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How to Mark & Bend Exhaust Pipe for Exhaust Systems

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Part of the video series: Performance Exhaust Systems: Car Restoration Tips

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Summary: Mark exhaust pipe or tailpipe to make sure the very precise, custom bends in the pipe are accurate when installing high-performance exhaust on a car; learn how in this free auto-repair video.

Views: 820 | Tags: repair, body, shop, hot, car, automotive, system, classic, restore, restoration, rod, exhaust, muffler, car repair, classic cars

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About the Expert

Doug Jenkins Doug, of “Doug Jenkins Custom Hot Rods”, not only servers the entire nation, but even customers outside the U.S have found the shop's services indispensable. ... read more

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Video Transcript

How to Mark & Bend Exhaust Pipe for Exhaust Systems

Hi I'm Doug. I work with twenty great guys in St. Louis at Doug Jenkins Custom Hot Rods, and we're going to do some work for you today on Expert Village. So Dave's got a piece of tape on the pipe bender where he's kind of keeping track of his measurements so that when he bends the other side it kind of matches. No sense guessing on everything on both sides of the car. It's important when working with this really large diameter pipe that your bends be as gradual as possible. Three inch pipe would just as soon fold up and pucker up and make a big mess as it would bend. So we try to make our bends as far ahead of time as possible and make them as slight as possible. He's got the pipe laying on the floor, it's a good flat plane, so he can make sure that the apex of his bend, of all his bends are parallel. So you can see here on the bender, you kind of have to guess where level is, but he made a mark while it was on the floor that will help him keep it level. And you can see even with those gradual bends that he's making we still end up with a pretty substantial deformation of the pipe. The only solution to that deformation of the pipe, wherever the pipe gets smaller like that it hurts the performance of the car it slows down the exhaust gases, the only solution is a mandrel bent exhaust system. You can buy pre-bent pieces and cut and piece them together.

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