Anyone tried turbo flutter for fun?

[moorejl57]

I was thinking of having my BOV vent to atmosphere through a squeezy toy whistle or maybe a whoopee cushion.

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[OFC Ranger]

I was thinking of having my BOV vent to atmosphere through a squeezy toy whistle or maybe a whoopee cushion.

Way ahead of you. I was going to cut a small piping hole in my hood and connect the piping to a powder hopper, which in turn will be fastened via another pipe over the BoV. Fill the hopper with baby powder so everytime I left off the gas...

 

[gfitzge2]

I was thinking of having my BOV vent to atmosphere through a squeezy toy whistle or maybe a whoopee cushion.

Now, you gotta do that. And we expected to see the vidio!

 

[OFC Ranger]

Now, you gotta do that. And we expected to see the vidio!

The chicken would be better....

 

[moorejl57]

The chicken would be better....

I was in Singapore for a business trip and a friend of mine gave me a chicken toy as a gag gift. I was in the elevator at the Shangri-La hotel on Orchard street and a Japanese business man in a $600 dollar suit bumped into me getting into the elevator and the chicken concealed in a grocery bag let loose with a loud squawk. He looked at me in utter disbelief and asked me if I made that noise. I took out the chicken and we both busted up laughing!

 

[Dave1899]

If my Ranger sounded like any of those sound clips I'd be having AAA tow it into the shop!!!

 

[OFC Ranger]

If my Ranger sounded like any of those sound clips I'd be having AAA tow it into the shop!!!

Yes that seems to be the general census of anyone who has "retired" listed as their occupation.

This thread would make one hell of a thesis back in my college days lol

 

[PoorSpecRanger]

Keep the BOV for when you're running so much boost the recirc valve can't handle it.

 

[9zero1790]

i enjoy the mighty mouse 2.3 engine as much as everyone else but, the last thing i want is to hear it. that WRX seems like its running low on astroglide. id be ashamed to ride in it or be seen near it. like the mustang mach e, dont care how fast it is - the contraption is just ugly...
i will not say how i think it sounds. however, to be fair and honest - any r5g member that does this flutter thing will instantly be shunned, and made fun of without mercy forever lol.
in a twisted way its almost like a jacobs brake. except the jake brake sounds less annoying. id just throw a guess it would not be good for the turbo on our engines.

 

[9zero1790]

Is this rice?

it sure sounds like it now lol. its a neat or fun thing to mess with but I wouldnt leave it that way. the bov seems like a better option. less wear on the turbo (at least the ones not designed to be back fed), faster pressure relief. aside from the sound being debatable i might be more open to the idea if it was helpful in a measurable performance way. maybe the pressure kept longer helps build boost faster when one is back on the gas. i have no idea if it does just thinking of ideas.

 

[mtsoxfan]

I'm not one for loud vehichles. The closest I had was a 73 Bronco, 302, 90 over with headers. And that wasn't loud, just sounded nice. Subjective I know...
I don't like motorcycles that rattle my windows as they drive by, never liked ricer sounds, and wanna be's are the worst.

I did have a neighbor who's sons had Subarus, really built, not faking sounds, and whatever they used gave the exhaust sound some deep tones. They would warm it up in winter, and it sounded like fine music. They never "opened" it up in neighborhood, and made sure their friends didn't either. One married a Subi girl, who's car was sponsered by Subaru, and was invited (expenses paid) to car shows in U.S. and Canada. One of the most beutiful cars I've seen.

Diesel whine, never found one loud enough not to like.

yeah, I'm older...

 

[9zero1790]

Way ahead of you. I was going to cut a small piping hole in my hood and connect the piping to a powder hopper, which in turn will be fastened via another pipe over the BoV. Fill the hopper with baby powder so everytime I left off the gas...

add an good led to it so the baby powder can light up a rainbow of colors at night!

 

[9zero1790]

I'm not one for loud vehichles. The closest I had was a 73 Bronco, 302, 90 over with headers. And that wasn't loud, just sounded nice. Subjective I know...
I don't like motorcycles that rattle my windows as they drive by, never liked ricer sounds, and wanna be's are the worst.

I did have a neighbor who's sons had Subarus, really built, not faking sounds, and whatever they used gave the exhaust sound some deep tones. They would warm it up in winter, and it sounded like fine music. They never "opened" it up in neighborhood, and made sure their friends didn't either.

Diesel whine, never found one loud enough not to like.

yeah, I'm older...

some diesels . i know this is ford place but the power strokes always sound silly to me.

 

[DukeCanBuildit]

Yes that seems to be the general census of anyone who has "retired" listed as their occupation.

This thread would make one hell of a thesis back in my college days lol

I can see the title of that paper now….

An In-Depth Analysis on Chromium and it’s Effects on the Retired or Soon to be Retired American Male

 

[FunInTheSun]

Turbocharged cars make two distinct iconic sounds.

Atmospheric Blow Off-Valve; this creates the iconic sound of a single sharp release of pressurized air.

Then we have the "flutter" or as the internet coins it, the "stustustustu" sound. Yea this made me laugh too, never heard it called that, I was like "The what sound?" It actually kind of makes sense I guess. You've heard it in movies and some of you may not have realized what it was, or mistook it for a BoV sound.

This is caused on a turbocharged system without any blow off valve type present. When the unused pressurized air has no exit point, well, it just goes back to whence it came from. Yup - reverse course all the way back out your intake. It is the sound of the returning air being forced back through your turbo and chopping against the blades.

So there are a couple of public thoughts on this;

1. Terrible for your turbo
2. Not terrible for your turbo
3. Minimally terrible for your turbo

Debate ranges from "air battling on your blades bad mmkay" (which does make sense), to "turbos built today are structurally superior to those of the past", to "wont hurt smaller turbos, but bad for big boy turbos".

I have zero clue what is true, not true, half truth, or any other choice on the spectrum.

We can make our turbos flutter by simply removing the BoV and blocking the pipe, or you can take a slice of coke can and slip it between the BoV and the pipe.

This is something I would never do. It is a symptom of an improperly engineered turbocharger installation. Unlike the atmospheric BOV bark/chuff/wheeze, It's a common "signature" sound in the ricer set that means they stuck a "bigger turbo" in their system, hoping for "big HP GAINZ", but failed to consider any of the huge list of variables that go into turbo selection and installation. Just "bigger is better" until something breaks. The Ranger BoV "barks" into the exhaust system, so it's almost unnoticeable. But "flutter" is almost always unintentional, and is not a good thing.

It's not only caused by the absence of a BOV, (which is a pretty dumb idea) it's usually unintentional, and caused by a turbo that is (A) too big for the engine displacement / cam profile, and/or (B) too big for the BOV. In a street car, it's just a "sick" sound effect that shows the system was put together by a n00b. It's so cringe, like retards removing the muffler, and then driving everywhere like they are in a parade because they can't touch the throttle without risking a noise ticket. Just screams N00B (to me, at least. Ricer boiz may have a different opinion).

As far as being dangerous, in a modern, fuel injected vehicle, it's mostly NBD because it's just air, and the only thing that happens is it decelerates your turbo violently, or maybe pops the airbox or rips a hole in the filter, but in carbureted engines*, the fuel is already mixed with the air, and although rare, an intake backfire "can" occur, and those are no joke... Usually damages something, even if it's only the filter.

Interestingly, intake tract reversion can be seen on engines with the air filter removed. It's more likely to be visible and engines with a short intake tract and an aggressive cam profile (like motorcycle engines, and performance cars built for high rpm power...). Pretty neat to watch, but a little scary to be close to once you realize what you are looking at. This is why some aggressive cams have a hard time idling smoothly. When the mixture makes a second trip through the carb, it gets a good bit richer, causing a stumble.

* Carbureted engines demonstrating intake tract reversion. The cloud is fuel/air vapor...



Boosted Lambo launches intake manifold through the rear window after intake backfire...

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