Post your general FAQs, comments & questions regarding all Ducati engine & transmission restoration here. [Specific engine FAQs should go in the 'BevelHeaven Garage' section.]
Hello Barthol, I should advise you that the best thing to do is pick up Ian Falloon's books, ORIGINAL SPORT AND SUPERSPORT and then also CATALOG OF DUCATI MOTORCYCLES - I stock both books. You will get the low down on these models.
The differences are not so many, but depending on year etc. The most obvious is earlier 900SS has Ducati Electronica ignition, later 900SS, SD and SSD comes with Bosch ignition. Also, SD and SSD has a starter motor, only some SD had a kick start also... no SS bikes came with a starter.
Then you get into cams, cranks and crank bearings etc, all expained in the books.