Older thread but I'm reviving it. After replacing my bent phb with a used straight one I got from a member here, I've been getting some clunking from it. It didn't start immediately, but a friend and I diagnosed the sound yesterday. It's been going on for a week or so. It's the driver side end. Driving me nuts! It only makes the noise with selective movements, rocking back and forth usually creates it, so for instance anytime I drive over a curb on a driveway causes it. Wondering if I can find some poly bushings for it, or if I flip it around it will go away. Anyone ever source some poly bushings?
I had the exact same thing going on after I did my rear axle swap. IIRC on of the mount bolts was loose. I loctited it back in there good and tight and it hasn't don it since. I figured the noise came from the bushing inner core sliding back and forth and hitting the bolt a bit as I turned or hit bumps. I still have my bent PHB in there and my straight one on a shelf... I should swap that out this summer.
BTW, I think I was able to get under the back end and shove the body side to side and see a bit of movement in one of the bushings. You might try that to confirm, though you may not be able to shove it hard enough to get it to move.