Making Custom Pipes From Your Stock Pipes
Still Too Loud, Adding Restriction
Okay, I put those pipes on and rode around with them. I got about 25 miles before I decided I still needed to tone them down a tad more. Besides, they were making a ringing sound that sounded like a telephone ringing inside the pipes when you got into it. I took them apart again and isolated the ringing problem to be the baffles ends. They would ring like a pipe organ when barely touched. I figured I would weld a washer onto the ends of the pipes to eliminate this. I then went shopping for some big washers. I figured I would use a 2" washer with a 3/4" hole. This would restrict the straight through exhaust flow. I did a bit of research as to tuning exhaust systems for bikes and determined that the harsh tones came from the straight through flow, as well as being able to fine tune the back-pressure at the same time. This is an old trick where you would weld a big washer onto a threaded rod and turn it inside the pipe to increase or decrease the back-pressure as needed.
I then realized that the extra "cups", for lack of a better term, on the ends of the pipes would eliminate the ringing altogether if they were cut off about 1", besides, the washer would be easier to weld since it fit nicely into this "cup". So we cut the ends off, fitted the washers and tacked them in enough to hold, but easy enough to remove if needed for future tuning. I will run like this awhile and see how they perform. If needed, I will increase or decrease the hole in the center of the washer to change the tone or the back-pressure. But That will be my experimental project for next season since it's about ready to snow here.
Here's the assembly after the modifications, as well as me helping. I am the most help to my friend Steve when I stay out of his way and open brews.
On to the next step, Let's add some more Packing.
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