How many movies have Gökhan Akçura and Ümit Efekan collaborated on?

They have worked on 2 movies together! Their first movie together was Kızlar Sınıfı (1984) while their highest rated movie together was Ya Ya Ya Şa Şa Şa (1985). They have not worked together since Ya Ya Ya Şa Şa Şa (1985).