See what I mean...what the "Textbooks" state, isn't always correct for the
real world.
Now what do the textbooks say...We have proof of the exact opposite.
----- Original Message -----
From: Jason&Sarah <Jpm699@email.msn.com>
To: <dakota-truck@buffnet.net>
Sent: Thursday, May 13, 1999 9:08 PM
Subject: Re: DML: Re: 180 thermo (hurts mileage)
> My mileage hasen't decreased!
>
> Jason
>
>
>
>
> >
> >One of the main reasons for taking the temps up to 200 in the first place
> >was due to Smog Control...good old EPA decided that a hotter running
engine
> >produced less emissions. True...but at a sacrifice on power. Now, most
of
> >the engines run at close to 200 without any problems...but run them a
> little
> >cooler (not too cold though) and you'll see slightly better performance.
> >
> >Have I see any degradations in mileage even on my Dak...nope. Any on my
> >co-workers 5.2L Dak with the 180...nope (his actually got better).
> >Remember, the 180 runs normally at 185-187...not 180...and the 190 runs
> >around 195-197 as well. (Conditions vary obviously.)
> >
> >I'm not that familiar with the principles you're talking about...I just
> know
> >what works from "real world" experiences.
> >
> >----- Original Message -----
> >From: <SuperNagz@aol.com>
> >To: <dakota-truck@buffnet.net>
> >Sent: Thursday, May 13, 1999 4:17 PM
> >Subject: Re: DML: Re: 180 thermo (hurts mileage)
> >
> >
> >> Well then maybe there were some other variables involved that somehow
> >managed
> >> to get you greater mileage.
> >>
> >> All I am saying that it is a thermodynamic principle that clearly
states
> >the
> >> lower the temperature, the lower the efficiency of the cycle... and of
> >> course, the opposite holds true... the higher the temps, the better the
> >> efficiency.
> >>
> >> Keep in mind, I am talking about the operating temperatures... and not
> the
> >> incoming air temperatures... we all know the cooler the incoming air,
> >the
> >> more dense it is... the more dense it is.. the more oxygen it
contains...
> >>
> >> This is not a flame in any way... all I am simply stating is that, "all
> >> things held constant... going from a 200 to a 180 degree t-stat will
> yield
> >> lower mpg"
> >>
> >
> >
>
>
>
>
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