Welding Car Differential. It might be a good idea to buy a used one to work on so you can still drive your car if you need to. Most people will probably remove the one thats in their car.
In order to weld a diff you need a diff. At something like 90 degrees of steering angle while driving at 5 mph or so the car unmistakenly informs you that the left and right wheels want to travel different distances but cannot. The concept behind welding your differential is essentially fixing the spider gears to the carrier or differential case so that both axle shafts move at the exact same rate.
A cracked panel a rust patch or a puncture in the body of the car.
I have welder many differentials in a LOT of Nissan 240sx. Maybe you discovered a cracked chassis a cracked muffler or a. When Do You Need to Weld. At something like 90 degrees of steering angle while driving at 5 mph or so the car unmistakenly informs you that the left and right wheels want to travel different distances but cannot.