CREATE TABLE table_name_10 (year VARCHAR, chassis VARCHAR, engine VARCHAR, rank VARCHAR)
How many years has an engine of audi 3.6l turbo v8 and 1st as the rank with an audi r8r as the chassis?
SELECT COUNT(year) FROM table_name_10 WHERE engine = "audi 3.6l turbo v8" AND rank = "1st" AND chassis = "audi r8r"