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-   -   Muffler delete vibration and drone (http://www.the370z.com/intake-exhaust/121450-muffler-delete-vibration-drone.html)

omegagmt 05-05-2017 07:39 AM

Muffler delete vibration and drone
 
What can make it less have less cabin drone and vibration?

Could you wrap the pipes with heat wrap? Any suggestions?


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SouthArk370Z 05-05-2017 07:57 AM

Wrapping the pipes will get rid of some of the sound but you'll probably be disappointed by how little good it does. Your best bet is to install sound-deadening material (eg, GTMat) in the interior.

Curtis_J 05-05-2017 07:57 AM

Dynamat under the carpet in the hatch would help probably. As for the drone, adding a couple of resonators would help.

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RanRich 05-05-2017 08:03 AM

1. Sound deadening in the hatch - Dynamat
2. Have resonators welded into the new piping - Vibrant
3. Put your muffler back on

These cars drone because of a serious lack of sound deadening in the interest of weight savings, even with full brand-name exhaust systems. It's why you can hear the gear lash and every other little noise the transmission makes. If you don't want to put the muffler back on or buy resonators to add to the muffler delete pipes, pick up some Dynamat, remove the hatch interior plastics, and apply it to the chassis.

Nixin 05-05-2017 08:34 AM

RanRich said it...

"3. Put your muffler back on"

crazy4oldcars 05-05-2017 10:25 AM

Someone did a post a while back about adding pipe 90 degrees to the tail pipes to cancel the drone. He used science and everything.
As I remember it, he had a drone between 2k and 3k rpms, and calculated he needed to add a 19 inch long capped piece of pipe to each tailpipe to cancel it. The way it was described, it sounded like each different setup (brand, components used, etc.) would need to be calculated individually to get the full benefit. The calcs were based on the sound frequency of the drone.
It also sounded like you would need some fairly sophisticated equipment to measure the sound.

Kirk B.

SouthArk370Z 05-05-2017 11:07 AM

Quote:

Originally Posted by crazy4oldcars (Post 3649581)
... It also sounded like you would need some fairly sophisticated equipment to measure the sound.

An audio frequency meter is not expensive nor is it difficult to use. You can buy a stand-alone meter, download an app for your smart phone, or a musical instrument tuner might do the job (most are geared toward the "open" notes an instrument uses, so may not work).

omegagmt 05-05-2017 11:54 AM

Would the drone and vibration cause damaged down the road?


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RanRich 05-05-2017 02:56 PM

Quote:

Originally Posted by omegagmt (Post 3649613)
Would the drone and vibration cause damaged down the road?

Everything in your cabin will buzz in about 5-10K miles.

crazy4oldcars 05-06-2017 07:49 AM

I think you would get tired of the noise before the could be any damage done. It would take a very long time for that mild of a vibration to cause significant damage to anything but your nerves.

Kirk B.

omegagmt 05-08-2017 05:19 PM

Stuck the muffler back on. Feels so much better.


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Nixin 05-08-2017 07:36 PM

Quote:

Originally Posted by omegagmt (Post 3650539)
Stuck the muffler back on. Feels so much better.


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Go figure.:tup:

crazy4oldcars 05-08-2017 08:31 PM

Lol. That's the main reason I have kept my stock exhaust.

Kirk B.

SS_Firehawk 05-08-2017 09:03 PM

Shameless plug
You know... I have an AAM axleback for sale. Just sayin ;)
No drone, or vibrations. You can add to it as your budget allows it.

crazy4oldcars 05-08-2017 09:09 PM

Lol. Good shot.

Kirk B.

X2TheZ 05-09-2017 06:12 PM

Muffler delete vibration and drone
 
I took mine off while I'm waiting for my art pipes to come in (needed some noise in my life haha) and the housing for the trunk button managed to come loose from all the vibration!


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Rusty 05-09-2017 09:02 PM

Quote:

Originally Posted by omegagmt (Post 3649613)
Would the drone and vibration cause damaged down the road?


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Only to your ears later in life............................would someone please answer the phone................Oh wait, that's just the ringing in my ears. :shakes head: That's me now. :(

X2TheZ 05-09-2017 09:37 PM

Quote:

Originally Posted by Rusty (Post 3651179)
Only to your ears later in life............................would someone please answer the phone................Oh wait, that's just the ringing in my ears. :shakes head: That's me now. :(



To me it sounds really good for just a muffler delete and I don't seem to have that much drone... Maybe because I drive a Nismo? But I wouldn't think it would make a difference


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Raeshlavik 05-09-2017 09:44 PM

A month ago I put AAM resonated shorties on my Nismo and, yeah - it sounds awesome... And yeah - everything (I mean everything) in the car buzzes and rattles after that.

Even the headliner would buzz.

A week ago I moved from the house I had out on the fringes of Denver to a condo down town, and I put the Nismo exhaust back on... That 6am cold start would literally echo for blocks and I don't want to be a crap neighbor.

I'll admit that after a month of short tails it was nice going back to the stock Nismo can. The car feels 'new' again without all the rattling and buzzing... :)

X2TheZ 05-09-2017 09:53 PM

Quote:

Originally Posted by Raeshlavik (Post 3651195)
A month ago I put AAM resonated shorties on my Nismo and, yeah - it sounds awesome... And yeah - everything (I mean everything) in the car buzzes and rattles after that.

Even the headliner would buzz.

A week ago I moved from the house I had out on the fringes of Denver to a condo down town, and I put the Nismo exhaust back on... That 6am cold start would literally echo for blocks and I don't want to be a crap neighbor.

I'll admit that after a month of short tails it was nice going back to the stock Nismo can. The car feels 'new' again without all the rattling and buzzing... :)



As soon as my Art pipes get to my house I'm throwing the Nismo pipes back on. I might do a few pulls first though with them off


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2011 Nismo#91 05-11-2017 01:46 PM

Quote:

Originally Posted by Raeshlavik (Post 3651195)
A month ago I put AAM resonated shorties on my Nismo and, yeah - it sounds awesome... And yeah - everything (I mean everything) in the car buzzes and rattles after that.

Even the headliner would buzz.

A week ago I moved from the house I had out on the fringes of Denver to a condo down town, and I put the Nismo exhaust back on... That 6am cold start would literally echo for blocks and I don't want to be a crap neighbor.

I'll admit that after a month of short tails it was nice going back to the stock Nismo can. The car feels 'new' again without all the rattling and buzzing... :)

Non resonated test pipes, AAM 2.5 H-pipe, and non resonated short tails are fun on the track but painful for everything else.
https://youtu.be/IIJ8fSOT3BU
https://youtu.be/572bFMbXy04


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