they sell some stuff you can pour in new pipes that will stop that. Its a ceramic coating but the pies must be clean inside.
But yes I am fixing my exhaust on my car as at each outside bend it has rusted. and a few spots it rusted / blew through.
Everywhere else is nice looking. But its the same thing. Where the exhaust bends, gets super heated and speed up corrosion.
> "I'm curious if you know why that portion of your exhaust is discoloring?
> Looks strange to me. I always thought that the farther from the head you
> get the cooler things would get. If your engine is running so hot that the
> muffler is turning colors I would begin to wonder about the temps at the
> head.
> "
>
>
> It's not uncommon for Cobras and Jardines to do this, because that is where
> the plate is in the exhaust baffle. The flow comes down the middle of the
> baffle until it reaches that plate, then it has to go out through all the
> little holes in the baffle to space between the baffle and the chrome
> canister. After passing the plate location, the flow must then go back
> through the little holes into the center of the baffle, and then out the
> hole in the end. Wherever the flow turns, it concentrates heat. My
> Jardines have just a bit of discoloration in the same spot, although it is
> much less drastic. My pipes are also discolored where the rear header
> takes a turn and where the pipe turns into the muffler. The funny thing is
> that I see bikes with all different variations of discoloration on similar
> aftermarket pipes, and I don't know what to attribute it to. Riding
> habits? Excessive warm up time?
>
> Jeremy
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