So, with the recent progress on the chassis and body, i thought it’s time to kickstart some long-pending projects. One thing i had in mind for a while was to fix the differntial. It was not really broken but i never liked the red colour which the previous owner applied to it everywhere. also the upper plug was completely stuck, there were some strange rubber bumper-things added in some places, the breather vent was closed with some kind of wax or whatever this was and the mean seal was leaking. It’s an original European 3.9 R180 Open Differential as standard on all 5-speed Manual Z’s (= all european spec cars).…