CROSS PLANE VS. FLAT PLANE CRANK #suprasound #supraturbo #supra #supramk4 | Mr. Car Sounds

Because of the firing order on a flat-plane crank, when the exhaust comes out of the combustion chamber somewhere around 1,300-1,500 feet per second, it jump-starts the intake port to move. This jump-start makes the engine more efficient. A flat-plane crank doesn’t necessarily make more horsepower. Still, the torque curve flattens out for a more extended period because it breathes better, creating a more usable powerband. Plus, if you’re getting a more efficient fill of air in the cylinder, you

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