qs about your tweety fix
Posted: Sat Aug 19, 2006 11:24 am
James W. Flower wrote:
The original baffle sits inside a slightly larger tube in the back of the muffler. When you cut through the back, using the hole saw, you are cutting between the baffle and the tube that it sits in. After you break the baffle loose at the front you will look in and see the smooth larger tube that the baffle sat in ending in a taper at the front. You will see the back of the deflector for the spark arrester through the hole in the front. Do not open the front of the remaining smooth tube as that will degrade the effectiveness of the spark arrestor and make it slightly louder. The replacement tube needs to stick out the back of the muffler about 4 inchs and into the tube far enough to be held in place with muffler cement. If you look at the pictures you will see that I cut a piece of sheet steel and brazed the tailpipe extension to that and then screwed that to the back of the muffler. I sealed it better with muffler cement between the extension and the back of the muffler. If you have the ability to braze or weld I would recommend doing the same as I did. If not cementing a tube inside the back of the muffler seems to be a good method. I made my extension the same size as the tube the baffle was mounted in, if you want it a little quieter you could make the extension the same diameter as the baffle you removed.> Hi Alan-- Thanks for posting your Tweety fix. I can figure out most > of the details on my own, EXCEPT: 1. Is the replacement tube meant > to be the same length as the original, and does it slip into a sleeve > of some kind at the forward (inner) end? The original tube in your > picture looks like it did (assuming the right end of the original > tube in your Picture 3.jpg is the inner, forward end).
It seems to be a little louder but not much. People that have been around it before and after haven't said anything. Alan Henderson A13 Iowa> 2. Can you estimate the increase in noise? I'm on the "loud pipes > tick people off" side of the discussion, though I'm sure that > sometime, somewhere loud pipes have helped avoid a crash. Thanks > again-- James >