With or without a clutch pedal, all cars have three elements that make up their performance combination: the car's weight, horsepower, and gear ratios. When a torque converter is added in place of a ...

Torque converters appear to be a bunch of mysterious whirlwind motion inside a spinning shell that transmits an engine’s power to the transmission and rear wheels. Although they seem complex, torque ...

Until now, the How It Works series has focused on how an engine makes power. Now we'll fill you in on how engine power is made usable to propel a car. The parts used to get the car moving consist of ...

BMW built its modern performance reputation on fast-shifting dual-clutch gearboxes, then quietly pivoted to conventional torque-converter automatics in many of its most important models. That change ...