[Es2] MAF - turbo hose for tight clearance RS2 turbo in Coupe Quattro.

Ben Swann benswann at verizon.net
Tue Feb 24 07:58:36 PST 2009


I'm still trying to figure what is best way to do this.  If you have pictures of your
implementation of OEM hose and plumbing, I'd appreciate it.

So far the best hose fit I've found is the 10V 200 hose for K24 turbo - has no fittings,
but fits good.


-----Original Message-----
From: Matt twentyV [mailto:matt_20v at yahoo.com] 
Sent: Thursday, February 19, 2009 6:39 PM
To: quattro at audifans.com; es2 at audifans.com; Ben Swann
Subject: Re: [Es2] MAF - turbo hose for tight clearance RS2 turbo in Coupe Quattro.

Ben- first I know I still owe you some pictures I promised to take of my setup.  Maybe
tonight if I can remember!

One option might be an RS2 intake.  Dean Treadway's ES-2 has a crate RS-2 motor, and I
presume that included a stock intake.  It fits behind the the vertical mount, I've seen
it myself.  It has the same problem I do with the N75 mount but again, I've solved that


--- On Thu, 2/19/09, Ben Swann <benswann at verizon.net> wrote:

> From: Ben Swann <benswann at verizon.net>
> Subject: Re: [Es2] MAF - turbo hose for tight clearance RS2 turbo in Coupe Quattro.
> To: quattro at audifans.com, es2 at audifans.com
> Date: Thursday, February 19, 2009, 11:12 AM Followup - still 
> searching, but with more information.
> As expected, there is a VIN split with two different hoses for the 200 
> 10V with MC engine.  I expect versions of the MC-2 using K24 with 
> larger diameter can be made to work with a little stretch - RS-2 turbo 
> inlet is slightly bigger, but the hose should work.
> I'm wondering if anyone knows, can verify, compare hoses or plain out 
> knows.  What is the difference between the earlier MAF-turbo "J"
> hose for the MC vs. the later hose.
> Part numbers are :
> Earlier	034 145 747
> Later	034 145 747D
> Again, I'm looking for a hose that is shaped like this, and has a 2" 
> diameter on the turbo side.  Anyone know what the RS2 part number is?
> Ben
> > _____________________________________________ 
> > From: 	Ben Swann [mailto:benswann at verizon.net] 
> > Sent:	Thursday, February 19, 2009 10:31 AM
> > To:	quattro at audifans.com; es2 at audifans.com
> > Cc:	'Ben Swann'
> > Subject:	MAF - turbo hose for tight clearance RS2
> turbo in Coupe Quattro.
> > 
> > More ES2 conversion idiotsyncrosies..
> > 
> > I tried to fit a 3B MAF to turbo hose similar to the
> AAN hose - either would fit
> > except for the protrusions for fitting N75/frequency
> valve and Bypass valve, etc.
> > This application is for an RS2 turbo with 2"
> inlet  - basically same setup as RS2
> > engine.  The engine is installed in a '90 Coupe
> Quattro.  The core supprt vertical
> > with hood release mechanism is directly in front of
> the turbo with only about 2"
> > clearance.  So the fittings protrude and what is
> needed is a simple J-bend hose,
> > similar to what is on the earlier 200/5000 TQ's. 
> The stock 200/5000 hose is toos
> > small of diameter to fit the turbo.  
> > 
> > It is possible that the late 200 10V using k24 turbo
> might work, as the diameteron
> > some k24's  is larger, but don't have one to
> try.  I think the 1.8T hose is similar
> > and Neuspeed makes a nice on, but I think that it is
> too small a diameter as well,
> > although plenty of these to be found on eBay.  Maybe
> someone has one they can measure
> > and if 2" diameter it might work.
> > 
> > Basically I'm looking for a hose that will fit -
> perhaps there is a 200/5000 style
> > hose made to fit the 2" inlet of an RS2 turbo.  
> > 
> > Ben
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