Stop the Drone - Helmholtz Style - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Roger Ramjet · 08-23-2010, 06:34 PM

If you don't like the 1800 to 2000 RPM drone, here is a method that stops it without buying a whole new exhaust system. IT WORKS!

Here are the calculations:
http://www.camaro5.com/forums/attach...1&d=1297738549

Iwantone2 · 08-23-2010, 06:39 PM

Looks like the V6 fix

orange-prince · 08-23-2010, 06:39 PM

what the hell is this !!!

brandotron · 08-23-2010, 06:39 PM

Wat.

Is the end of that U shaped pipe capped, or is it basically a "hidden" exhaust outlet?

Roger Ramjet · 08-23-2010, 06:48 PM

It is similar to the V6 fix but shorter. And, the pipe is capped.

omegaman · 08-23-2010, 07:21 PM

cool fix. A secondary resonator 'kill' tube. where the drone goes to die.

brandotron · 08-23-2010, 07:22 PM

2010 SSRS · 08-23-2010, 07:25 PM

cool

BigRed585Lbs · 08-23-2010, 07:47 PM

Congratulations, Roger, for thinking outside the box!

It worked before, and will work, again.

Hicompression · 08-23-2010, 07:49 PM

Quote:

Originally Posted by Roger Ramjet

If you don't like the 1800 to 2000 RPM drone, here is a method that stops it without buying a whole new exhaust system. IT WORKS!

Yeah it works! The GM Engineers designed the stock mufflers with a Helmholtz chamber! You just reinvented the stock 2010 Camaro V8 Muffler! See cutaway pic below.

mikey8 · 08-23-2010, 07:54 PM

I believe Solo uses these on some G8 applications.

Hicompression · 08-23-2010, 07:55 PM

Quote:

Originally Posted by mikey8

I believe Solo uses these on some G8 applications.

I believe GM does too.

brandotron · 08-23-2010, 07:58 PM

This is going to be the next big exhaust mod on this site.

Quote:

Originally Posted by Hicompression

Yeah it works! The GM Engineers designed the stock mufflers with a Helmholtz chamber! You just reinvented the stock 2010 Camaro V8 Muffler! See cutaway pic below.

That's the L99 muffler, right?

toehead93 · 08-23-2010, 08:07 PM

Quote:

Originally Posted by brandotron

This is going to be the next big exhaust mod on this site.
That's the L99 muffler, right?

You're kidding, right? Why waste the time, effort, and money when you can pick up stock L99 mufflers for next to nothing. IMO, the better, cheaper, and more efficient way is to simply add an $85 mufflered x-pipe to replace the H-pipe. It will help reduce drone when coupled with rear mufflers and you won't lose flow like you will with the u-bend.

Congrats to the OP on the craftsmanship, it looks like you did a good job.

08-23-2010, 06:34 PM	#1
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	Stop the Drone - Helmholtz Style If you don't like the 1800 to 2000 RPM drone, here is a method that stops it without buying a whole new exhaust system. IT WORKS! Here are the calculations: http://www.camaro5.com/forums/attach...1&d=1297738549 Attached Images __________________ History Camaro's: 83, 93, 95, 98, & 10. Last edited by Roger Ramjet; 12-12-2011 at 05:21 AM.

08-23-2010, 06:39 PM	#4
brandotron I am the internets. Drives: dangerously Join Date: May 2009 Location: Redondo Beach, CA Posts: 12,571 View My Garage	Wat. Is the end of that U shaped pipe capped, or is it basically a "hidden" exhaust outlet? __________________

08-23-2010, 06:48 PM	#5
Roger Ramjet Motor Head Drives: CTS-V Join Date: Feb 2009 Location: So MD Posts: 494	It is similar to the V6 fix but shorter. And, the pipe is capped. __________________ History Camaro's: 83, 93, 95, 98, & 10.

08-23-2010, 07:21 PM	#6
omegaman Drives: very poorly Join Date: May 2009 Location: Glendale, Arizona Posts: 550	cool fix. A secondary resonator 'kill' tube. where the drone goes to die. __________________ 2013 Camaro ZL1, Crystal Red, Auto, Exposed Carbon Fiber, Navigation.

08-23-2010, 07:22 PM	#7
brandotron I am the internets. Drives: dangerously Join Date: May 2009 Location: Redondo Beach, CA Posts: 12,571 View My Garage	__________________

08-23-2010, 06:39 PM	#2
Iwantone2 Voice Of The Voiceless Drives: CGM 1SS RS Join Date: Feb 2009 Location: OC Cali Posts: 9,610 View My Garage	Looks like the V6 fix

08-23-2010, 06:39 PM	#3
orange-prince QATAR 2022 Drives: black cts-V coupe a6 Join Date: Apr 2010 Location: doha-qatar ( middle east ) Posts: 983	what the hell is this !!!

08-23-2010, 07:25 PM	#8
2010 SSRS Drives: 3 V8 Camaros Join Date: May 2009 Location: The Ocean State Posts: 111,186 View My Garage	cool __________________ Jannetty Racing JRE Street Package

08-23-2010, 07:47 PM	#9
BigRed585Lbs Drives: Sierra and Tahoe Join Date: Jul 2010 Location: By Marion, MS Posts: 1,324 View My Garage	Congratulations, Roger, for thinking outside the box! It worked before, and will work, again.

08-23-2010, 07:54 PM	#11
mikey8 Drives: 2019 SS 1LE Join Date: Dec 2009 Location: Winter Garden, FL Posts: 548	I believe Solo uses these on some G8 applications. __________________

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