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Author Topic: Best Diesel Truck Engine  (Read 8286 times)

Offline spoonman

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Re: Best Diesel Truck Engine
« Reply #50 on: April 05, 2017, 03:21:14 PM »
I have owned a 2002 7.3 powerstroke and now own a 2007 5.9 cummins. The 7.3 was a great power plant and was pretty reliable other than the cam pos sensor going out a couple times. I now have a 2007 mega cab 5.9 with 150k on it and have had zero issues so far. The power is a bit different in the 5.9 as it definitely feels to have more low end torque than the 7.3 but that's just my experience. I am getting great fuel economy out of my 5.9 and have found nothing to complain about at this point. I don't think you can go wrong with a 01 or 02 7.3 or a 06-07  5.9 cummins,  both very stout power plants.

Just a heads up on these comments. Mid-model year 2007 switched to the 6.7L Cummins with all the emissions crap on it. Those things were constant problems. By all means, if you find a good '07 Ram go for it, just make sure it's the 5.9L. It's kind of become a bit of a unicorn.

It is the 5.9, had it shipped here from Wyoming.

Offline RB

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Re: Best Diesel Truck Engine
« Reply #51 on: April 05, 2017, 04:06:17 PM »
Have never owned a Ford truck, but have owned a couple Ford cars and one SUV. With that said I have a 1999 Dodge diesel 5.9 24 valve with a five speed, I factory ordered it and it had 14 miles on it when I picked it up. It now has 260ish thousand miles on it. Other than oil changes, fuel, and tires the only major mechanical issues have been two lift pumps and one injector pump in 18 years. This buy far has been the best vehicle I have ever owned, but as stated earlier the little stuff is breaking, back window leaks off and on, one wing door handle does not work, etc. Actually getting ready to buy a new Dodge just waiting for the right deal and finish saving some cash for a down payment.
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Offline Jeremy Leaf

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Re: Best Diesel Truck Engine
« Reply #52 on: April 05, 2017, 09:40:16 PM »
I'd have to put another vote in for the Ford 1999 to 2003 7.3 models.  I've had one with a six spd shaker stick forever.   I pull a 23' walkaround all over the west coast year round.  It's been extremely dependable and gets great mileage.

Offline 2labs

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Re: Best Diesel Truck Engine
« Reply #53 on: April 05, 2017, 09:50:24 PM »
I'd have to put another vote in for the Ford 1999 to 2003 7.3 models.  I've had one with a six spd shaker stick forever.   I pull a 23' walkaround all over the west coast year round.  It's been extremely dependable and gets great mileage.


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Offline jmscon

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Re: Best Diesel Truck Engine
« Reply #54 on: April 05, 2017, 10:35:23 PM »
First diesel I had was a used '88 Ford naturally aspirated 7.3 snail. Second one was a used '97 7.3 power stroke. Both Fords were autos and the '97 had some slippage. The '97 also had a high altitude starting problem, I probably would have figured it out if I hadn't hit an elk on I-90 going 70. Both Fords were totaled.

Third I had an brand new '09 dodge 2500 diesel 6 spd, every 18 months had to take it in for a egr cooler grid cleanout (or something like that); had one of the u-joints on the front axle start to lock up, felt like I was in 4x when I was turning when I wasn't; last straw, the windshield started to leak. After three years traded it in for an '02 Dodge with a 5.9 that was a great truck for five years (also totaled). I'm now looking at getting a '05 Dodge. The 5.9 long beds with decent mileage are very hard to find!
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Offline KimWar1911

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Re: Best Diesel Truck Engine
« Reply #55 on: April 06, 2017, 12:11:16 AM »
First diesel I had was a used '88 Ford naturally aspirated 7.3 snail. Second one was a used '97 7.3 power stroke. Both Fords were autos and the '97 had some slippage. The '97 also had a high altitude starting problem, I probably would have figured it out if I hadn't hit an elk on I-90 going 70. Both Fords were totaled.

Third I had an brand new '09 dodge 2500 diesel 6 spd, every 18 months had to take it in for a egr cooler grid cleanout (or something like that); had one of the u-joints on the front axle start to lock up, felt like I was in 4x when I was turning when I wasn't; last straw, the windshield started to leak. After three years traded it in for an '02 Dodge with a 5.9 that was a great truck for five years (also totaled). I'm now looking at getting a '05 Dodge. The 5.9 long beds with decent mileage are very hard to find!
I love my 05. Has low miles at 125k. A bigger back seat would be nice like the newer ones have but then I'd have to have a 6.7.


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Offline Skyvalhunter

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Re: Best Diesel Truck Engine
« Reply #56 on: April 06, 2017, 05:27:07 AM »
Totaled that many trucks, hmm kind of hard on them aren't you?

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Re: Best Diesel Truck Engine
« Reply #57 on: April 06, 2017, 05:49:31 AM »
there was an 2006 duramax with 150k miles on here in the last 60 days if you go looking that would be a good choice to explore for $22k.  don't know if it is gone, but worth looking back through the thread.

edit.  took me a few minutest to find it, but this was the link I was referring to.  based on what you described, I think this would be a good option if it fits your budget.

http://hunting-washington.com/smf/index.php/topic,209930.0.html

Appreciate the "google fu" Whacker, I'll give that fella a call.  Good stuff folks, this is what I've been looking for, a simple what you liked and didn't like and why.  Appreciate all the help.

I looked at the ad for this truck when it first came out. If I was in the market for another truck with the LBZ. I would be giving this one serious consideration.

Offline dyhardhuntr

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Re: Best Diesel Truck Engine
« Reply #58 on: April 06, 2017, 10:21:55 AM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

Offline Skyvalhunter

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Re: Best Diesel Truck Engine
« Reply #59 on: April 06, 2017, 11:28:05 AM »
Some good info there!! Old truckers never die they just get a new Peterbuilt

Offline denali

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Re: Best Diesel Truck Engine
« Reply #60 on: April 06, 2017, 04:46:44 PM »
My 2005 Cummins just turned 300,000 miles.  my second transmission is starting to shift funny however  :rolleyes:
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Offline Mudman

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Re: Best Diesel Truck Engine
« Reply #61 on: April 06, 2017, 08:25:26 PM »
My 05 Ram is at 149k.  18mpg 12-14 towing.  20 on freeway at 65.  Turbo and tuner and gauges.  6" lift and 35"s.  Auto trans.  2m fuel filter.  No problems yet from the cummins.  Ball joints, pitman, shocks, brakes from the truck.  Really been a great truck.  My biggest complaint is I don't like how the Dodges steer-all of these years.  Ford drives smoother. 
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Offline 2labs

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Re: Best Diesel Truck Engine
« Reply #62 on: April 06, 2017, 08:56:57 PM »
My 05 Ram is at 149k.  18mpg 12-14 towing.  20 on freeway at 65.  Turbo and tuner and gauges.  6" lift and 35"s.  Auto trans.  2m fuel filter.  No problems yet from the cummins.  Ball joints, pitman, shocks, brakes from the truck.  Really been a great truck.  My biggest complaint is I don't like how the Dodges steer-all of these years.  Ford drives smoother.


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Offline Happy Gilmore

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Re: Best Diesel Truck Engine
« Reply #63 on: April 06, 2017, 10:33:22 PM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

What are the temperature parameters for a 03 duramax? My gauge beeps at 1,200. I try to run it up hills with 20psi boost and around 900-1000, 2,300rpm seems to be the sweet spot.
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Offline HntnFsh

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Re: Best Diesel Truck Engine
« Reply #64 on: April 07, 2017, 05:31:56 AM »
I think the Duramax will take 1300 for a very short period of time. But I wouldn't want it to hang there very long.

Offline baker5150

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Re: Best Diesel Truck Engine
« Reply #65 on: April 07, 2017, 07:15:49 AM »
My 05 Ram is at 149k.  18mpg 12-14 towing.  20 on freeway at 65.  Turbo and tuner and gauges.  6" lift and 35"s.  Auto trans.  2m fuel filter.  No problems yet from the cummins.  Ball joints, pitman, shocks, brakes from the truck.  Really been a great truck.  My biggest complaint is I don't like how the Dodges steer-all of these years.  Ford drives smoother.

Did you have a Shift kit Installed in your trans?

If not, it's worth the $.  Not only does it shift smoother and eliminates the shuttle shift, it allows fluid flow thru the trans cooler in park.
They are cheap, I'd also upgrade the servo and gov pressure solenoid, if not already done.

With all this done, these trans will last a lot longer than a stock re-build.

Offline baker5150

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Re: Best Diesel Truck Engine
« Reply #66 on: April 07, 2017, 07:28:47 AM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

What are the temperature parameters for a 03 duramax? My gauge beeps at 1,200. I try to run it up hills with 20psi boost and around 900-1000, 2,300rpm seems to be the sweet spot.

Best test for EGT limit is to load your truck heavy, usually done with a trailer or 5er, and haul up as steep a hill as you can find, drive it like you would a normal trip, or a little harder.  Make sure if you have a programmer to put it back to stock first.  Then watch your EGT's and see what the max it reaches is.  That should be your max, to be safe I would back it off a bit.
I set mine up to alarm at 1250 and then defuel the truck.  My test was closer to 1300.  I used to hit the alarm quiet a bit going over the pass', so I upgraded my exhaust and intake.  Now I rarely hit, usually right before a down shift, if ever.

Sorry for the thread jack.   :sry:

Offline jackelope

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Re: Best Diesel Truck Engine
« Reply #67 on: April 07, 2017, 07:48:38 AM »
My 2005 Cummins just turned 300,000 miles.  my second transmission is starting to shift funny however  :rolleyes:

You got a brake light out....
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Offline dyhardhuntr

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Re: Best Diesel Truck Engine
« Reply #68 on: April 07, 2017, 08:38:20 AM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

What are the temperature parameters for a 03 duramax? My gauge beeps at 1,200. I try to run it up hills with 20psi boost and around 900-1000, 2,300rpm seems to be the sweet spot.

Best test for EGT limit is to load your truck heavy, usually done with a trailer or 5er, and haul up as steep a hill as you can find, drive it like you would a normal trip, or a little harder.  Make sure if you have a programmer to put it back to stock first.  Then watch your EGT's and see what the max it reaches is.  That should be your max, to be safe I would back it off a bit.
I set mine up to alarm at 1250 and then defuel the truck.  My test was closer to 1300.  I used to hit the alarm quiet a bit going over the pass', so I upgraded my exhaust and intake.  Now I rarely hit, usually right before a down shift, if ever.

Sorry for the thread jack.   :sry:
Very good info. Obviously lower is going to be better. 1300 degrees is pushing the limit. I wouldn't run it for an extended period of time. If you get to that point you need to let off the fuel and or downshift to get your rpms up. Or you can run bigger exhaust. You can have all the fancy high horsepower stuff on an engine but if you can't get rid of the heat it's all useless.

Offline dyhardhuntr

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Re: Best Diesel Truck Engine
« Reply #69 on: April 07, 2017, 08:39:27 AM »
Some good info there!! Old truckers never die they just get a new Peterbuilt
Peterbilt for life! Lol

Offline whacker1

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Re: Best Diesel Truck Engine
« Reply #70 on: April 07, 2017, 09:00:27 AM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

What are the temperature parameters for a 03 duramax? My gauge beeps at 1,200. I try to run it up hills with 20psi boost and around 900-1000, 2,300rpm seems to be the sweet spot.

Best test for EGT limit is to load your truck heavy, usually done with a trailer or 5er, and haul up as steep a hill as you can find, drive it like you would a normal trip, or a little harder.  Make sure if you have a programmer to put it back to stock first.  Then watch your EGT's and see what the max it reaches is.  That should be your max, to be safe I would back it off a bit.
I set mine up to alarm at 1250 and then defuel the truck.  My test was closer to 1300.  I used to hit the alarm quiet a bit going over the pass', so I upgraded my exhaust and intake.  Now I rarely hit, usually right before a down shift, if ever.

Sorry for the thread jack.   :sry:
Very good info. Obviously lower is going to be better. 1300 degrees is pushing the limit. I wouldn't run it for an extended period of time. If you get to that point you need to let off the fuel and or downshift to get your rpms up. Or you can run bigger exhaust. You can have all the fancy high horsepower stuff on an engine but if you can't get rid of the heat it's all useless.

Out of curiousity, how much can you really lower temps with a Cat back exhaust change?  Obviously with Turbo back and emissions delete this would have a much greater effect, but I thought it was worth the question.  I am about to purchase a newer 6.7 F350 and was curious what I can really do without screwing up the warranty.

Offline denali

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Re: Best Diesel Truck Engine
« Reply #71 on: April 07, 2017, 09:24:34 AM »
My 2005 Cummins just turned 300,000 miles.  my second transmission is starting to shift funny however  :rolleyes:

You got a brake light out....
:)

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Offline Happy Gilmore

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Re: Best Diesel Truck Engine
« Reply #72 on: April 07, 2017, 10:16:41 AM »
I always slow down when hauling. Hit 64mph and get out of OD. It pulls anything at that speed. Or, alternately, get up to 82 mph. I have 3.5" straight through. It's a noisey baskird.
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Offline whacker1

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Re: Best Diesel Truck Engine
« Reply #73 on: April 07, 2017, 11:34:28 AM »
I've been a diesel mechanic for close to 17 years now. For 10 years I worked at a peterbilt dealer as the lead engine guy and for the last 7 years I've worked for the local municipality fleet. All of the engines mentioned have their issues and nuances. The biggest issues with diesels is from a maintenance stand point. A lot of people think that just because it's a diesel it will last longer. That's true if you maintain it. Diesels are quite a bit more $ to maintain over the life of them. If you're hauling regularly then it's a great way to go. Most of the diesels nowadays are great motors. Nothing has really changed much other then the emissions. Even the 6.0 ford is a great motor( it just needs a little money to make it that way). Also idling a new motor kills the emission system. Don't idle it for hours. Just drive it normally and you should be fine. New truck are a little more maintenance but if you pick up an older truck you're also going to pay for it. A buddy of mine picked up a nice Durand with low miles and 10 years old and payed 30k for it. So keep an eye out for good deals. If I was you and it's just an opinion, I would look at dodge or chevy. Dodge has a great base platform and it's proven. It's a straight six and those motors have a longer torque curve( no opposing cylinders). The only thing about dodge I dislike coming from a tech standpoint is dodge only allows you to see certain parameters for diagnoses. If you like to do your own work this can be a downfall. Duramax is a great motor(2004.5-early 07 before dpf). One thing you should look into is puttin a pyrometers guage to watch your exhaust temps when pulling. That will cook any motor no matter how great it is. It's a tough decision but those 2 engines are probably going to be cheaper maintenance in the long run. If you have any questions feel free to pm me.

What are the temperature parameters for a 03 duramax? My gauge beeps at 1,200. I try to run it up hills with 20psi boost and around 900-1000, 2,300rpm seems to be the sweet spot.

Best test for EGT limit is to load your truck heavy, usually done with a trailer or 5er, and haul up as steep a hill as you can find, drive it like you would a normal trip, or a little harder.  Make sure if you have a programmer to put it back to stock first.  Then watch your EGT's and see what the max it reaches is.  That should be your max, to be safe I would back it off a bit.
I set mine up to alarm at 1250 and then defuel the truck.  My test was closer to 1300.  I used to hit the alarm quiet a bit going over the pass', so I upgraded my exhaust and intake.  Now I rarely hit, usually right before a down shift, if ever.

Sorry for the thread jack.   :sry:

Cat back exhaust?  what size pipe? and how much do you think you lowered EGT in normal use under load?  100 degrees?   more?  and what intake?

Offline jackelope

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Re: Best Diesel Truck Engine
« Reply #74 on: April 07, 2017, 12:41:55 PM »
My 2005 Cummins just turned 300,000 miles.  my second transmission is starting to shift funny however  :rolleyes:

You got a brake light out....
:)

As soon as I posted I figured someone would call me out, I'm on it  :)

I'm pretty sure I see every burned out light bulb on the road.
:chuckle:
:fire.:

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