EGT guidlines? was Re: [s-cars] NAC? - Towing Capacity Figures

[Charlie Smith]

I can't speak to gas turbos specifically, but here's another data point.  

On my Dodge Cummins turbo diesel, I use 1200F as a don't exceed red line.
The EGT probe is centered in the exhaust manifold outlet, right upstream
from the turbo.  

The highest temperatures usually occur pulling a heavy load up a long
steep hill while trying to maintain Warp III speeds.

    - Charlie


  Charlie Smith  charlie {at} elektro.cmhnet.org  614-471-1418  
  http://www.elektro.com/~charlie          Columbus Ohio   USA
  http://www.elektro.com/~audi         photos & technical info

  95 S6 Quattro  -  24 PSI, RS2 6 speed, and other features  
  97 Dodge Ram   -  40 PSI, 4x4 w/Cummins turbo diesel




Earlier, Keith Maddock wrote:
> 
> Thanks Bob and Joe :)
> 
> Since I have an EGT in my car - I suppose it would help to know what
> range of EGT's is considered to be ideal, and what range of EGT's is
> considered to be bad.
> 
> Anyone have this info or a good link?
> 
> Thanks,
> Keith
> 
> 
> On Wed, 19 Jan 2005 07:48:02 -0500, Joe Pizzimenti
> <joe.pizzimenti at gmail.com> wrote:
> > There's probably nothing wrong with towing with a stock S6, but once
> > you start hogging it out and EGT's are already near the limit and
> > you're pumping 26-30psi into a motor and asking it to pull a lot,
> > something's gotta give.
> > 
> > My friend's F-350 mit Powerstroke turbodiesel has several programs
> > that he can plug in via the OBD-II port, the more radical ones
> > explicitly say not to attempt towing due to higher EGT's and risk of
> > hurting the motor.  I've noticed in my car that EGT's get higher even
> > with just some luggage and a set of wheels and tires, much less a
> > trailer.
> > 
> > Joe
> > 
> > 
> > On Wed, 19 Jan 2005 05:57:51 -0500, Robert Myers <robert at s-cars.org> wrote:
> > >
> > > IIRC, towing is mentioned in the owner's manual and is not forbidden.  Also
> > > IIRC, load limits are mentioned.  This leads me to believe that, within
> > > reason, there is nothing wrong with towing with an S6.  Perhaps the advice
> > > might be RTFM.
> > >
> > > At 12:02 AM 1/19/2005 -0500, Keith Maddock wrote:
> > >
> > > >Mark Pollan <mark.pollan at mci.com> wrote:
> > > > > Apologies in advance but the knowledge base of the members comprising this
> > > > > list is unparalleled in my world sooo..
> > > > >
> > > > > I am looking for a complimentary vehicle to my S6 (ahah, Audi content) and
> > > > > am looking at mid-size SUVs (4Runner, Pilot, Montero, etc) for hauling and
> > > > > towing (2500 lbs worth of Waverunners) capability.  The max payloads do not
> > > > > differ much but the towing capacity ranges from 2000 lbs (Montero) to 5000
> > > > > lbs (4Runner).  The horsepower/torque specs really do not differ that much
> > > > > across the power trains.  With all that said, how do manufacturers
> > > > determine
> > > > > towing capacity?  Is there an actual formula mandated by the feds or is
> > > > > there a significant degree of marketeering?
> > > >
> > > >Actually, what's wrong with towing with the S6?  Does anyone know what
> > > >the towing rating is on our cars.  I see the C5 S6 avant is rated up
> > > >to 4630 lbs in the UK.  The C4 S6 can't be too far behind.
> > > >
> > > >http://www.aa.co.nz/Section?Action=View&Section_id=257&Story_id=1565
> > > >Lists the C4 100 at 3087 lbs for  "5 cyl" and 3418 lbs for "V6" , I
> > > >would assume the turbo motor is capable of as much as the V6...
> > > >
> > > >Cheers,
> > > >Keith
> > > >_______________________________________________