On our 93 the bracket that shares two of the large bolts that hold the M47 to the engine at the bell housing was broken where it connects to the top of the heat shield. It made a higher pitched rattling noise at about 3000 rpms. You can see the spot by opening the hood, standing on the passenger side of the car and looking very carefully at where this bracket connects to the top to the shield. Have an assistant push the exhaust system around while you watch with a good flashlight.
BTW, how many guys run their cars without this bracket connected? Our 93 was broken and so was my son's 81. On neither car was the exhaust system receiving any support from this bracket.
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Thanks for all the help. DougC. 1981 242 Brick Off Blocks, Turbo bars and wheels, M46. 1990 245, auto, 113k. 1993 245, M47, 154k.
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