Bending exhaust pipe at home. Using the 1 ½ shoe and pipe supports which is the closest match to the 1 78 tail pipe tubing here are the results. Exhaust is not critical in most situations so structural integrity is not paramount. Clamp the exhaust pipe firmly in the vise with the mark you made in Step 1 just visible at the vise. Hold the pipe in place for 10 to 15 seconds to allow the pipe to cool slightly and hold its shape.
Also you have to think about the maximum radius of the bend and the restrictions you be creating in the pipes. Improper bending of exhaust pipes especially when making tighter bends can ruin the pipe by. Step 5 Heat Pipe and Bend. Bending the exhaust tube yourself is a delicate process but entirely feasible with the right equipment. So you have some pipe that needs to be bent but you dont have a pipe bender.
In such a situation you want to avoid any offset or slope of 45 degrees or more. DIY exhaust pipe bending is a cheaper alternative to purchasing pre-bent pipes. Bending allows one to replace a rusty or leaking pipe efficiently without wasting time. Some samples of bending exhaust tubing with a Greenlee 880 one shot rigid conduit bender. How to bend your own custom exhaust pipes Step 1 Design Pipe. Merely packing the pipe with sand and welding caps to bend in a junk pipe bender would be fine though. You dont have to worry about slag since there will be no flux when welding your exhaust. For more complex systems youll need a bunch of universal bends or sometime the header companies will sell you a box of header primary tubes.