Why is my motorcycle exhaust glowing red?
Why is my motorcycle exhaust glowing red? What is a glowing red hot exhaust after all? The exhaust glows red when the metal heats up to where it's getting closer to its melting point. But there is no risk of the metal actually melting, as this requires quite a bit more heat, even from the point where it is visibly glowing red. Is it normal to have a red hot exhaust manifold? It is NORMAL for a heavily loaded engine to have a red-hot exhaust manifold. Many years ago I witnessed a motor oil test at Phillips Petroleum Company’s R&D...