Quieting 2 1/4 sweet thunder inserts
Thread Starter
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
Quieting 2 1/4 sweet thunder inserts
Has anyone had any success toning down the side pipe inserts? I don't know if the higher compression and small quench has any play in the decibels but I went with the 2 1/4" inserts thinking they wouldn't be as loud as the 2 1/2" but I'm going to get tickets for sure with this thing...
It sound amazing don't get me wrong just too loud! I got biker guys turning and giving ME dirty looks!
I actually think its louder than my bike was when I tried straight drag pipes on it.
Anyone had success wrapping the inserts with exhaust wrap like the stuff they sell for motor cycle inserts?
It sound amazing don't get me wrong just too loud! I got biker guys turning and giving ME dirty looks!
I actually think its louder than my bike was when I tried straight drag pipes on it.
Anyone had success wrapping the inserts with exhaust wrap like the stuff they sell for motor cycle inserts?
Had a 1976 L-82, 4-sp
Joined: Mar 2011
Posts: 5,338
Likes: 1,213
From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
When I had a Harley I purchased after market V&H pipes. The kit came with fibreglass to wrap on the outside of the baffles. I tried this and it did mellow the sound a bit i.e. reduced some of the "raspyness". Maybe the same results can be had wrapping those inserts with fibreglass insulation?
Thread Starter
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
When I had a Harley I purchased after market V&H pipes. The kit came with fibreglass to wrap on the outside of the baffles. I tried this and it did mellow the sound a bit i.e. reduced some of the "raspyness". Maybe the same results can be had wrapping those inserts with fibreglass insulation?
Thanks!
Thread Starter
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
Le Mans Master
Joined: Oct 2010
Posts: 6,938
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From: melbourne florida
2023 C3 of the Year Finalist - Modified
i have the 2 1/2 sweet thunder inserts, my suggestion is either move to florida , the old people are deaf 
and the bikers are more hard core.
or drill some maybe 1/2 in holes in the narrow part of the insert and then wrap it , the holes would allow the sound to pass through to the packing material. that would quiet it much more than wrapping it . you can also put a bolt across the outlet as an extra baffle, its an old harley drag pipe trick.
and the bikers are more hard core.or drill some maybe 1/2 in holes in the narrow part of the insert and then wrap it , the holes would allow the sound to pass through to the packing material. that would quiet it much more than wrapping it . you can also put a bolt across the outlet as an extra baffle, its an old harley drag pipe trick.
Thread Starter
Le Mans Master
Joined: May 2007
Posts: 5,028
Likes: 1,120
From: North tonawanda NY
I had to pick up my company car from the shop today and had my girlfriend drive the Bette while I followed... Its no where near as loud outside the car as it seems when your driving it... not as bad as I thought.
