Jump to content
SAU Community

Craziest Flutter Noise

R34NRG
 Share

Recommended Posts

  • Replies 51
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

GTR_VSpecII Explorer

GTR_VSpecII

Posted
Posted (edited)

There is no performance gain from leaving the bov off your car.

When you remove the bov the boosted air that would normally be discharged through the bov when the throttle body is shut, now has nowhere to go, so it bounces backwards and forwards between the throttle body and the turbo wheel, which we know as "flutter". This is the same as turning your kitchen tap on full then quickly turning it off, you get reverberation in the pipes.

In low pressure situations this "flutter" can slow down the turbo wheel, in extreme situations it can stop the wheel from spinning and even undo the exhaust wheel nut.

Jason.

Edited by GTR_VSpecII
Slide Grand Master

Slide

Posted
Posted
There is no performance gain from leaving the bov off your car.

When you remove the bov the boosted air that would normally be discharged through the bov when the throttle body is shut, now has nowhere to go, so it bounces backwards and forwards between the throttle body and the turbo wheel, which we know as "flutter". This is the same as turning your kitchen tap on full then quickly turning it off, you get reverberation in the pipes.

In low pressure situations this "flutter" can slow down the turbo wheel, in extreme situations it can stop the wheel from spinning and even undo the exhaust wheel nut.

Jason.

Exhaust wheels (Turbine wheels) do not have nuts.

They are fused to the shaft, And the compressor wheel is reverse thread.

Its more likely to sheer the shaft and snap it in half which i have seen ;)

RedLineGTR Enthusiast

RedLineGTR

Posted
Posted
butt it sounds soooo kooooooooool

**waites patiently for anti-ricers**

lol

A Mate did that on his r34 gt-t and 30min later a friendly police man was popping the bonnet thinking he had a aftermarket BOV.

dezz Grand Master

dezz

Posted
Posted
did it sound anything like the hks one?

lol...

maybe if you get an RB26, the same exhaust, the same turbo, the same everything...

as far as the actual flutter goes, it sounds the same as most fluttering....the rest of the noise is where its at....want that? get an R34 GTR and start spending

krzysiu Grand Master

krzysiu

Posted
Posted
did it sound anything like the hks one?

Ive taken off my bov once before to see what the fuss was all about. I did make my car sound like that only when the turbo chokes itself on 17 pounds of boost. The noise hurts because you can feel it eating your turbo lol. It does sound like shit on the stock turbo at stock boost.

Blitz Grand Master

Blitz

Posted
Posted
most flutters i hear pitch up....that hks one pitches down......i think it sounds mad.

but yeh.....if i ever get a 34 gtr(and i will!!!!!! some day)...ill give it a Go lol....

I hope to god you never own an R34 GTR.

R34NRG Grand Master

R34NRG

Posted
  • Author
Posted (edited)
Does anyone have the BOV cd? Or a cd with BOV sounds?

I don't even get a pssch, let alone flutter.

Consider yourselves lucky. I have once had a girl ask me where the "little pssch" sound was.

LOL.....damn man.......tough luck

I hope to god you never own an R34 GTR.

it seems like fewer and fewer ppl among these forums know less and less about sarcasm and jokes.......

now that i think about it i may not get a r34 gtr......dats if theres something else ill fancy in the furture.....other then taht the logical step up from a 34 gtt is the gtr :D

nehoo hey Blitz how long ago did u inspect the HKS r34 in japan?

Edited by anDru

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      At first I thought these were knock offs....

      By GTSBoy 路 Posted

      If you ask just me you'll get 3 different answers.
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy 路 Posted

      Do not ever trust ChatGPT with anything math related. They can't do math. They have no idea what it is. With enough data we can fit a decent equation in Excel, or if the available fits in Excel aren't good enough, a Matlab clone.
    • The Bogan
      Mistakes were made, my R34 Story

      By The Bogan 路 Posted

      You could check/calibrate that with a thermometer, we have long glass thermometers at work which go from -10 to +150掳c, they are pretty cheap too I believe,  as monkey fisted soldiers tend to break them, and getting new ones don't seem to send red flags to the people that hold the purse strings Edit: after a google they apparently cost about $80, but, digital ones seem to be much cheaper at around $40
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah 路 Posted

      I should have prefaced all of this with "I'd really like to not pull anything out of the car for this" 
    • The Bogan
      At first I thought these were knock offs....

      By The Bogan 路 Posted

      Me, I would happly spend some more coin on better tyres for my street car  Will they work, yes, of course, but why substitute some dry grip/braking distance, and wet weather grip/braking distance on what is really old tech to save some coin on your "precious" street car In the end it might not be you that farks up, it's the thousands of other idiots on the street that you need to worry about  For a street car that gets some "fun time", I have found that a quality tyre that can handle dry, wet, cold (Canberra gets pretty cold) and hot conditions, which may costs a little more, is great insurance  From my experience with them (driving around Goulburn in the winter) the RE003's are pretty poor in cold and/or wet conditions on the street If RS4's didn't hate gripping in the cold I would be running them always on the street,  great in the dry, OK in the wet, but, they do hate the cold, with a passion, I run PS5's year round now, basically, I've found the PS5 to be a great year round street tyre for all conditions, they last well, and are mid range pricing wise TL;DR. Tyre choice is probably like what brand and grade oil you should use, ask 10 people, and get 10 different answers... LOL
脳
脳
  • Create New...