Muffler delete vibration and drone

omegagmt · 05-05-2017, 07:39 AM

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

... 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

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

Stuck the muffler back on. Feels so much better.

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Go figure.

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.

05-05-2017, 07:39 AM	#1 (permalink)
omegagmt Base Member Join Date: Feb 2017 Location: TEXAS Posts: 13 Drives: 13 370z magnetic blk Rep Power: 9	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? Sent from my iPhone using Tapatalk Pro

05-05-2017, 07:57 AM	#2 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	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. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

05-05-2017, 08:03 AM	#4 (permalink)
RanRich Enthusiast Member Join Date: Mar 2015 Location: St. Louis Posts: 425 Drives: 09 PG Sport M6 Rep Power: 3373	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. __________________ AAM \| Dynosty \| Ecutek \| Eibach \| Hawk \| H&R \| Nismo \| Stillen \| Stoptech \| Z1

05-05-2017, 08:34 AM	#5 (permalink)
Nixin A True Z Fanatic Join Date: Sep 2015 Location: GWN Posts: 3,488 Drives: Goodbye Z! Rep Power: 19833	RanRich said it... "3. Put your muffler back on" Smashley and wanker like this.

05-05-2017, 10:25 AM	#6 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	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 likes this.

05-05-2017, 07:57 AM	#3 (permalink)
Curtis_J Base Member Join Date: Jul 2016 Location: St. John's, NL CANADA Posts: 153 Drives: '17 370z Base Rep Power: 23	Dynamat under the carpet in the hatch would help probably. As for the drone, adding a couple of resonators would help. Sent from my SM-G930W8 using Tapatalk

05-05-2017, 11:54 AM	#8 (permalink)
omegagmt Base Member Join Date: Feb 2017 Location: TEXAS Posts: 13 Drives: 13 370z magnetic blk Rep Power: 9	Would the drone and vibration cause damaged down the road? Sent from my iPhone using Tapatalk Pro

05-06-2017, 07:49 AM	#10 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	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.

05-08-2017, 05:19 PM	#11 (permalink)
omegagmt Base Member Join Date: Feb 2017 Location: TEXAS Posts: 13 Drives: 13 370z magnetic blk Rep Power: 9	Stuck the muffler back on. Feels so much better. Sent from my iPhone using Tapatalk Pro

05-08-2017, 08:31 PM	#13 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	Lol. That's the main reason I have kept my stock exhaust. Kirk B.

05-08-2017, 09:03 PM	#14 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	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. X2TheZ likes this. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

05-08-2017, 09:09 PM	#15 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	Lol. Good shot. Kirk B. SS_Firehawk likes this.

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