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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
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Your Ride: 1994 325is
Favorite exhaust rust busting technique?
I am trying to drop the exhaust on my 94 325is for a flex disk replacement, and while the nuts on one exhaust flange came off fairly easily (albeit with an impact wrench), the other flange nuts refuse to budge, no matter how long I have the impact wrench hammering away. Of course, this is the rear-most pipe, a bit harder to get at. Yes, I used some lube, it's soaking overnight for another try.
Does anyone have a good technique for getting things like this off without ruining the studs on the manifold? Thanks for any insights you may have.