TCRA News

The problem of bore wear on torque converter clutch pistons has been around since lockup torque converters were born. The rotational restriction on the pistons is […]

A 2001 Dodge Ram 2500 4×4, with a Cummins Diesel Engine and a 618 transmission, was brought to a transmission shop with a complaint of TCC […]

Last month we reviewed the results of chassis dyno testing done by Sean Boyle’s students in the automatic transmission class at Southern Illinois University. Four modified […]

When torque converters first transitioned from the early bolt-together units to the welded/sealed units of the present day, transmission shops were faced with a new challenge. […]

For several years, technicians have been trying to solve the mysterious cold stall issue in vehicles equipped with Mercedes 722.6 transmissions. When the problem was first […]

In 1955 the automotive industry finally standardized the shift quadrant on all vehicles. From that time forward, all shifters would read from left to right (or […]

Part 1 in a four-part series on torque converter modifications When the original equipment manufacturers create their driveline packages, they have many issues to consider, such […]

To help understand some of the flow issues that plague the 4R100 converter, it’s a good idea to look first at its ancestor, the E4OD. The […]

The new General Motors (G.M.) Captive Clutch has four (4) spring steel straps which restrict the rotational movement of the piston. One end of each strap […]