turbo modification

[Larry C Leung]

As I believe the lister is from Europe (no MG Metro's stateside AFAIK),
the Merku XR4Ti is the European Ford Sierra XR4, BUT, I don't think that
they were turbo 4's there, I think they were 2.8 V6 Colognes. So, I don't
know what your source would be for the aforementioned Garrett T3 Turbo. 

LL - NY

On Sat, 27 Oct 2001 13:26:06 -0400 "Pat Dooley" <pdooley at gte.net> writes:
>IMO, the turbo is so small for your application that it will operate 
>way out
>of its efficiency range.  That will create very high outlet temps.  A 
>larger
>turbo at higher boost pressure would probably run cooler.
>I would recommend a T3 from a Thunderbird turbocoupe or Merkur Xr4ti.
>  -----Original Message-----
>  From: quattro-admin at audifans.com 
>[mailto:quattro-admin at audifans.com]On
>Behalf Of alan pritchard
>  Sent: Saturday, October 27, 2001 1:11 PM
>  To: quattro at audifans.com; Adam Queripel
>  Subject: turbo modification
>
>
>  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?