This Engine Rebuild Manual covers a range of Nissan & Datsun vehicles equipped with the L-series engine family. This includes inline 4-cylinder and inline 6-cylinder configurations, specifically detailing models applicable to L13, L14, L16, L18, L20A, L20B, L24, L26, and L28 engines. These engines, known for their Overhead Cam (OHC) design, have powered many vehicles across various production years, offering a blend of performance and durability. This manual focuses on providing comprehensive information for maintaining and restoring these robust powerplants. The purpose of this manual, authored by Tom Monroe, is to serve as an authoritative guide for engine rebuilding and overhaul procedures. It provides essential details including parts identification and interchangeability, crucial for sourcing the correct components. Furthermore, it offers step-by-step rebuilding instructions, ensuring that owners, mechanics, and technicians can perform complex engine work with confidence. The manual is presented in English and covers a wide array of engine displacements from 1.3 to 2.8 liters, along with information pertinent to both manual and automatic transmissions.