I have an issue when I am driving my Jeep I get this weird clunking noise in the back end (I Believe) When I am turning slow probably under 25 MPH I don't know what is causing it. It has brand new tires and the diff is welded. It gets worse after driving for a while and it's super loud. I don't know where to start. 8.25 rear axle I got it from a friends dad and everything on it is brand-new from last year besides the lift kit, rebuilt engine, transmission, everything is new on the engine as well, new u-joints in the back and it happens in 2WD. If you need more info ask away. I will send a video in the morning of what it sounds like. it's constant like clunk clunk clunk clunk or pop pop pop pop They're short and occur about every 1 rotation

 

Jack up the back, pull the diff cover, start up, put in gear, let idle (have tree or similar object in front of vehicle in case something lets go) and observe. Prob something to do with the welding.

 

Or something may reveal itself when you simply pull the diff cover and spin the gears around.

 

Which rear axle?

 

The one that the weld on the spiders broke.