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

    • MBS206
      What should I do next to hold the head on

      By MBS206 · Posted

      When you pulled it off, there is no signs of blown head gasket? Is it possible you have some other issues going on? Possible cracked blocked? Or do you think it's straight up lifting the head? Did you check what the head was torqued to before pulling it down (To see if possibly they're stretching, or starting to break threads out etc)?
    • jez NF
      The Evolution Of "night Fury"

      By jez NF · Posted

    • Rezz
      Chris' Toyota Mark ii JZX110

      By Rezz · Posted

      Seems like a decent result for a modded JZX110. They are bulky in comparison to the 100 and 90 models (which I'd prefer myself) but they are getting very few and far between here in JP these days. Thanks for the detailed review and the import process into the UK. I also have a car which I'm hoping to export from Japan at some stage so it's good to know if someone from the UK was interested in it. By the way the corrosion underneath is par for the course for cars which were located in/near the mountains or along the Japan sea coastline. They get huge amounts of snow every winter and the sodium chloride is used on the roads. Many cars have some kind of rubber like treatment underneath but they tend to limit it to the wheel arches underbody and fuel tank. Suspension arms and sub-frames will have similar corrosion to your JZX110 which is a common sight. See it all the time and car dealers here generally don't even mention it unless asked.
    • Kinkstaah
      new 1.5 LSD issues/concerns

      By Kinkstaah · Posted

      If the sound goes away when you clutch in, the 1.5/2 way diffs are just shit, and you are a normal person. The diff is likely "fine" but driving at anything under 30kmh is a violent horrible experience. It would be exaggerated with solid diff bushings and subframe bushings if you have those.
    • jez NF
      The Evolution Of "night Fury"

      By jez NF · Posted

      Trailer got new mudguards to accommodate the new wheels Lightweight ally Painted, stickered and done ✅ 👌  
×
×
  • Create New...