Bending exhaust pipe with torch. Light the torch following the directions that came with it heat the pipe at the point of the bend until pliable and pull the pipe towards you to make the bend. How do you bend an exhaust pipe by hand. If you are bending a pipe in more than one location allow it to cool completely between bends. Mig welding can cause wire to be pushed inside the pipes and makes a big fat ugly weld. Starting with a length of straight pipe the installer manually feeds it into the banding machines backing shoes. A tig welder uses an electric arch to melt the metal and the torch uses flame. However the best way to weld exhaust is with a tig welder or oxy-acetylene. The double skinned original down pipes headers have a 35mm OD as do the pattern ones in my photo.
Artist Kevin Caron shows two ways to shape metal pipe – should you roll or should you bend it. Heat the pipe at the desired bending point with a MAPP gas torch until the pipe has a dull reddish glow. Remember to heat the whole area and not just one side of the pipe as this will help it bend evenly. Exhaust Pipe Bending and Installation Step 1. Step 6 – Cut and Clean Pipes. You will soon find out just how cheap most muffler shops are. The double skinned original down pipes headers have a 35mm OD as do the pattern ones in my photo. Similarly how do you bend a exhaust with a torch.
You can get large radius pretty consistent bends with this method. If the bends are gradual it will work like you have doneA good way is to weld a piece of flat on some tube and then pack with DRY sand and tap the length of tubing as you add sand so it settles well in the tube when full weld plug on end to seal bend as you please with heat on the outside radius mainly as this side stretchestry and heat the full length of the. Exhaust Pipe Bending and Installation Step 1. It is the same process as tig welding. FWIW even a MAP torch puts out enough heat for smaller tubing using sand bending I made a rack that way out of 12 16ga and it came out OKhave also seen a few videos on YouTube where charcoal was used to heat up bigger tubing this one is especially interesting as it is also on making an exhaust pipe for a vintage bike. Hold the pipe in place for 10 to 15 seconds to allow the pipe to cool slightly and hold its shape. Next using thick gloves I applied force to the end of the pipe and in small steps kept bending it until it was in the right shape. Remove the pipe from your jig.