The Serious FresheningGo to <Last, Summary, Next>Chassis—Hidden Glass-Pack Muffler
Completed: 2008-01-05 — Started: 2008-01-11
Work Completed: While having the previous exhaust work done in 2006, Andrew from 30 Minute Muffler offers to do something to improve the existing empty, hollow muffler on Bugsby, but Lynn declines. Now he thinks better of that decision. Since Lynn does not want to alter the appearance of the exhaust, Andrew suggests installing a new 18" glass pack completely within the existing 22" muffler body. Lynn agrees. Did you know that some (maybe all?) glass-pack mufflers are directional? As can be seen in the right-most photo above, little louvers of metal expose the outer chamber of the glass pack to the inner pipe. These louvers are open in only one direction. If installed with the louvers open to the incoming exhaust gas (toward the motor), the glass pack does a better job of reducing the noise. If installed in the opposite direction, with the louvers open to the tail pipe, the glass pack is less effective in reducing the noise. As a consequence, you can tailor the amount of noise reduction you get by selecting the orientation of the installation. Lynn selects the maximum noise reduction direction. After all, the old exhaust is way too loud, and the 18" glass pack is very small. The result with Bugsby is very satisfactory. It is still not a quiet exhaust, but it is nowhere as obnoxious as it had been. Listen to the exhaust sound BEFORE and AFTER adding the hidden glass pack.
Work Remaining: Contact with your comments or questions Copyright © 2018 Lynn Kissel Last updated: May 24, 2009 |