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5 votes
Accepted

Rust precautions when enlarging two holes

Zinc spray ought to be enough. Alternatively rust converter. The most important thing is the preparation: a nice clean degreased hole (Brake cleaner and compressed air)
Martin's user avatar
  • 8,458
4 votes

Finding banging/clanking noises when driving over rough surfaces or potholes

You didn't mention checking the exhaust system. If an exhaust hangar has rusted away or broken, some part of the exhaust system could be swinging and clanking against the underbody. If you can put the ...
MTA's user avatar
  • 6,405

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