CREATE TABLE table_name_43 (year INT, entrant VARCHAR, engine VARCHAR)

How many years did Barclay Nordica Arrows BMW enter with Cosworth v8 engine?
SELECT SUM(year) FROM table_name_43 WHERE entrant = "barclay nordica arrows bmw" AND engine = "cosworth v8"
SELECT SUM("year") FROM "table_name_43" WHERE "barclay nordica arrows bmw" = "entrant" AND "cosworth v8" = "engine"