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

Wed Jan 19 15:36:32 EST 2005

850 Celsius AFTER the turbo... ouch
Isn't that a wee bit high ?
This is 1500+ F after the turbo, god only knows what it is doing before the 
turbo.
I currently peak at 1250 F before the turbo, and that is high enough.
I do not profess to know what is too much, so please lets have some one more 
knowledgeable chime in.

Mark
----- Original Message ----- 
From: "Robert Myers" <robert at s-cars.org>
To: <keith at maddock.com>; "Joe Pizzimenti" <joe.pizzimenti at gmail.com>
Cc: <s-car-list at audifans.com>
Sent: Wednesday, January 19, 2005 9:44 AM
Subject: Re: EGT guidelines? was Re: [s-cars] NAC? - Towing Capacity Figures

>
>
> It depends on exactly where the thermocouple is mounted.  Mine is right
> before the OXS in the top of the downpipe.  I try to not exceed 850 C.  I
> don't usually get even near that figure (more like 650-750) unless I'm
> REALLY on the loud pedal and then I'll see 830 to 840 or so every now and
> then.  Much above that and you risk burning valves, etc.  The EGT was one
> guide for adjusting fuel mixtures back during chip development activities.
>
> At 09:37 AM 1/19/2005 -0500, 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
>> > > >_______________________________________________
>> > > >S-CAR-List mailing list
>> > > >S-CAR-List at audifans.com
>> > > >http://www.audifans.com/mailman/listinfo/s-car-list
>> > > >
>> > > >
>> > > >
>> > > >--
>> > > >No virus found in this incoming message.
>> > > >Checked by AVG Anti-Virus.
>> > > >Version: 7.0.300 / Virus Database: 265.7.0 - Release Date: 1/17/2005
>> > >
>> > > Bob
>> > > Random Bushism: "She's just trying to make sure Anthony gets a good
>> meal -
>> > > Antonio." George W. Bush, on Laura Bush inviting Justice Antonin
>> Scalia to
>> > > dinner at the White House, Jan. 2001
>> > > _____
>> > > Robert Myers
>> > > Fayetteville
>> > > '95 urS6 - Cashmere Grey
>> > > _____
>> > >
>> > >
>> > > _______________________________________________
>> > > S-CAR-List mailing list
>> > > S-CAR-List at audifans.com
>> > > http://www.audifans.com/mailman/listinfo/s-car-list
>> > >
>> > >
>> > >
>> >
>> >
>>
>>
>>
>>--
>>No virus found in this incoming message.
>>Checked by AVG Anti-Virus.
>>Version: 7.0.300 / Virus Database: 265.7.0 - Release Date: 1/17/2005
>
> Bob
> Random Bushism: "Rarely is the question asked: Is our children learning?"
> George W Bush, Florence, S.C., Jan. 11, 2000
> _____
> Robert Myers
> Fayetteville
> '95 urS6 - Cashmere Grey
> _____
>

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