georgekathe wrote on 12/31/69 at 16:00:04:maybe your bike is pretending to be a BMW!
they are famous for pipes blueing & many owners regard it as one of quirks & attractions to the bike!
That is a beamer trait for sure. The reason is that BMWs have single walled stainless steel pipes.
Many big twins also have single walled pipes that turn blue, but they are hidden with a full heat shield like the kind that Doc is looking for.
The Savage double walled header really doesn't blue as long as everything remains stock, but the backfires from that stock muffler cause people to change stuff and then the bluing begins.