The only time i've ever destroyed a turbo was an oil cooled T2 on a exa, and I ha dno BOV and was boosting 14psi out of it. It snapped the turbine shaft.
The only other thing that could be broken easily is a ceramic exhaust wheel shearing off from the shaft. Having said that, I would still not bother with a BOV in most cases unless I was running either very large boost levels or I was running a ceramic ex wheeled turbo. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Robert Charles Scealy Sent: Monday, 28 July 2003 2:46 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]/ ---------------------------------------------------------------------
