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Frequently Asked Questions
A camshaft controls the opening and closing of the engine’s intake and exhaust valves. It plays a crucial role in the engine’s breathing process and directly affects power, torque, and efficiency. Performance camshafts are designed to improve these characteristics by altering timing, lift, and duration.
A rev kit is a set of components—usually valve springs, retainers, and sometimes pushrods—designed to stabilize the valve train at high RPMs. It helps prevent valve float and allows the engine to safely rev higher, making it ideal for racing or high-performance applications.
Often, yes. A performance camshaft usually has more aggressive lift and duration, which puts extra stress on the valve train. A rev kit ensures that your upgraded setup can handle the increased demands, especially at higher RPMs.
A camshaft upgrade can significantly increase horsepower and torque by improving the engine’s airflow. Depending on the cam profile, it can shift the power band higher or broaden it, resulting in better top-end power or improved mid-range torque.
Valve float occurs when the valve springs can’t keep up with the camshaft at high RPM, causing the valves to stay open longer than they should—or not close at all. A rev kit uses stiffer springs and stronger components to maintain precise valve control, preventing float.
It depends on the cam profile. Aggressive cams often produce a lopey or rough idle, which many enthusiasts like. However, milder performance cams can deliver gains without significantly affecting idle quality.
Yes, but it’s important to choose components that are compatible with your engine’s compression ratio, fuel system, and ECU tuning. In many cases, supporting upgrades like tuning, better valve springs, and stronger pushrods are recommended.
Hydraulic cams use oil pressure to maintain valve lash automatically, making them quieter and lower-maintenance. Solid cams require manual adjustment of lash but are preferred for race engines due to their precision and higher RPM capabilities.
Yes, a tune is highly recommended. Changing the camshaft affects air and fuel flow, so tuning the ECU ensures the engine runs efficiently and safely, unlocking the full potential of your upgrade.
Not directly. A rev kit doesn’t add power by itself but supports the engine in reaching higher RPMs safely, where power gains from a camshaft or other mods can be realized. It’s more of a protective and enabling upgrade.
