How to repair a broken motorcycle exhaust pipe?

[DaisyAnn]

Completely remove the damaged area, then find a piece of iron or stainless steel sheet larger than the damaged area to cover it, and fully weld the joint. Argon arc welding is preferred, but electric welding can also be used, though it requires a highly skilled hand.

[Sean]

From my decade of motorcycle riding experience, exhaust pipe hole repairs depend on location. If there's a small rust hole at the muffler tip, you can try high-temperature sealant as a temporary fix, but it's just a band-aid solution. For mid-section cracks with exhaust leaks, it's best to take it to a repair shop for professional patching and welding - DIY AB glue can't withstand exhaust heat. If the front section is damaged, don't bother repairing - just replace the pipe. The front section reaches 300-400°C, causing adhesives and welding rods to fail. For emergencies, motorcycle parts stores sell exhaust-specific repair patches that last 1-2 months, but remember to wear thick gloves - those pipes get extremely hot!

[OLucille]

Don't rush to weld the exhaust pipe if you find a leak - first assess if it's worth repairing. If the muffler on an old car is rusted through like a honeycomb, patching one spot just leads to leaks elsewhere, so replacement is better. For small dents in metal pipes caused by rocks, use exhaust-specific putty to fill, sand, and repaint - this can be done for 20 yuan at auto parts markets. Pay special attention to the hanger positions, as these areas are prone to vibration cracks; just have an argon arc welder make a few stitches there. Interestingly, holes in modified car exhausts can create unique sound effects, but be careful not to attract police attention with excessive noise. For DIY repairs, keep an infrared thermometer handy and only work when pipes cool below 50°C.