Thank you for additional ideas:

I was at Indy today but will have to set appointment next week, he was covered up. I mentioned sound to him, he is thinking warped rotor as possibility, but we will check all these good ideas.

It runs quiet otherwise and only does it on right "at speed" turns like curves over 30 MPH, but clears, goes away, when you get straight after you leave the turn.

__________________
1982 300SD