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About Inlet Manifolds
The inlet manifold, also known as the intake manifold, is a system that distributes air to the cylinders of the engine. The inlet manifold carries the air and fuel from the carburetor.
The intake manifold must be large enough to ensure proper flow of the air-oil mixture, but small enough to maintain a high enough pressure on the fuel droplets to keep them in suspension. The bends should be increased to enhance fuel separation, and with smooth surfaces to increase charge distribution. It is important to ensure that all oil injections into the intake manifold are running correctly to ensure proper fuel separation.