They say here you need a BOV all turbo cars have them only factory ones dont have a cone on the side and Dont make a sound.
Plus if you dont have one when you take the gas off they say the turbo can spin backwards.BANG. I know the girlies love them,young Dan says bigger the sssshhhhhhhhhss = more pusssy. I know with some turbo cars you can remove the wastegate but Not the BOV. Malcolm ----- Original Message ----- From: "Ben" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, July 29, 2003 11:00 AM Subject: Re: BOV Sounds > my SR has very very very little lag between gearchanges and it has no > BOV.....so i still cant see a reason to put one on.... > > ----- Original Message ----- > From: "Robert Charles Scealy" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Sunday, July 27, 2003 10:37 PM > Subject: RE: BOV Sounds > > > > I will buy the argument that BOVs, in particular ones that plumb back > > into the inlet, will help to decrease lag etc pretty easily. About the > > slowing down of the turbine though, I will need more convincing (a > > broken turbo would be very convincing!). I accept that it will cause > > some ammount of stress, but it is hard to think of a mechanical part in > > a car that isnt under stress, otherwise there would probably be little > > use for it being there. What about valves - they are pounding up and > > down 1000s of times a second, being belted open by a cam and smashing > > thier way back down on a seat, and they will often last the lifetime of > > a motor, and they have to deal with metal-metal contact, where turbos > > only have to deal with metal-air (except for bearings). > > Also, even when you are under full throttle the air passing through the > > intake of the turbo is always trying to slow it down, while the exhaust > > turbine is trying to spin it much faster. > > Like I said though, I could be completely wrong - and if someone does > > indeed have a broken turbo that they can _only_ attribute to the lack of > > a BOV I will certainly eat humble pie. Comes down to a basic distrust of > > advertising in the aftermarkets parts industry I guess. > > > > On Mon, 28 Jul 2003, Reeves Cameron wrote: > > > > > anything which tries to stop something turning at 10's of thousands of > rpm is going to stress on that piece of mechanics. it will also severely > hamper the performance of your turbo as more energy needs to be exerted to > spin the turbo back up to the speed at which is was operating before it was > asked to slow down... > > > > > > every late model turbo car that I can think of has a plumb-back bov. air > is directed from somewhere near the intake plenum back into the pipe from > the airbox to the turbo. > > > > > > vent to atmosphere bov's (which I think is the one you could be thinking > of), are the noisy ones. these are illegal. > > > > > > > > > > > > -----Original Message----- > > > From: Robert Charles Scealy [mailto:[EMAIL PROTECTED] > > > Sent: Monday, 28 July 2003 02:46 PM > > > To: [EMAIL PROTECTED] > > > Subject: RE: BOV Sounds > > > > > > > > > My old car used to do that with no BOV on closed throttle like you say. > > > I have always been a bit dubious of the theory that air rushing back > > > could damage a turbo though, has anyone ever had any damage that you > > > could attribute to the lack of a BOV? I am no expert though, so I will > > > quite happily hear arguments both ways. My main reasons for being a > > > little dubious are: > > > - If not having a BOV caused turbine damage, every factory car would > > > have a BOV to stop warrany claims etc, but many have no BOV with no > > > problem. > > > - The only place in writing that I have read about BOVs preventing > > > damage to a turbo is in advertisments for BOVs. > > > > > > On Mon, 28 Jul 2003, Reeves Cameron wrote: > > > > > > > with no bov you can probably achieve a similar sound. close the > intake/off the throttle and the air which would normally escape via the bov > rushes back through and hits the compressor wheel on your turbo... > > > > > > > > increases lag time and is a perfectly good way to break a good turbo > to boot... > > > > > > > > -----Original Message----- > > > > From: Geordie [mailto:[EMAIL PROTECTED] > > > > Sent: Monday, 28 July 2003 01:59 PM > > > > To: [EMAIL PROTECTED] > > > > Subject: RE: BOV Sounds > > > > Importance: High > > > > > > > > > > > > He's looking for the chirp sound. I'd say that's just some sort of > > > > whistle/trumpet type of BOV, prolly looking at a few hundred bucks to > get > > > > that dopey sound, but if that's what he wants then go for it. > > > > Far better off without a BOV, pain in the ass to set up, they leak, > etc.. > > > > > > > > > > > > -----Original Message----- > > > > From: [EMAIL PROTECTED] > > > > [mailto:[EMAIL PROTECTED] Behalf Of Ben > > > > Sent: Tuesday, 29 July 2003 5:42 AM > > > > To: [EMAIL PROTECTED] > > > > Subject: Re: BOV Sounds > > > > > > > > > > > > get rid of the BOV.....i dont have a BOV on my SR....she makes a CH CH > CH CH > > > > CH CH noise when u close the throttle > > > > > > > > ----- Original Message ----- > > > > From: <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Sunday, July 27, 2003 7:30 PM > > > > Subject: BOV Sounds > > > > > > > > > > > > > Hi List, > > > > > > > > > > Does anyone know what the relation is between BOV type and sound? > > > > > I have been asked how to get the 'pigeon' sound on a SR20 180sx. > > > > > I think he means the fluttery sound that is NOT wastegate flutter. > > > > > Supposedly you can get it by modifying the installation of a > Turbosmart I > > > > valve. > > > > > > > > > > Wierd question, I know, but hopefully someone will be able to help > out. > > > > > > > > > > Thanks, > > > > > Nick > > > > > > > > > > This message was sent through MyMail http://www.mymail.com.au > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ************************************************************************ > > > > The information in this e-mail together with any attachments is > > > > intended only for the person or entity to which it is addressed > > > > and may contain confidential and/or privileged material. > > > > Any form of review, disclosure, modification, distribution > > > > and/or publication of this e-mail message is prohibited. > > > > If you have received this message in error, you are asked to > > > > inform the sender as quickly as possible and delete this message > > > > and any copies of this message from your computer and/or your > > > > computer system network. > > > > > ************************************************************************ > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
