turbo modification

[alan pritchard]

that was a considered option, although i didnt know what the differing back
pressures would do to the engine
----- Original Message -----
From: "mike" <mikemk40 at yahoo.com>
To: "alan pritchard" <alanthecelt at alanthecelt.screaming.net>;
<quattro at audifans.com>
Sent: Saturday, October 27, 2001 8:15 PM
Subject: Re: turbo modification


> Hmmmmmmmm indeed
>
> On the one hand drive to peterborough, hand over some
> money, bolt on bolt off solution as developed by those
> awfully clever Audi engineers.......on the other,
> custom make everything
>
> I know which route i would choose
>
> If you still want to go the metro route one idea might
> be to only feed three cyl exhaust flow through
> it....my 5 cyl car has the two big pipes/one little
> pipe exhaust, if yours is the same just join one of
> the big pipes and the little one and stick the turbo
> that. Gas flow is then 2214/5*3=1328, just about spot
> on
>
> Mike
>
> <alanthecelt at alanthecelt.screaming.net> wrote: > hmm,
> i have other ideas, im not a fan of
> > conventional approaches,  the turbo
> > was almost free, and in mint condition imho, so i
> > dont mind just to take it
> > apart,  ive requested the spec sheet from garrett,
> > after all id be more than
> > happy with 4 psi,  if its no good ill have to buy
> > another and run a twin
> > setup!!!  LOL
> > ----- Original Message -----
> > From: "mike" <mikemk40 at yahoo.com>
> > To: <quattro at audifans.com>
> > Sent: Saturday, October 27, 2001 6:41 PM
> > Subject: Re: turbo modification
> >
> >
> > > Alan...You can be sure that a turbo designed for
> > the
> > > gas flow from a 1275cc engine wouldn't last 5 mins
> > > with 2144cc worth blowing through it. In fact
> > given
> > > that you are pushing twice the flow through it i
> > be
> > > surprised if it lasted that long. Think
> > fragmentation
> > > grenade.
> > >
> > > Bite the bullet and drive to peterborough mate
> > >
> > > Kind regards
> > >
> > > Mike
> > >
> > > --- alan pritchard
> > > > <alanthecelt at alanthecelt.screaming.net> wrote: >
> > I
> > > > found a turbo in the scrapyard today, seems in
> > > > > good condition,  it has an integral wastegate
> > and
> > > > it
> > > > > is a garret.  it came off of a mg metro turbo
> > > > > (1275cc)  so im hoping it will be the basis
> > for my
> > > > > lightly blown coupe gt(t).
> > > > >
> > > > > I have a few questions though, obviously this
> > > > turbo
> > > > > assembly is designed to produce approx 5-7 psi
> > at
> > > > > peak revs ,  i guess 4500 ish from a 1275 cc
> > > > engine.
> > > > >  Obviously this turbo will spin up quicker as
> > my
> > > > > engine is 2144cc, and the wastgate will also
> > open
> > > > > earlier, so what effect will running the turbo
> > > > with
> > > > > the wastegate open from lower revs have?  will
> > it
> > > > be
> > > > > possible to run the turbo too fast and cause
> > > > damage?
> > > > >  also the cfm for the turbo will be much lower
> > > > than
> > > > > an equivalent factory fitted turbo, therefore
> > i
> > > > will
> > > > > have lower boost, but will this cause the
> > engine
> > > > to
> > > > > suffocate???
> > > > > hopefully with this amount of low boost i will
> > not
> > > > > require an intercooler, but will have to stop
> > the
> > > > > airbox from inflating/ leaking, fabricate a
> > > > manifold
> > > > > and downpipe adaptor, also do something with
> > the
> > > > > pipe that goes from the manifold to the
> > metering
> > > > > head,  but will my current fuel regulator
> > > > compensate
> > > > > for positive manifold pressure (ke engine , k
> > jet)
> > > > > or would i be best to make a pcb to drive the
> > 6th
> > > > > injector?
> > > > > whats everyones opinion on not doing it the
> > audi
> > > > > way?
> > > > >
> > > >
> > > >
> > >
> >
> ____________________________________________________________
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> > >
> > >
> >
> ____________________________________________________________
> > > Nokia Game is on again.
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> >
>
> ____________________________________________________________
> Nokia Game is on again.
> Go to http://uk.yahoo.com/nokiagame/ and join the new
> all media adventure before November 3rd.