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Discussion Starter #1
Just bought my first Diesel last night. Question, and maybe this is stupid, but what RPM do you guys run yours at around town? I redline at 3500 and it doesnt seem to like driving over 2K as much. With that in mind, I am shifting at 2 and running it around 1200-1500 on the street...that puts me in 4th at about 30-35 mph <IMG SRC="smilies/eek.gif" border="0"> Am I just learning to drive this bad boy or should I run it higher? Thanks...and sorry if this sounds "Newbie" <IMG SRC="smilies/thefinger.gif" border="0">
 

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depends on the truck fords need a little more rpm than dodges. you will be short shifting compared to gas motor rigs. you will get the hang of it. in my 93 dodge 4x4 with 4.10s i would start in third and go to fifth in most of my driving when unloaded. all the torque is down low and it seemed easier that way. just dont try to rev the hell out of it. mike
 

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Yep, 2K and Newbie <IMG SRC="smilies/thefinger.gif" border="0">
 

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Discussion Starter #4
Its a Dodge. NV4500 tranny with 3.55's I been starting in 2nd and short shifting up form there so far.
 

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Mine's an auto, so I don't have to shift it.

But, it probably won't like 3500 very much.

Mine with 4.10 gears really likes 2200-2300
on the hiway. puts me at around 65-70mph.
much more than that and the mileage goes
away..
 

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Low RPM's is what diesel's like.
 

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Discussion Starter #7
Originally posted by JeepinIan USA:
<STRONG>Low RPM's is what diesel's like.</STRONG>
How low? Under a grand?


Oh yeah.....hey Rick....I got somethin for ya!
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<IMG SRC="smilies/thefinger.gif" border="0"> Dick! <IMG SRC="smilies/tongue.gif" border="0">

[ 10-03-2001: Message edited by: Keith Strong ]
 

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<IMG SRC="smilies/smokin.gif" border="0"> going up this weekend? under a grand is low, their range is about 1-2.5k

and <IMG SRC="smilies/thefinger.gif" border="0">
 

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Discussion Starter #9
Cant...gotta move me this weekend. <IMG SRC="smilies/frown.gif" border="0"> My rig is down too.
 

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Originally posted by Keith Strong:
<STRONG>Cant...gotta move me this weekend. <IMG SRC="smilies/frown.gif" border="0"> My rig is down too.</STRONG>
not for long. I'm working on it! Quit rubbing it in! <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">
 

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Discussion Starter #11
Originally posted by Loppy:
<STRONG>not for long. I'm working on it! Quit rubbing it in! <IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0"></STRONG>
:rub::rub::rub: <IMG SRC="smilies/thefinger.gif" border="0">
 

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I ran a fleet of F450's and they all seemed to like running around 2k. I've luged the eng down to 500 and still pulled off w/ ease. All that's w/ loaded service trucks.
 

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My powerstroke likes to live in the 1k-2k range. I tend to shift it low on normal driving and it pulls well. However, when I want to toast a little ricer, I run it up to the full 3200 or so and give him a facefull of diesel exhaust.

-John
 

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Discussion Starter #14
Cool, thanks guys. Any tips for maintenence? I feel like I am learning about cars all over again <IMG SRC="smilies/rolleyes.gif" border="0">
 

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Is it 12 valve or 24 valve?
My 24 valve seems happiest between 25 and 28.
Belive it or not I get better mileage between 28 and 3K
 

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How Much??? where Did you Buy Becuase Im' gonna Get One Real Soon !
Expedition Is Going BY BY!!!!!!


<IMG SRC="smilies/biggrin.gif" border="0"> <IMG SRC="smilies/biggrin.gif" border="0">

[ 10-03-2001: Message edited by: Adam Ant ]
 

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Discussion Starter #18
Got it in woodland...Truck was only $28k but I had to throw in a little more cause we were buried the mustang we traded in <IMG SRC="smilies/frown.gif" border="0"> I can hook all you guys up with the guy, he is a friend of mine, I work with his wife.
 

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Originally posted by Keith Strong:
<STRONG>Cool, thanks guys. Any tips for maintenence? I feel like I am learning about cars all over again <IMG SRC="smilies/rolleyes.gif" border="0"></STRONG>
I reccomend doing an oil analysis on every oil change. In the fleet I ran we changed oil every 3000 miles, and the fule filter at the same time. The oil sample was drawn, with hot oil, and sent to the lab. You would be surprised what goes on in the engine.

If you do oil samples, remember you are looking for trends. Generally one oil sample won't tell you very much unless the engine has some serious problems. I do not know how much they are in your area, the comany I work for charges the public $10 a sample, if you buy in quantity, the price gets less. Most independant oil labs like to get a sample of unused oil that you are putting in your engine so they have something to go by.

As for the coolant, be sure to use a diesel additive and keep it up to date. You can get some serious damage due to cavitation. cavitatiojn in diesels happens due to compression firing, you can't stop it from happening. When the fuel/air mix fires, the cylinder walls vibrate, causing air bubbles. The bubbles implode and the coolant hits the cylinder walls at supersonic speeds. This causes minute pits in a cooling system that does not have the proper additives. The additives in diesel coolant are self sacrficing. They form a layer in the system that protects the cylinders walls. When the bubbles implode, the coolant hits this layer and does not damage the outside ctlinder wall. This layer is constantly being renewed until the additive package is depleted.

Make sure you do not have any stray voltage going thru the coolant. Anything above .3 volts can kill the additive package in as little as 8 hours of use.

If you got any other questions, let me know.

PS, I was an ASE certified Master Heavy Truck Tech ( I let it lapse because I now do database design), and I have worked, and still do, for the Caterpillar dealer here for the last 7 years in the service department. I schedule the PM's for customer's, read the oil analysis reports, and let the customers know what is going on with thier machinery.
 

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Keith, check out http://dodgeram.org/ram.html
and http://turbodieselregister.com
both have a huge amount of info on the Cummins <IMG SRC="smilies/biggrin.gif" border="0"> I know what you mean about feeling like you're re-learning everything.. its a bit different alright.. but I doubt I'll ever go back to a gasser as a hauler.
 
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