Like from the transmission to the pinion and axle housing. Any thoughts/advice are much appreciated! Changing from a stock Dana 44 rear axle to a high pinion Dana 60 rear axle raises the rear pinion height by 2 3/4", so a 3" lift will have an essentially stock driveline subject here is driveshaft (pinion) angle and negative effects wear, driveline vibrations, etc.. IMO - across the board, You lift and you Will wear things quicker and in useage extremes break things. Lifted truck drive shaft angle finder. If dependability and reliability are concerns, stay as close to stock as possible. I measured my angles with my phone, my rear TC is at 2. Example: driving on a road with waves. 6 degrees, the shaft at 12. I added a 3/4 inch spacer to the rear end pinion thinking that the lift pulled the drive shaft out too much.
Anyone running a 3 to 4 inch lift tell me what your drive shaft angel is after the lift and how it's running with that angle. Also researched that "sometimes" the front pinion "could" pull out of the xfer case in a lifted scenario to the point that the splines are less than desired engaged on the output shaft. His carrier bearing on his two-piece has and angled mount which corrects his drive shaft angle to about a 160 degree angle instead of about a 110 in the joint. No broken shims as there are none. 03-05-2011 08:06 PM. 6" lift and a two piece drive shaft. Anyone out there have any experience with this or have a suggestion.
So it's a bit higher than the ideal of 1 degree difference (due to acceleration forces pointing the pinion up), but not crazy-bad. I want to verify any potential causes prior to fixing what might just be symptoms! I pushed it in to cover the shiny area and then measured how much more it could push in. So I finally got around to building some adjustable upper control arms. Anyways I would like to fix it as its really annoying and now it appears to have worn my carrier bearing and U-joints, I know there are guys that repaired theres on here so I really could use some help. High angle drive shaft. Up to 55 and after 65, smooth. I should be putting these on this weekend so I will update the thread with hopefully a post about no vibrations.
Any Constructive suggestions and inputs would be greatly appreciated. I've got an HDJ81 with a 6" lift and since I bought it a year ago the rear output bearing on the TC has become loose AND the output seal on the rear diff has started leaking. Pretty serious vibration 55mph to 65mph. Ive been trying to find a transfer case lowering kit to help take some of the angle out but can't find anything that is supposed to fit. 00 to have him install a piece of 3" square tubing under my carier and now he tells me im going to have to live with it, what a crock! 2 piece driveshaft angles with 6" lift. I am still using the 2" lift blocks that came in the kit originally (I made sure the tapper is positioned correctly). You can also buy shims.. That should help the slip yoke in the transfer case sit further inward.
Just keep a slush fund. Measured on the fins of the differential and transfer case, Diff is 7 degrees up, transfer case is 5 degrees down. So after all this I am still getting a small vibration between 25-35mph and nothing past that. However, that has randomly disappeared for some reason. I think I should get adjustable UCA's and slightly adjust the angle prior to fixing the loose bearing/leaks. It will give you warning before it goes - vibrations, grease spatters, torn boot. Drive shaft angle explained. Changing from a stock Dana 30 or 44 front axle to a high pinion Dana 60 raises the front pinion height by a fair amount, so driveline angle changes are very minimal. The pinion into the transfer case still shows a shiny area 1/2 inch long indicating it has not always been exposed. I posted a while back about having a drop bracket made for my carrier bearing after my lift was installed but im still having problems with a shudder /vibration when starting from a stop. Did you shim the axle or drop the rear of the trans or???