With regards to the range of passages (ports) for controlling the oil move throughout the torque converter clutch, there are many types of torque converters: Inside a two-passage torque converter clutch actuation process (as in the images over), the lock-up clutch is installed around the turbine hub, before the turbine. https://arthurwywur.oblogation.com/33171560/the-torque-converter-clutch-diaries