My 89 carrera has a stainless steel B&B muffler (from PO), that was really nice sounding until recently. It sounded so good it was all but impossible to roll the windows up.
However, it has started producing an irritating vibrating buzz between 2-4k rpm.
Almost sounds like an exhaust leak, but we've determined it to be a vibration inside the muffler itself. Like part of something has broken partially loose. Applying pressure with a stick against the body of the muffler, we can make the sound come and go.
Anyone have experience with a similar situation and tried a repair?
Any procedural tips or precautions appreciated.
Seems like perforated baffles are usually attached to the end pieces.
We were thinking of cutting that open to start with.
Comments? Observations? Suggestions?
..