Lift question
#1
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Location: Robbins nc
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Year: 2000
Model: Cherokee (XJ)
Engine: 4.0
Lift question
Is it necessary do to have a front double cardan driveshaft on a 4.5inch lift, no extreme wheeling will be done with this build
#2
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At 4.5 the difference in the angle between the output shaft of the transfer case, and the input shaft (pinion) of the differential becomes pretty severe. This typically has to be compensated for, one way or the other. The existing 2 u-joint setup can not usually deal with that amount of direction change in the drive shaft without bad vibrations or chewing through u-joints every year (or both..typically). This additional stress will also help cause pinion seal leaks at the differential. Transfer case drops (lowering the cross member), slip yoke eliminators, customer rear drive shafts (using a front shaft with cardan), and axle pinion angle adjustment shims are all used to try and correct the the angle between the transfer case and differential, or at least get it back into a reasonable range that won't result in vibrations or other problems. It is on the road, under torque load, and at speed where these problems will drive you crazy.
So the short answer is probably...yes. You'll likely have to do -something- to account for the angle difference the lift has created.
So the short answer is probably...yes. You'll likely have to do -something- to account for the angle difference the lift has created.
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brian dupree
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
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09-05-2009 12:10 PM
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