I know why the cranks whips,I can also tell you that the brg mfg had problems during the develpment of the Modular V6,the overall lenght an stiffness was reduced from the Porsche Proto V6,early protos also HAD to be run on Mobil 1 synth,the first batc of 2.5's ever out of C/land Engine plant were QC rejected the day before they were sent to K/C Assembly, all the cranks were changed etc etc...Yes I know what happened!
