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Discussion Starter · #1 ·
Hey all- I plugged 2 of the 4 1/2" holes I drilled in mufflers by just tapping hole with 1/4" pipe tap and screwing self sealing pipe plugs in hole. I thought it would be neat for anyone not liking the sound after drilling. I am just trying it to tune to my liking. The 2 out of 4 holes plugged is better than 4 open. I am going to try just plugging 1 out of 4 tomorrow and see how that sounds. The self sealing plugs should stay in there ok. For those of you not familiar with pipe plugs- 1/4" is for the inside diameter of 1/4" pipe, but outside diameter is near 1/2". The plug and pipe tap are tapered. So only run tap in far enough till when you try plug, it will tighten without threading all the way through. Never tap hole all the way to end of threads on tap or plug will just thread right through the hole. Self sealing plugs have a dryed red sealant on threads. Barbecue Paint will hide these well enough.
 

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Thats a great idea! Everybody has a different opinion on what a bike should sound like. Nice to be able to tune to your liking. Myself... wide open, no baffles - if you can't be seen, you might as well be heard!
 

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Nickmo said:
Thats a great idea! Everybody has a different opinion on what a bike should sound like. Nice to be able to tune to your liking. Myself... wide open, no baffles - if you can't be seen, you might as well be heard!
that is my whole point of wanting to put some new pipes on mine... at least then the people driving in the lane next to you will know you are there... I have had someone move into my lane on more than one occasion and i have found that having a loud bike reduces that chance but there is still a chance they will still come over...
 

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KCL-LABRAT said:
i agree, loud pipes save lives
yes sir you are right... vehicles have blind spots... just big enough for a motorcyclist to be... but of course lets not forget the blind spot that the driver has in their head... lol
 

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I agree loud pipes can save lives, but after so many yrs of loud quads and dirtbikes, I am content with the quiet for now.
 

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Discussion Starter · #11 ·
I checked these plugs after 280 miles and they are still tight!
 
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