Well, Im not an engineer; but I know it's true of the
Maserati. Perhaps it has something to do with exhaust
and intake pulses and how each turbo's boost is
determined by the exhaust pulses on its side and how
boost to the cylinders is affected by the intake
pulses. Maybe it allows for highest boost on one side
at a particular time when boost to the other side is
lower. I know in the old days with multiple carbs and
shared intakes, the intake pulses of each cylinder
could have adverse effects on the other cylinders and
intake design had to take this into account. And
exhaust pulses affected cylinder scavenging, so it
had to be taken into account. Remember the old Grand
Prix engines with the convoluted tuned exhaust
systems. Again, I don't know enough to give you a
definitive answer; but I do know that Maserati had
that problem and did fix it with some sort of balance
tube.
- James Rabin <rabin505@sasktel.net> wrote:
> This seems odd to me unless the banks for the engine
> have separate intakes. If there's a common intake
> for all 6 cylinders - it doesn't matter which side
> creates what boost - all 6 see the same thing.
>
> If they do separate intakes - then that makes sense
> - but common sense would tell me it's a bad idea.
> You'd need to have a balance tube to connect the two
> to avoid that issue.
>
> Volvo Turbo - I didn't see ANY rally car that was
> competitive that wasn't running C16 - pump gas at
> that level of racing just doesn't happen.
>
> 330 HP on 7 psi - the beauty of high compression
> boosted engines. Needs much better fuel management,
> but it's so much more elegant than low compression
> big boosted motors for having a nice power curve
> that's very drive-able. It has it's limits though -
> and truly big HP has to come from the low
> compression big boost combo. Too much turbo lag for
> my taste though. I think a 9:1 N9TE would be sweet
> with stock boost levels and a nice programmable ECU.
>
> TTY vs Studs - I think TTY is fine for stock. For
> performance (big boost, big HP) I'd go with studs.
> As for ARP - I've heard they're not so good. I'd
> love to do Raceware studs - but the only way I could
> afford them is if they can match them to an existing
> set. If they have to make them special - it's big
> $$$.
>
> I really want to try a stud conversion and copper or
> multi layer steel head gaskets. There's a company
> with a CNC water cutter that will pretty much do
> anything - price isn't bad - and it pretty much cuts
> through anything.
>
> Just my 2 cents though - take it for what it's
> worth.
> > Date: Wed, 17 Aug 2005 09:46:34 -0700 (PDT)
> From: gary freeman <riven2649@yahoo.com>
> Subject: Re: [Peugeot-L] 505 V6 (prv) Twin Turbo
> To: N9TE <fujitsu@turbo505.com>,
> peugeot-L@yahoogroups.com
>
You're exactly right! The original bi-turbos from
Maserati were notorious for breaking crankshafts
because of uneven boost.
- N9TE <Fujitsu@turbo505.com> wrote:
> The problem in turboing a V-configuration engine is
> getting equal amounts of
> boost to both banks of cylinders. It presents its
> own unique set of
> challenges. V8 guys who do superchargers have nice
> results because they can
> run low boost and get acceptable results.
>
> If done right it does work. But it's a nightmare
> when you're starting from
> scratch. The best source of information about
> turboing V6s comes from the
> Buick GN and Nissan 300z crowds.
>
> Hard enough to work on a regular PRV in a 505. Hate
> to see a turbo setup!
>
> ----- Original Message -----
> From: "Randy Porter" <droppedmi16@yahoo.com>
> To: "Peugeot - L - Yahoo Groups"
> <peugeot-L@yahoogroups.com>
> Sent: Tuesday, August 16, 2005 4:16 PM
> Subject: Re: [Peugeot-L] 505 V6 (prv) Twin Turbo
>
>
> > I don't know but that'd be
> SSSHHHAAAWEEEEEETTT!!!!!
> >
> >
> > --- august <august.macbeth@gmail.com> wrote:
> >
> > > There have been a few people over the years
> which
> > > have talked about
> > > building a twin turbo V6 out of the PRV motor.
> Has
> > > anyone had sucess
> > > with this idea, or heard of anyone who has? I'm
> > > cuerious :)
> > >
> > > /august
>
>
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Received on Wed Aug 17 12:22:43 2005
