69427
The Artist formerly known as Turbo84
Boy, I'm not looking for more work or another project, but I've reached the point where I just can't stand the amount of noise the exhaust system radiates. The exhaust note and volume seems very modest when standing behind the car, but while sitting in the car it seems like the undercar pipes just radiate a lot of noise. As much as I dislike adding weight to my car, if that's what it takes to quiet the car down I'm open to contemplating it (At least any weight gain would be mostly low and centrally located on the car.).
The majority of the system is 3 and 4 inch aluminum tubing, but the noise was present before when the system was similarly sized and shaped in steel. I assumed softer aluminum would transfer less sound, but also that the lighter weight would vibrate/resonate easier. Perhaps they offset each other, ending up as noisy as the steel pipes. I don't know.
I don't have any rubber isolation in the mounts between the pipes and the frame. The tight clearances made it too damn difficult to easily add them at the time, so they got put way down on the priority list. That will be the first thing I change and try with this project.
Mass dampeners: It's weight, but another item (after the rubber mount change) I might try is clamping small weights at different locations on the pipes to reduce the amount of instantaneous vibration. Hit and miss is probably the only method I end up using.
Pipe wrap: Not a comfortable option for most of the system, as I don't like to let the aluminum tubing get any hotter than it currently gets.
That's the highlights. Any constructive input is appreciated. Thanks.
The majority of the system is 3 and 4 inch aluminum tubing, but the noise was present before when the system was similarly sized and shaped in steel. I assumed softer aluminum would transfer less sound, but also that the lighter weight would vibrate/resonate easier. Perhaps they offset each other, ending up as noisy as the steel pipes. I don't know.
I don't have any rubber isolation in the mounts between the pipes and the frame. The tight clearances made it too damn difficult to easily add them at the time, so they got put way down on the priority list. That will be the first thing I change and try with this project.
Mass dampeners: It's weight, but another item (after the rubber mount change) I might try is clamping small weights at different locations on the pipes to reduce the amount of instantaneous vibration. Hit and miss is probably the only method I end up using.
Pipe wrap: Not a comfortable option for most of the system, as I don't like to let the aluminum tubing get any hotter than it currently gets.
That's the highlights. Any constructive input is appreciated. Thanks.
I think I'll try them between the transmission crossmember and floor pan as well.
