What does intake manifold plenum do?
What does intake manifold plenum do? Intake Manifold Plenum The plenum is the large cavity at the top of the manifold. It acts as a reservoir, holding the air until it's ready to go into the cylinders. The plenum evenly distributes the air to the runners before it passes through the intake valve. The size of the plenum impacts the engine's performance. How much torque do you need for intake manifold? Tighten the upper intake manifold bolts to 23 N·m (17 lb ft). mportant: Tighten the intake manifold bolts in a circular pattern starting at the center (long bolts) and...