GP wrote:I've only ever seen welded diffs used on the dirt (speedway) On the road it would make any car handle bad and in the wet you would be sideways everywhere.
Welding a diff is not as easy as it sounds either, Have done a few for the speedway and found that they have to be machined so that when it's welded the axles are running true otherwise Kaboom
I've had several diffs welded and never had to machine any of them.. amd ran them on bitumen circuits for 10 years without issues.
As mentioned earlier it more depends on the quality of the welding as to whether they go bang or not..