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Unread 11-24-2013, 04:31 PM   #1
Registered User
1997 TJ Wrangler 
Join Date: Nov 2008
Location: Louisville, Ky.
Posts: 2,066
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.
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.

Torque is the measure of force that gets the cap off your beer.

Mike D.
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Unread 11-24-2013, 05:08 PM   #2
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1984 CJ8 
Join Date: Jun 2013
Location: Denver, CO
Posts: 1,296
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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