pinion gear when I grabbed it from the flange where it connects to the D.S. And I never touched the lsd part...If that's what you are referring to?

[1QUICK4]

A lot of times if it's a carrier bearing you would get a knocking noise with the vibration.

I'd pack those bitches in urethane anyways though, check for proper gear mesh and fix the known bad wheel bearing

[mark4g63t]

Waiting on the new knuckle to change the wheel bearing because I don't want to ruin the good one.

I don't remember hearing a knocking sound but I was also just worried nothing was going to break and focusing on that lol

[mark4g63t]

Maybe i'll put it all back together tonight and take it for another test drive and video it to see if I can locate anything suspicious.

[b00sted_spyder]

Yeah with a new ring and pinion, you will most likely have to re-shim the pinion or differential carrier. Without the proper pattern, you can get vibration and can cause a lot of damage to the differential carrier.