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Unread 11-24-2013, 03:31 PM   #1
twoleos617
Registered User
1986 CJ7 
 
Join Date: Nov 2008
Location: Louisville, Ky.
Posts: 2,026
Xfer case drop

I bumped up from 3" to 4" springs. Got a very high frequency vibration around 30-35 mph. Kinda knew that was coming so i had a xfer drop kit on standby. Installed the drop kit and there was no change for better or worse.
Before the drop installation the rear drive shaft looked pretty darn straight as the rear springs had built in wedges.
Now naturally the shifters and clutch rod are lower and hard to shift and clutch rod is rubbing the fire wall.
Suggestions?
PS. The built in rear spring wedges have fat end facing front. I reused my 4* wedges up front with fat end facing front too.

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Unread 11-24-2013, 04:08 PM   #2
Spieg8
Registered User
1984 CJ8 
 
Join Date: Jun 2013
Location: Denver, CO
Posts: 1,064
My advice;
Get rid of the TC drop and set drive shaft and pinion angles correctly.

The wedges on the rear springs should have the thick part facing to the rear (pinion pointing lower), unless you have a DC drive shaft (then you want the pinion pointing upward... just below the TC output).

*edit* I don't really trust pre-installed shims either. Better to measure what you have and then install shims as needed.
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