This Tiny Engine Part Changed Everything!
From Engineering Explained. Combustion engine valvetrains have evolved over time. While flathead and overhead valve designs were more popular in the past, most modern engines run overhead cam designs. Sponsored by Mobil 1 – https://www.mobil.com/en/lubricants/ Three common combustion engine valvetrain designs are flathead, overhead valve (OHV), and overhead cam (OHC). Many older cars have engines…