I added a 5in suspesion lift to my 2000 Dodge Ram Extended cab long bed pickup, now there is a vibration when starting out from a dead stop. I was wondering if this could be caused by the drive shafts running at 2 different angles now.
2006-08-16 16:10:25 · 8 answers · asked by Anonymous in Cars & Transportation ➔ Car Makes ➔ Dodge
they don't have to run at the same angle; usually the front shat goes into a fixed yoke where the carrier bearing is. The back shaft "floats" with the rear end housing changing the angle of the rear shaft. You may have exceeded the u-joints range with the 5"lift and they are binding. Check into a longer yoke for the carrier bearing to lower the end of the front driveshaft.
2006-08-16 16:20:57 · answer #1 · answered by xtowgrunt 6 · 0⤊ 0⤋
Two piece driveshafts almost always run at two slightly different angles. However, it's important that the U-joints are lined up properly. When you separate a two-piece at the slipjoint you must mark it so it is put back together the same way.
There is also a limit of how much of an angle you can have on ANY U-joint. With that much lift you've probably exceeded that. It may be possible to relocate the center carrier to straighten things out and/or tilt the engine and trans assembly slightly and/or rotate the rear axle slightly to get the angles back within spec. You want the line from the trans output shaft to the diff pinion shaft to be as straight as possible.
A specialist driveshaft shop can help you out.
2006-08-16 16:22:24 · answer #2 · answered by Bostonian In MO 7 · 0⤊ 0⤋
Depends on the length of the shafts. I believe anything over 11 degrees becomes hard on the U-Joints. If this is a two piece driveshaft, make sure that the splines in the shafts are located in the right position. This is extremely important since the shaft could self-destroy and cause damage or injury.
If you are not sure whether the two shafts are put together correctly, pick up a book that shows you the proper assembly.
2006-08-16 16:17:27 · answer #3 · answered by Anonymous · 0⤊ 0⤋
The shaft angle into and out of each drive shaft section has to be the same + or - 1/2 degree. The angle of the pinion out of the differential and the angle thru the center support has to be the same. Angle gages angled spring blocks to realign the pinion angle you will should smooth out if the u-joints are good. Keep several u-joints on hand because the lift you are working those joints more.
2006-08-16 16:20:17 · answer #4 · answered by John Paul 7 · 0⤊ 0⤋
It is also important that when you take a two piece driveline apart, to make sure that the two are lined up exactly the way they were.They are balanced with weights, and if they are put back incorrectly, you'll be going through u-joints like crazy as well!!
2006-08-16 16:18:39 · answer #5 · answered by pfc_weiss 5 · 0⤊ 0⤋
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2016-12-11 10:08:58 · answer #6 · answered by ? 4 · 0⤊ 0⤋
no the angles dont have to be the same but you need the same angle on the rearend as the part of the shaft going to the pinion
2006-08-16 16:28:33 · answer #7 · answered by PAUL9999 2 · 0⤊ 0⤋
Its critcal, you are going to start going through u-joints.
ASE TECH20yrs
2006-08-16 16:14:55 · answer #8 · answered by race21 3 · 0⤊ 0⤋