How the Tulip Valve Actually Boosts Engine Flow
If you've ever torn down a cylinder head or spent too much time scrolling through performance parts catalogs, you've probably seen the tulip valve mentioned as a go-to for better airflow. It's one of those components that looks simple—almost elegant—but there's a surprising amount of physics packed into that specific curve. Instead of a flat, nail-like head, these valves have a smooth, trumpeted transition from the stem to the valve face, and that little bit of extra radius can change a whole lot about how your engine breathes. ...