Quote:
Originally Posted by eralha
wow... that is nightmare fuel! hope you find the issue, keep us posted. good luck.
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it was to me for sure. I love this bike like no other I've had. Says a lot since I hardly ever get attached to inanimate objects.
The noise turned out to be a left side main bearing. It lost the cage and allowed the balls to bunch up together leaving one side of the crank unsupported. That was the cyclic WHOOMP WHOOMP noise.
I never figured out why anyone would focus on the PV assemble since it doesn't rotate or do anything cyclic across all revs but it was adjusted properly and undamaged for those curious.
A small piece of the cage was stuck on the bottom of the rod, and about 1/8th was still in the bearing. Appears that most of the cage was evidently ejected out of the exhaust. no visible cylinder damage and no apparent rod or bearing damage on it. Thank the heavens
Thanks for everyone helping me brainstorm when I was too distraught to think clearly.