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OK, I loosened the top of the exhaust pipe, the one that has the ninety degree bend at the top.
I actually removed it and THEN started the engine. Much quieter, BUT exhaust smoke level started about the top of the hood and went straight up. No big deal sitting in my driveway, but I'm CONFIDENT that on the road, the passenger side would be 'painted black' with soot fairly soon.
So back on the top pipe went. BEFORE I tightened it down, I rotated it 360 degrees, trying to find the 'quietest' spot to have the exhaust flow. Pointing the top of the pipe back OVER the cab seemed to be the quietest, BUT again, if I ever remove the hard top the exhaust could fill the cab fairly quickly.
So I kept experimenting. I finally settled on 180 degrees from where I had it pointing over the cab. This meant that the exhaust now pointed forward at an angle. This was the second quietest position.
In talking with my neighbor after he looked at it, he asked, "Won't that mean you are forcing air back down the pipe, perhaps creating some form of backpressure?"
After looking at it a while longer, I agreed. So I rotated it about 45 degrees from that point. So NOW my exhaust pipe points to the rear, but it's NOT 90 degrees to the hood, which is how I got it and how MOST of the deuces I've seen are also set up. By rotating it backward about twenty degrees from it's original position, the sound inside the cab is reduced. I will have to go out and purchase a decibel meter to see HOW much less.
Just curious if anyone else has played with how their exhausts flows and what it does to the sound of the exhaust.
I actually removed it and THEN started the engine. Much quieter, BUT exhaust smoke level started about the top of the hood and went straight up. No big deal sitting in my driveway, but I'm CONFIDENT that on the road, the passenger side would be 'painted black' with soot fairly soon.
So back on the top pipe went. BEFORE I tightened it down, I rotated it 360 degrees, trying to find the 'quietest' spot to have the exhaust flow. Pointing the top of the pipe back OVER the cab seemed to be the quietest, BUT again, if I ever remove the hard top the exhaust could fill the cab fairly quickly.
So I kept experimenting. I finally settled on 180 degrees from where I had it pointing over the cab. This meant that the exhaust now pointed forward at an angle. This was the second quietest position.
In talking with my neighbor after he looked at it, he asked, "Won't that mean you are forcing air back down the pipe, perhaps creating some form of backpressure?"
After looking at it a while longer, I agreed. So I rotated it about 45 degrees from that point. So NOW my exhaust pipe points to the rear, but it's NOT 90 degrees to the hood, which is how I got it and how MOST of the deuces I've seen are also set up. By rotating it backward about twenty degrees from it's original position, the sound inside the cab is reduced. I will have to go out and purchase a decibel meter to see HOW much less.
Just curious if anyone else has played with how their exhausts flows and what it does to the sound of the exhaust.