Removing Intake Silencer......

[Marauderjack]

I went to Lowe's to get the 3" Fernco plug someone else posted would cover the hole left when the silencer thingy was removed!!:) I decided to use the 2" plug (QC-102) and make a PVC collar inside of it to keep it from collapsing when the hose clamp on the outside was tightened.;)

The 2" plug has a 2.8" outside diameter and fits snugly where the silencer hickey used to live!!:cool: :cool:

Photos below,
Marauderjack:cool:

[Marauderjack]

PVC collar inside...

[Marauderjack]

Installed in car.....:coolman:

[joflewbyu2]

can also cut the original silencer closed end off - about 1 inch - and reinstall.

[LincMercLover]

...and my tape's still holdin' strong... :D :up:

[SergntMac]

So...The peanut butter jar lid wasn't stylish enough for you, eh?

[Marauderjack]

What can I say Mac.....

When ya have a machine as nice as this one.....ya want it to be purty!!! ;)

I like the power...speed...responsiveness but when ya drive it hard ya get there too damn fast!!!:(

It's kinda fun to go slow and enjoy the smiles!!!:D

Marauderjack:cool:

[Agent M79]

So what sound does it make now that it is unsilenced?

[RF Overlord]

It doesn't really change the sound at all...maybe just a little bit at WOT...this isn't one of the more useful mods, it just gets rid of that stupid-looking "J" thingie...(which, if anyone cares, is actually a Helmholtz resonator... :rolleyes: )

[Agent M79]

Oooooh Helmholtz... So removing the silencer could be thought of as the "Helmholtz Maneuver"?

[Marauderjack]

"HELMHOLTZ REMOVER" :D

[Paul T. Casey]

Golly, that RF is as smart as George, some kinda hero!

[SergntMac]

Originally posted by Marauderjack
"HELMHOLTZ REMOVER" :D

So...Like...Ummm...When you supercharge, is it like ummm... a Heimholtz Removal, with extreme prejudice?

[Marauderjack]

YEP.....THAT'S IT!!!:cool:

[MapleLeafMerc]

Originally posted by Agent M79
Oooooh Helmholtz... So removing the silencer could be thought of as the "Helmholtz Maneuver"?

:lol:

bet you all haven't seen my Helmholtz condom, then... :beatnik:

[RCSignals]

Someday someone will just make that intake tube without the silencer hole.
I think someone did for the Firebird.

[greyghost]

Takes up to much room.

[woaface]

Maybe if taking it off when the car is stock, it helps it sound a little better at WOT. But what if it's supercharged or anything, would that bring it out more?

[darebren]

For those curious few: Here's a sample of Helmholtz's idea

First of all, we'll assume that the wavelength of the sound produced is much longer than the dimensions of the resonator. For a typical bottle, the sound produced has a wavelength of a few metres, so this approximation is pretty good, but it is worth checking whenever you start to describe something as a Helmholtz oscillator. The consequence of this approximation is that we can neglect pressure variations inside the volume of the container: the pressure oscillation will have the same phase everywhere inside the container.
Let the air in the neck have an effective length L and cross sectional area S. Its mass is then SL times the density of air r. (Some complications about the effective length are discussed at the end of this page.) If this 'plug' of air descends a small distance x into the bottle, it compresses the air in the container so that the air that previously occupied volume V now has volume V-Sx. Consequently, the pressure of that air rises from atmospheric pressure PA to a higher value PA+p.



Now you might think that the pressure increase would just be proportional to the volume decrease. That would be the case if the compression happened so slowly that the temperature did not change. In vibrations that give rise to sound, however, the changes are fast and so the temperature rises on compression, giving a larger change in pressure. Technically they are adiabatic, meaning that heat has no time to move, and the resulting equation involves a constant g, the ratio of specific heats. As a result, the pressure change p produced by a small volume change DV is just


Now the mass m is moved by the difference in pressure between the top and bottom of the neck, i.e. a nett force pS, so we write Newton's law for the acceleration awww screw it, and cut the thang off!!

[greyghost]

The surge volume on the Helmholtz (dd) is for an N/A motor only. Under a S/C force feed pressurized system its not needed as the engine is force fed. Like when the engine sucks to get its air N/A the intake can put up quite a howl. The only thing you hear with a blower motor is the whine of the blower gears as the pressue come up. I am not sure about the Vortex Blowers as they are different than a roots type blower.

[muslhed]

Originally posted by greyghost
Takes up to much room.

Wow! The shiny aluminum looking plug you have there looks good! What did you use?

[greyghost]

Uh, a piece of 6061 T6 aluminum, 3.5" dia. Just chucked it up in the ole lathe and machined it to 3.1 dia step down to 2.9 dia left the cap at about .190 thick. about .90 in thick overall. Coulda a been smaller and I might work it a bit more. Also hollowed it out so it didn't weigh a pound or more. :-)

[woaface]

Yeah, I'd say that's more about penguins than I ever wanted to know...but I kinda liked reading it:D.

I've also noticed that it's easier to pick out supercharged cars because of that whine they have. At least when you're in front of them...behind them and all you hear is muffler!

[hitchhiker]

can also cut the original silencer closed end off - about 1 inch - and reinstall.


Please explain to me what this thing is and how it is supposed to work.

Thanks,

David

[Cobra25]

Please explain to me what this thing is and how it is supposed to work.

Thanks,

David Thats a good question I'd like to know that too. Also what happeneds if on put's a sleve in hole after removing it and adds a extra high flow air filter?

[MERCMAN]

Thats a good question I'd like to know that too. Also what happeneds if on put's a sleve in hole after removing it and adds a extra high flow air filter?


Check this thread should be informative!!

http://www.mercurymarauder.net/forums/showthread.php?t=1074&highlight=Silencer