Flat-Plane Crankshaft
A flat-plane crankshaft has crank pins at 180 degrees, letting a V8 rev higher with a sharper sound but more vibration.
What is Flat-Plane Crankshaft?
It is used in many high-performance V8 engines. Each bank fires evenly, which helps exhaust tuning. It is lighter than a crossplane crank. Flat-plane V8s are often associated with Italian sports cars.
How it works
With all pins in one plane, the engine behaves like two inline-four engines on one crank.
Why it matters for your car
Secondary vibrations are higher than with a crossplane design. It is less suited to very large, low-revving engines.
Other terms
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- Brake Shoe
- Crankshaft
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- Liftback
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