Doing a swap in a 2008 335xi (6HP21X) using a 8HP45X from a 2015 328xi. The bellhousing had one bolt hole that had to be drilled out and matched up otherwise. Using a N55 torque converter and old N54 flexplate.
Issue I ran into is that the old 6HP21 is around 25 1/4" long, the 8HP45 is 26 1/4" long. Anybody ever see this before? From my research, all of the 8HP45 are 670mm so right around what I'm seeing at just over 26" long, and as far as I can tell the 6HP21 never changed for LCI.
That extra inch makes the mount fail to line up and the driveshafts not fit.
Issue I ran into is that the old 6HP21 is around 25 1/4" long, the 8HP45 is 26 1/4" long. Anybody ever see this before? From my research, all of the 8HP45 are 670mm so right around what I'm seeing at just over 26" long, and as far as I can tell the 6HP21 never changed for LCI.
That extra inch makes the mount fail to line up and the driveshafts not fit.
