Torque converter Archives - Transmission Digest
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.

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

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

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

Video: Torque Converters

Dave takes us through some technical aspects of today’s torque converters. At the advent of the automatic, Dave says that torque converters were called Fluid Couplings because of how they moved ATF from the engine to the transmission and driveline.

Hyundai/Kia Torque Converter Clutches

Alto Products Corp. has announced four new one-sided friction clutch plates for the Hyundai/Kia A6LF1/2/3, A5HF1, and A6GF1 Torque Converters. Alto p/n 213714A and 213716A (A6LF1/2/3) feature the company’s G3 friction material, which is engineered to be durable for high-performance and converter applications. Alto p/n 213718A and 213720A (A5HF1, A6GF1) feature K2 high-energy friction material, designed for many different

Billet Bolt-Together Converters

From SunCoast, bolt-together converters made to lessen parasitic loss and quicken throttle response.

7 G-Tronic Plus Generation Six – Part 1

Mercedes’ 7-speed transmission known as the 7 G-Tronic is commonly referred to as the 722.9 transmission. This 5th generation of Mercedes’ transmission lineup made its first appearance in 2003. By 2010 a revised version of this transmission was developed making it the 6th generation of transmissions calling it the 7 G-Tronic Plus.

Toyota Flex Lock Up Converter (A Rose by any other Name)

Although one of the first lock-up torque converters to be used in an automatic transmission was in a Packard Ultramatic back in the fifties, lock-ups were just not that popular. Transmissions back then either used a fluid coupling or an “open” torque converter.