This workshop repair service manual provides comprehensive information for the Datsun/Nissan H16 and H20 engines. These engines are known for their robust engineering and reliability, making them suitable for a variety of applications. This manual is designed to guide users through all aspects of engine repair and maintenance. The scope of this manual includes detailed repair procedures, technical specifications, and essential maintenance guidelines specifically for the H16R and H20 engine models. It serves as an indispensable resource for owners, mechanics, and technicians, enabling them to effectively maintain and repair these Datsun/Nissan engines, ensuring optimal performance and longevity.