[AT] Tractor Diesel Engine question - non-antique

[Louis]

I will agree on the dyno testing throughout the day.  We used to have a
John Deere 4440, the I tractor pulled with.  When I pulled in classes
with a horsepower limit, I would have the tractor dynoed at the track,
usually in the heat of the day.  I would set it about 7 hp below the
limit, because as the air cooled in the evening and maybe more moisture
in the air, it would help add horsepower.

You can turn up an engine and not hurt it if you are smart.  If you try
to bump it up a few gears, while working, you are going to have
problems.  If you are needing the tractor to work with, it is best to
leave it alone.  If you need more horsepower, buy a bigger tractor.
Yes, the same basic block might be used in a variety of tractors, but
the thing you are forgetting about is the drivetrain.  The drivetrain is
built to go with the horsepower.

Lou

-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of
cchopper at centurytel.net
Sent: Sunday, February 21, 2010 2:18 PM
To: Antique tractor email discussion group
Subject: Re: [AT] Tractor Diesel Engine question - non-antique


Grant,

We all know what has been done in the past as far as turning up the 
fuel.  A good operator with common sense could turn up the fuel and not 
have any problems and then there is the other side of the coin. 

One of the main concerns on newer EPA certified engines is the 
emissions.  If you get your engine/fuel delivery set up, don't go the 
the coffee shop and brag on it.  You never know where an EPA snitch is 
awaiting, it could be costly. 

As far as Hp goes and dynos and 
results.............................Last week and this coming week I'm 
doing some dealer training in the Orlando area.  I dyno test 2 tractors 
8 times a day.  It is amazing the test difference between 8:00 am 
morning, 35-40 degree F., and the 4 p.m test when the ambient temp is 
in the 70's. 

I realize I did not answer any questions but thought I would toss out 
some sideline info. 

Ernie-Samson tractor collector


> ----- Original Message -----
> From: "Grant Brians" <sales at heirloom-organic.com>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Saturday, February 20, 2010 6:43 PM
> Subject: [AT] Tractor Diesel Engine question - non-antique
>
>
> >I am hoping someone on the list (perhaps Mike Sloane?) can help me on

> >understanding something on recent design Diesel engines. Every 
> >tractor and  truck manufacturer of any size now has multiple versions

> >of their diesel  engines with different Horsepower ratings and Torque

> >rating curves.  Clearly  they are varying settings in the controls of

> >the fuel systems and some  versions might have a turbocharger or 
> >intercooling. What I am trying to  figure out is when there is an 
> >engine that is NOT electronically  controlled
> > (there are still some), what SAFE changes could an owner make to
settings
> > to
> > take advantage of the inherent capabilities of these units. 
> >     In particular, I have Perkins and New Holland engines that fit
into
> > these categories. In one case the nominal rating of the tractor is
78HP
> > PTO,
> > but my unit was dyno tested when I bought it with 93HP from the
factory
> > and
> > others have "adjusted" these engines to get over 100HP PTO. I am
also
> > looking at possible acquisition of another tactor that has tractors
in the
> > same "family" using the same engine but with different adjustments
that
> > are
> > as much as 45% higher horsepower. These variants of the engine are
all
> > Tubocharged and Intercooled, so can a skilled and knowledgeable
diesel
> > mechanic change the settings?
> >     Inquisitive people would like to know! I am not saying that I
would
> > make any of these changes, but I know that in the past when I have
> > converted
> > OLD engines to better components that their performance has
materially
> > improved, sometimes yielding 25% more work.... Also, at times the
fuel
> > economy has gone up, but I know that would not happen in these newer
> > engines. I do know this would void the no longer applicable
warrantee on
> > these engines if one were to perform the changes, but I still have a
> > burning
> > curiousity. 
> >           Grant Brians

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