How Do You Weld A Rear Differential?
Welding the rear differential on an automobile has been popular for quite some time in both the drag racing and the off-road community. Welding the spider gears essentially locks both wheels together so that they always turn at exactly the same rate and with the same amount of torque. This greatly increases traction, which is why racers and trail drivers alike make the modification to their differentials. Remove the differential cover. Depending on the make and model of your vehicle, the rear differential cover will have anywhere from 10 to 14 bolts. These must be removed and set aside. Even with the bolts removed, the cover will likely want to stay on the housing, especially if RTV silicone was used. Gently pry the edges with a flat-head screwdriver to loosen the seal. Make sure you have an oil drain pan under it because when the cover comes off the oil will come out. Once the cover is off, scrape the gasket surface on both the housing and the cover clean with the flat-head screwdrive
