Since this is a rather bizarre occurrence, I'm just trying to think outside the box...perhaps I was in the wrong box to begin with, though. But I have witnessed the crank pulley riding on the front motor mount with these engines.
How about: Gyroscopic precession acting upon the rotating fan when making a hard right turn, combined with a worn water pump bearing causing it to bind? Or perhaps acting upon the rotating assembly in the alternator causing it to bind?
Perhaps the fan belt is the wrong width and it is riding too deep or too shallow?
I think Carl has summed this up nicely.
However, both of your out-of-the-box suppositions are easily tested:
- turn off the engine
- take off the fan belt
- spin the fan and look/listen
- spin the generator pulley and loo/listen
Nonetheless, I learned something from your post:
Gyroscopic precession is a phenomenon occurring in rotating bodies in which an applied force is manifested 90 degrees later in the direction of rotation from where the force was applied.
???
