turbo modification

[alan pritchard]

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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