Torque converter Archives - Transmission Digest
6R80 whirring noise: TCC slip or engine surge?

About a month ago, we at Certified Transmission received a 2015 Ford Expedition 4WD at the shop. It was equipped with a 3.5L Turbo V6 engine and a 6R80 transmission. The complaint read, “RPMs fluctuate up and down and there is a whirring noise.” The vehicle was brought to us by one of our wholesale

Schaeffler releases TorCon 6L80 torque converter

Schaeffler announced the debut of the LuK TorCon 6L80 torque converter, which the company notes is all-new and not remanufactured. The TorCon 6L80 is compatible with 2007-2020 GM trucks, vans and SUVs with a 5.3L, with a current VIO of 6,211,856, according to Schaeffler. Schaeffler claims that the product’s design leads it to last up to

The torque converter can of worms: Lockup and aftermarket programming

Lockup torque converters have been around now for some time. They came into production around the time when fuel mileage demands were put into effect by the government, and the auto manufacturers needed to do something to better connect the fluid coupling (torque converter) of the automatic transmission to the motor. By doing this, OEMs

tascfeature-1400
Raybestos adds new Toyota UA80 / UB80 converter clutch plates

Raybestos has introduced a series of Toyota UA80 and UB80 converter clutch plates. They include:

The Subaru mystery burn

The Subaru TR580 transmission is known for having torque converter clutch solenoid failures. An example of this can be seen in Figures 1 (above) and 2 (below). The solenoid resistance should be between 10 to 13.5 ohms. The resistance right at the solenoid itself on the valve body is close to 38 ohms. And as

Tech-Speak-May-Figure-1-1400
Inside Toyota’s UA-UB80E/F torque converter

The UB80E/F family of transmissions used in Toyota L4 applications, and the UA80E/F used in V6 engine applications, should not be confused with the AWF8G30 transmission. Although similar, they are significantly different.  The converters used in these applications are like other known systems. Within this system, there are two very important sealing rings that need

Looking for the cause of repeated 6T40 torque converter failure

The converter clutch was applied just enough to drag but not enough to kill the engine.

Tech-Talk-Q4-Figure-4-1400
Raybestos offers high carbon torque converter wafer for Ford 10R80

Raybestos has begun offering a high carbon torque converter wafer for Ford 10R80 transmissions. According to the company, it is a bond-in solution that flexes and conforms to fit to a conical surface. The company says that high carbon is a carbon impregnated friction material able to withstand very high temperatures. Raybestos recommends high carbon

Raybestos-Ford-10R80-friction-wafer-1400
TCRA 2023 annual meeting in pictures

I’m not sure where all of the years went, but it was a quarter century ago that Corky and Carole Meyers turned an educational user group for their TCRS converter rebuilding equipment into an association of converter rebuilders: the Torque Converter Rebuilders Association (TCRA). The initial meetings of the association took place in Reno, NV

Sponsored video: GM eight-speed torque converter shudder solution

The full text of this sponsored video is below: Welcome to the GM eight speed torque converter shudder solution by LubeGard. General Motors has issued multiple technical service bulletins on torque converter clutch shudder in the eight-speed 8L45 and 8L90 transmissions. This problem affects over four million vehicles. That’s 11 different models across three different

Lubegard-video
5R110W Torque Converter Shims

Tri Component has announced a new addition to its line of torque converter shims. As used in early 5R110W converters, (p/n FW-2-17) solves the “cupping” problem associated with standard-sized shims. The FW-2-17 shim prevents bearing failures caused by the O.D. of the shim being too large. The company says to use the shim with its

Torque Converter Shims

Tri Component recently launched a new addition to its extensive line of torque converter shims. Part number FW-2-17, as used in early 5R110W converters, solves the “cupping” problem associated with standard-sized shims. This shim prevents bearing failures caused by too large O.D. of the shim. For optimum results, use with Tri Component’s fully enclosed bearing