Toughgrade

Are your left and right rear tires same size (diameter), inflated the same, and share equal tread wear? LSD diffs don't like inconsistent tire diameter, it works the clutch pack like you are always going around a corner, results in hot running and possibly chatter if you don't have lsd modifier fluid added.

Porsche part number on it: 914 624 114 11 Porsche 914 left headlight motor. The black knob sticking out the end of the motor is so you can manually raise the headlight when the electrics crap out. I don't own a 914. Never have. Never will. Ever.

Looks like it might be the wedge from of the end of a hammer handle. http://www.amazon.co.uk/Draper-1142-LAST-SLEDGE-HAMMER/dp/B0002BUTDK