OK good. The point I was trying to make was that in a single intake situatiuon (99% of all?), if one turbo bites the dust then BOTH turbos will see the result, not just the dead one. Eg. One pumping 10 one pumping 0 = half the flow. Thus both turbos will probably despool due to lack of gases. NOT: the dead turbo getting nothing but the good one still going nuts.
>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< On 7/27/02, 11:00:07 PM, "E Smith" <[EMAIL PROTECTED]> wrote regarding RE: Re[2]: please explainnnnnnnnnn.......: > If both turbo's are set at the same pressure (eg 10 psi) they will act > together and act as a bigger volume turbo. This means theywill produce a > greater flow but will not produce a higher pressure. Both turbo's will also > require twice the time to spool as they are dependent on the same quantity > of gas to energise them. > Cheers > Feral Errol > [EMAIL PROTECTED] > http://www.datrats.com.au/ > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Bob > Sent: Saturday, 27 July 2002 12:25 PM > To: [EMAIL PROTECTED] > Subject: Re[2]: please explainnnnnnnnnn....... > I think you would find that the pressure from the turbos is not going > to add together to give twice the boost. If this were the case, in the > piping leading from each of the turbos you would see 10psi, and in the > plenum you would see 20psi. Liquids/gasses always try to flow from > high pressure to low pressure points, so the air would then be trying > to flow back from the plenum to the turbos if that were the case. > As I understand it there are basically two types of twin turbo setups > used on cars, one where you have two smaller turbos of the same size > which should spool up identically etc and not have the syncronisation > problem, which allows you to use small turbos to get less lag without > as much restriction at the top end, and the second type like on late > model 13Bs where it has a small turbo to cover the bottom end, and a > big turbo for the top end. I read a report once where the engineers > were commenting on the setup of it, apparently its a real bitch to get > right. > Saturday, July 27, 2002, 12:00:19 PM, you wrote: > DA> Ummm, correct me if i'm wrong Mark, but the only time one turbo shitting > DA> itself would cause diff intake into those two cylinders would be if you > DA> were running two separate intake manifolds yes? If both turbos go to the > DA> one intercooler, then to a single throttle body, single plenum, and into > DA> all 4 you shouldn't have that problem. > DA> Oh and two turbos at 10 psi is 20 psi the engine would see. To get 10 > psi > DA> out of a twin setup you'd only need each to be at 5 psi. Is this > correct? > DA> Regards, > DA> Dave > >>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<< > DA> On 7/27/02, 10:42:22 AM, "Paul Stanley" <[EMAIL PROTECTED]> wrote > regarding > DA> Re: please explainnnnnnnnnn.......: > >> If syncronisation is a problem what about a custom turbo with seperate > >> turbines all connected to the one shaft? Is that possible? While you're > DA> at > >> it... you could go the whole hog and make it a quad turbo. > >> From: Paul Stanley > >> [EMAIL PROTECTED] > >> ----- Original Message ----- > >> From: Rick White <[EMAIL PROTECTED]> > >> To: <[EMAIL PROTECTED]> > >> Sent: Saturday, July 27, 2002 2:33 AM > >> Subject: Re: please explainnnnnnnnnn....... > >> > Mark. > >> > I could maybee se a problem with having one per two cylinders. > >> > if one decides to shit itself one half of the engine would get totally > >> different air fuel ratios and maybee the whole thing going bang big time. > >> > Like half of the engine would like kinda stall and the other half would > DA> be > >> fueled and boosted up big time so the half with the dead turbo would > >> probably lean out?? > >> > I recon one turbo is enough of a worry with out adding another to the > >> equasion. > >> > But two spooling up to ten psi would happen quicker with only half the > >> induction needed so you would be really getting like maybee 18maybee psi > DA> in > >> real terms? > >> > Just my thinking really. > >> > maybee I am way off track here. dunno. > >> > Later mate. > >> > Rick White. > >> > > >> > > >> > --- "mark krawczuk" <[EMAIL PROTECTED]> wrote: > >> > >hi, if you have a single turbo at 10 psi, feeding 4 cyls, would > it > >> go > >> > >better/or what would happen if you have two turbos at 10 psi, with > each > >> > >turbo feeding 2 cyls? > >> > > > >> > > i was fairly ,sorta on the track explaining to my bro, but then he > said > >> > >amongst other stuff, that he cant see any reason why two are better > than > >> > >one..... > >> > > > >> > > mark k > >> > > > >> > > >> > _____________________________________________________________ > >> > Get Your free Ozdat Email Account > >> > ---> http://www.ozdat.com > >> > > >> > _____________________________________________________________ > >> > Promote your group and strengthen ties to your members with > >> [EMAIL PROTECTED] by Everyone.net http://www.everyone.net/?btn=tag > >> > > >> > > -- > Best regards, > Bob mailto:[EMAIL PROTECTED] --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]/ ---------------------------------------------------------------------
