Torque Converter Slip Ratio

Torque Converter Slip Ratio FAQ

What is torque converter slippage and why is it important?

Torque converter slippage is important during acceleration, but it becomes a liability once the vehicle reaches cruising speed. That's why virtually all modern torque converters use a lock-up clutch. The purpose of the lockup clutch is to directly connect the engine and the transmission once slippage is no longer needed.

How does a torque converter affect the rpm?

When your torque converter prevents the power transfer from your engine to your transmission, it increases the engine’s RPM stalls. For example, when you press down on your gas pedal, the stall speed is the gap between where your vehicle ideals and begins to move.

What torque converter do i need for drag racing?

Drag racing engines produce power at high RPM, so drag racers will often use a converter with a high stall speed, which will slip until the engine is producing maximum power. Diesel trucks put out most of their power at low RPM, so a torque converter with a low stall speed is the best way to get moving with a heavy load.

What is a torque converter on a go kart?

Torque converters are great for lower end torque, as they have the ability to adjust the gear ratio depending on the engine’s RPM. This makes it ideal for heavier or off-road go-karts. On the other hand, a regular clutch maintains the same gear ratio all the time.