PERFORMANCE TORQUE CONVERTERS OF TEXAS LLC

 4110 S. Eden Road, Kennedale, Texas 76060 - (817) 563-5556

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Learn the process from start to finish.

Cutting the weld

Cleaning the components

Custom fit machining

Inspection and replacement of worn or damaged parts

Custom building

Pressure testing

Precision balancing

 

 

        What is a Torque Converter?

A torque converter is a fluid coupling device which transfers power from the engine to the transmission. The transmission fluid is pulled into the converter and pushed outward with a centrifugal force. If your vehicle has an automatic transmission, you have a torque converter. It consists of three main internal components, the turbine, the stator, and the impeller pump.  Each of these components has fins which direct the flow of fluid through the converter.

 

Torque converter components - The Pieces of the Puzzle

Cover attaches to the engine flexplate. The cover should remain rigid under torsional and thrust stress, and from the internal hydraulic pressure generated by the converter.

Turbine attaches to the drive train via a spline fit to the input shaft of the transmission.

Stator changes the fluid flow between the turbine and the pump. It is what makes the torque converter a multiplier and not strictly a fluid coupler. In order for the stator to function properly the sprag must work as designed.

 

 

 

The sprag is a one-way, mechanical clutch inside the stator. It locks the stator in place while the converter is in stall mode. It also allows the stator to spin with the rest of the converter after the turbine speed nears the pump speed. This makes for a more efficient and less restrictive fluid flow.

Impeller Pump is a centrifugal pump which attaches to the transmission side. It has a series of fins which drive the fluid into the turbine. The size of the torque converter and pump and the number and shape of the fins all affect the characteristics of the converter. It is important that the fins of the impeller pump are adequately reinforced against fatigue and the outside housing does not distort under stress.

Fin brazing (furnace or spot brazing) enhances the strength of the fins. The housing and fins should act as one unit. By reducing the amount of flex, fins are less likely to break under pressure. The more rigid the fins stay while under pressure, the more consistent the behavior of the torque converter.

Needle bearings are important because they help the torque converter withstand more pressure and provide less drag inside the converter.

 

 

 

 

 

 

 

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