Jump to content
SAU Community

Why Doesnt My Car Flutter ???

TiNTiN

By TiNTiN,
in Engines & Forced Induction

 Share

Recommended Posts

paulr33 Grand Master

paulr33

Posted
Posted

flutter doesnt come from the intercooler. flutter comes from the bov being too tight or not having one and the air goes back and hits the turbo blades and gets chopped. the intercooler will make it echo more but wont make the flutter noise by itself

West Grand Master

West

Posted
Posted
i just recently installed as 600x76x300 intercooler on ma car yesterday i took it out for a test spin everything goes fine but how come i dont get a flutter noise i hear wen other people put on intercoolers ?

Just block the black hose that run from your BOV back into the intake ( not the tiny vacum one ) then it'll give you heaps of flutter.

Cubes Grand Master

Cubes

Posted
Posted

Only flutter I've heard is on a VL that didn't have a BOV.

Wastegates are used to control boost on the exhaust side. And they don't flutter. If they are not redirected back in to the exhaust they are known as screamer pipes as that is what they do.. Scream!

Having no bov on a VL running no IC and std boost is fine. Once you begin to fit intercoolers and up the boost their is more air in the system which needs to be vented some where otherwise it will eventually cause damage from stalling the turbo when you lift off the throttle.

Jago Mentor

Jago

Posted
Posted

yea, i don't see why a wastegate would have anything to do with fluttering.

I think you need new tyres and maybe a new bodykit, neons too, that should do the trick (only kidding :) )

Aren't there some BOV's out there that actually do their job AND make a flutter noise (the release of air into atmosphere, not back pressure)?

nitemare5 Rising Star

nitemare5

Posted
Posted

Those are usually the adjustable type BOV's where the owner/workshop has tightened the BOV so that it will remain shut until higher boost is attained, therefore 'fluttering' at lower rev's and venting the air at higher revs.

PlasticStan Enthusiast

PlasticStan

Posted
Posted
just put a metal plate in the wastegate and take it 4 a drive and u will have flutter just open the two bolts and slide the metal in therefore blocking the air and making it return out the air filter

And the award for most insane post of the year goes too...... :)

If you block the wastegate your turbo will have no boost limit, and bye bye turbo.

:spcartman

Guest
This topic is now closed to further replies.
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • sinn3r
      R34 Skyline climate control unit transistor

      By sinn3r · Posted

      Hi all,   long time listener, first time caller   i was wondering if anyone can help me identify a transistor on the climate control unit board that decided to fry itself   I've circled it in the attached photo   any help would be appreciated
    • Kinkstaah
      Blue slip

      By Kinkstaah · Posted

      I mean, I got two VASS engineers to refuse to cert my own coilovers stating those very laws. Appendix B makes it pretty clear what it considers 'Variable Suspension' to be. In my lived experience they can't certify something that isn't actually in the list as something that requires certification. In the VASS engineering checklist they have to complete (LS3/NCOP11) and sign on there is nothing there. All the references inside NCOP11 state that if it's variable by the driver that height needs to maintain 100mm while the car is in motion. It states the car is lowered lowering blocks and other types of things are acceptable. Dialling out a shock is about as 'user adjustable' as changing any other suspension component lol. I wanted to have it signed off to dissuade HWP and RWC testers to state the suspension is legal to avoid having this discussion with them. The real problem is that Police and RWC/Pink/Blue slip people will say it needs engineering, and the engineers will state it doesn't need engineering. It is hugely irritating when aforementioned people get all "i know the rules mate feck off" when they don't, and the actual engineers are pleasant as all hell and do know the rules. Cars failing RWC for things that aren't listed in the RWC requirements is another thing here entirely!
    • GTSBoy
      Best place to order Authetic R32 Parts in Japan

      By GTSBoy · Posted

      I don't. I mean, mine's not a GTR, but it is a 32 with a lot of GTR stuff on it. But regardless, I typically buy from local suppliers. Getting stuff from Japan is seldom worth the pain. Buying from RHDJapan usually ends up in the final total of your basket being about double what you thought it would be, after all the bullshit fees and such are added on.
    • GTSBoy
      Ethanol Content Sensor - Always at 11%?

      By GTSBoy · Posted

      The hydrocarbon component of E10 can be shittier, and is in fact, shittier, than that used in normal 91RON fuel. That's because the octane boost provided by the ethanol allows them to use stuff that doesn't make the grade without the help. The 1c/L saving typically available on E10 is going to be massively overridden by the increased consumption caused by the ethanol and the crappier HC (ie the HCs will be less dense, meaning that there will definitely be less energy per unit volume than for more dense HCs). That is one of the reasons why P98 will return better fuel consumption than 91 does, even with the ignition timing completely fixed. There is more energy per unit volume because the HCs used in 98 are higher density than in the lawnmower fuel.
    • GTSBoy
      Blue slip

      By GTSBoy · Posted

      No, I'd suggest that that is the checklist for pneumatic/hydraulic adjustable systems. I would say, based on my years of reading and complying with Australian Standards and similar regulations, that the narrow interpretation of Clause 3.2 b would be the preferred/expected/intended one, by the author, and those using the standard. Wishful thinking need not apply.
×
×
  • Create New...