turbo modification

[mike]

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.
> > Go to http://uk.yahoo.com/nokiagame/ and join the
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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.