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Unread 03-31-2013, 08:50 PM   #16
gunshw301
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Was the shaft balanced? Tranny mount good?

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Unread 03-31-2013, 09:03 PM   #17
1993sahara
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Quote:
Originally Posted by gunshw301
Was the shaft balanced? Tranny mount good?
Shaft was rebalanced when they cut it down and tranny mount is good
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Unread 03-31-2013, 09:10 PM   #18
gunshw301
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Okay just checking. I just recently did this also and had it at approximately 2 degrees difference. Yours doesn't look much different than mine, but I did a tummy tuck, so the pinion is up a little more by the looks of it.
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Unread 04-01-2013, 09:47 AM   #19
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not tying to hijack the thread but is there any way to know where to weld the spring perches without the jeep being together ??
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Unread 04-01-2013, 10:03 AM   #20
PA_YJ19
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Quote:
Originally Posted by Gage56
not tying to hijack the thread but is there any way to know where to weld the spring perches without the jeep being together ??
Short answer is no, all the weight needs to b on the jeep. Driveline angles aren't something that can b guesstimated, they need to b exact.
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Unread 04-01-2013, 10:14 AM   #21
DLWRUBI
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Quote:
Originally Posted by Gage56 View Post
not tying to hijack the thread but is there any way to know where to weld the spring perches without the jeep being together ??
Not really. Since one jeep differ's from another, there is no one setting works for all.

Looking at the pics from to OP, the angle doesn't seem to bad with a 2* difference but a CV shaft should be straight, no offset at all. So either a 6* shim or cut perches and fix it. Just FYI, alot of 4" lifts come with 6* shims and a TC drop.
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Unread 04-01-2013, 11:26 AM   #22
1993sahara
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I just bought an angle finder this morning and measured. Driveshaft was coming in at 16 degrees and the rear was coming in at 12. So a 4 degree difference. This is with 4 degree shims already in place.

I can get 6 degree shims today or I can have a shop make me 5 degree shims and wait acouple days. Which route should I take??

Correct me if I'm wrong but 5 degree shims would get me to 14 and 16 and the 6 degree shims would get me to 16 and 16.

Not sure which rout since I hear some people say about letting the pinion a little low
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Unread 04-01-2013, 12:42 PM   #23
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I'd go with 6.
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Unread 04-01-2013, 12:47 PM   #24
bogleparsons
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would a measly 2 degrees make things vibrate that badly?

Seems like i had all sorts of bad angles on mine before the swap and never noticed much vibration.
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Unread 04-01-2013, 01:28 PM   #25
1993sahara
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Quote:
Originally Posted by bogleparsons
would a measly 2 degrees make things vibrate that badly?

Seems like i had all sorts of bad angles on mine before the swap and never noticed much vibration.
It's 4 degrees difference and the vibrations aren't bad at all, before the swap I had zero vibrations though so it's very noticeable to me.

I'm going to get 6 degree aluminum shims tonight and swap it out. Will switch to steel shims once they arrive
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Unread 04-01-2013, 01:37 PM   #26
PA_YJ19
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Is ur shaft a cut down xj shaft? If so ur cv joint in the shaft might need rebuilt. That will give u some vibes for sure. If its a brand new shaft then that obviously can't b ur issue. Just throwing it out there, when mine was bad it sort of made a thump like noise while spinning. I could feel and hear it increase and get louder as I increased speed.
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Unread 04-01-2013, 01:43 PM   #27
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Here's an easy indicator of a bad cv joint

https://youtu.be/uwMQTr_BpTY
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Unread 04-01-2013, 02:25 PM   #28
1993sahara
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Quote:
Originally Posted by PA_YJ19
Is ur shaft a cut down xj shaft? If so ur cv joint in the shaft might need rebuilt. That will give u some vibes for sure. If its a brand new shaft then that obviously can't b ur issue. Just throwing it out there, when mine was bad it sort of made a thump like noise while spinning. I could feel and hear it increase and get louder as I increased speed.
My driveshaft is just over a year old, built by quigley offroad. They build 4x4 vans. I had them cut it down so if anything was wrong with the shaft or joints they would have told me and replaced it
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/l ,[___],
l--L --[]lllll[]-

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Unread 04-01-2013, 02:54 PM   #29
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This is straight from Tom Woods web site:




You have CV right? I wouldn't think that a degree or two pinion down angle would hurt much.
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Unread 04-01-2013, 04:33 PM   #30
1993sahara
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Just put the 6 degree shims in and my driveshaft is 15-16 degrees and my pinion is hitting 14-15 degrees now.

Drove it around and feels like it's back to normal. Gonna drive it on the highway home and see she does.
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