Dose Pipe

[Thunderbolt]

i know this is silly, but i took the vacume off the bov, so it wouldn't open, and i got teh flutter sound, but the car was soooo lagy and didn't want to boost past 5psi, the dam thing sucked. Is that what normally happens when you block on teh BOV.

mind you i have connected it back up, it was just being silly.???

My understanding on how a BOV works, is that the pressure helps holds the BOV shut. Hense, when there is no pressure working on the BOV at all, it is like you are introducing a big leak.

[drag-on silvia]

.............. is there any hope for these people.

can just see this scenerio

import car sales man: " i just need you to listen to this recording before you qualify to own a skyline".

tape recording can be heard........ vuuuuuuuuu tu tu tu tu tu

customer: "wow bru's da iz da shickest sound dis side of chapz ay....."

car sales man: "get out of my shop........"

[WogsRus]

ohh i see so if i just take of the hose to it, then the car will leak boost as the BOV has no way of being held shut, makes sence, learn something new everytime.

My question is, there are so many cars running arround with an BOV but still have flutter, can this be from an external gate, or the BOV being set to tight?

I have read many posts about the flutter, and was wondering, on the weekend was washing Jumbarie 16 and many of their drag cars had flutter, i presume that flutter was bad, but many people have that flutter sound.

[Mr Italy!]

ohh i see so if i just take of the hose to it, then the car will leak boost as the BOV has no way of being held shut, makes sence, learn something new everytime.

My question is, there are so many cars running arround with an BOV but still have flutter, can this be from an external gate, or the BOV being set to tight?

I have read many posts about the flutter, and was wondering, on the weekend was washing Jumbarie 16 and many of their drag cars had flutter, i presume that flutter was bad, but many people have that flutter sound.

Thats right, you need to pipe connected no matter what or you'll have a mad leak.

The way people block the stock BOV is putting a metal gasket between the return pipe and the BOV, that way the air gets trapped and has nowhere to go but back through the turbo (not good according to lots) and out the air filter.

[drag-on silvia]

ohh i see so if i just take of the hose to it, then the car will leak boost as the BOV has no way of being held shut, makes sence, learn something new everytime.

My question is, there are so many cars running arround with an BOV but still have flutter, can this be from an external gate, or the BOV being set to tight?

I have read many posts about the flutter, and was wondering, on the weekend was washing Jumbarie 16 and many of their drag cars had flutter, i presume that flutter was bad, but many people have that flutter sound.

can be certain that it wasnt the wastegate making that sound....

as for the cars at jambo making that noise..... big compressor + heavy spring on bov = some reversion

as for your normal run of the mill cars that still have a lil bit of reversion, as you said, bov is possible too tight

Edited January 9, 2007 by drag-on silvia

[Pauly33GTS-t]

dose /doʊs/ Pronunciation Key - Show Spelled Pronunciation[dohs] Pronunciation Key - Show IPA Pronunciation noun, verb, dosed, dos·ing.

–noun

1. a quantity of medicine prescribed to be taken at one time.

2. a substance, situation, or quantity of anything analogous to medicine, esp. of something disagreeable: Failing the exam was a hard dose to swallow.

3. an amount of sugar added in the production of champagne.

4. Physics.

a. Also called absorbed dose. the quantity of ionizing radiation absorbed by a unit mass of matter, esp. living tissue: measured in gray or rad.

b. exposure dose.

5. Slang. a case of gonorrhea or syphilis.

–verb (used with object)

6. to administer in or apportion for doses.

7. to give a dose of medicine to.

8. to add sugar to (champagne) during production.

–verb (used without object)

9. to take a dose of medicine.

[Origin: 1590–1600; earlier dos < LL dosis < Gk dósis a giving]

—Related forms

doser, noun.

pidgeon pipe, just gay.

This guy can relate to "Failing the exam was a hard dose to swallow"

and maybe hes got "the dose" haha refer to "5."

Edited January 9, 2007 by Pauly33GTS-t

[Gazee]

If you unplug the vacuum hose (and not plug up the hose) it wont really work because the standard bov's leak, they have a small hole in em underneath therefore introducing a vac leak so you'd really need to block it either with a plate in between the bov and the pipe its screwed onto or put something in between the hose connected to the bov and the return pipe going to the intake pipe. That works well with no leaks but if you don't have it tuned to compensate for the added fuel it throws in the car will start backfiring on ya cos of the AFM. Thats the only thing i don't like about AFM cars... its the shit you get when messing with vented/ blocked bov's.

[WogsRus]

thanks guys, much appriciated.

[rev210]

I reckon 5 mates packed in the back yelling and screaming and throwing half full cans of beer randomly at cars, bikes , pedestrians and small dogs is a far better way of drawing attention to yourself.

Although if you already have that option get a few off duty barmy army members (they don't have much work on right now) to sing a loud and catchy song about how your mates car goes 'dose' from the back seat of the car, even from inside the boot?

[lingeringsoul]

gees, I have absolutely no clue what wastegate flutter is supposed to sound like.....all I know is that people with external wastegate goes like.........vrrrooooooooommmmmm WAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!

so could someone clue me in as in what the flutter is supposed to sound like?.....all the flutters I've heard is from fully sik bro's and their blocked off bov

[discopotato03]

I think dozers should find something else to put into the compressor , that way their numbers would decline .

[paulr33]

mythbusters ahoy

#1 there is no such thing as wastegate flutter

#2 flutter or chop chop (vl style tutututututu) is air pressure collisions in the pipework, as a result of compressor surge, as a result of running no bov

#3 a wastegate making a "vrrrooooooooommmmmm WAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH" noise is a sreamer pipe setup, nothing to do with compressor surge, bovs, flutter etc.

#4 compressor surge occurs when pressure past the compressor wheel exceeds what the map dictates, so if you goes beyond that, the wheel surges violently

#5 when you block the bov, on gearchange the pressure collision causes the compressor wheel to surge, as we know #4 happens when pressure past the wheel goes beyond what the wheel can supply, so by blocking the bov, you induce compressor surge

[mega-power]

AFM in the cooler pipe is fine, it wont crack/break.

[WogsRus]

i didn't say that wastgates fluttered, i wanted to ask, if there is anyway a wastgate would make any funny noises as that flutter. That's all.

[sinistaGTR]

gees, I have absolutely no clue what wastegate flutter is supposed to sound like.....all I know is that people with external wastegate goes like.........vrrrooooooooommmmmm WAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!

so could someone clue me in as in what the flutter is supposed to sound like?.....all the flutters I've heard is from fully sik bro's and their blocked off bov

Yep gotta agree there, to scare ppl....hmm 38mm external gate with a 10" pipe comming off it.....

vrrrooooooooommmmmm WAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!! ppl running holding there ears....nothing like it

[gazza750]

me thinks the dose pipe should really be calledthe tosser pipe coz only a tosser would want it done to their skyline

[lingeringsoul]

mythbusters ahoy

#1 there is no such thing as wastegate flutter

oh good.....so I'm not missing out on anything hektik

[lingeringsoul]

Yep gotta agree there, to scare ppl....hmm 38mm external gate with a 10" pipe comming off it.....

vrrrooooooooommmmmm WAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!! ppl running holding there ears....nothing like it

to be honest I find it pretty gay........not as gay as vl with their tutus........not my cup of tea

[Wheezy]

Screamer = LOVE

[Gazee]

I reckon 5 mates packed in the back yelling and screaming and throwing half full cans of beer randomly at cars, bikes , pedestrians and small dogs is a far better way of drawing attention to yourself.

Although if you already have that option get a few off duty barmy army members (they don't have much work on right now) to sing a loud and catchy song about how your mates car goes 'dose' from the back seat of the car, even from inside the boot?

LOLL Its true its just for attention.... no better way to get noticed than dirving around with a tutututut noise comin from your car...