The Nissan SR engine series is a 1.6 L, 1.8 L, or 2.0 L straight-4 4-stroke. It is an aluminum DOHC 4-valve design, with some versions incorporating variable valve timing. The engine was used in many small to medium Nissan vehicles, including high-performance turbocharged variants. The Nissan SR20DE engine is one of the most successful engines [...]