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 > Diesel vs gas......................

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Hannibal

Tampa Bay Area

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Posted: 11/03/14 04:29pm Link  |  Quote  |  Print  |  Notify Moderator

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


2020 F250 STX CC SB 7.3L 10spd 3.55 4x4
2010 F250 XLT CC SB 5.4L 5spdTS 3.73
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transamz9

Lawrenceburg Ky

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Posted: 11/03/14 04:56pm Link  |  Quote  |  Print  |  Notify Moderator

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


2016 Ram 3500 Mega Cab Limited/2013 Ram 3500 SRW Cummins(sold)/2005 RAM 2500 Cummins/2011 Sandpiper 345 RET (sold) 2015 Sanibel 3601/2008 Nitro Z9 Mercury 250 PRO XS the best motor made.

Hannibal

Tampa Bay Area

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Posted: 11/03/14 05:14pm Link  |  Quote  |  Print  |  Notify Moderator

transamz9 wrote:

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


My truck's engine has never seen 5k rpm. Someone else keeps asserting that number. My lowly 5.4L runs 1900rpm on the flats, 2700rpm on interstate rolling hills or against any head wind and 4200rpm on the uphills. My Cummins engines saw 2600rpm (12v) and 2900rpm (24v) any time they needed it. My '98 12v 5spd/4.10 ran 2500 rpm in 5th gear 70mph towing or not all day long. Never hurt a thing. Just the same, there's far more to engine wear than rpm. Lower rpm loads the bottom end of the engine more. Higher rpm takes some of the load off using gear reduction to do the work. But perception seems to rule around here.[emoticon]

transamz9

Lawrenceburg Ky

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Posted: 11/03/14 05:57pm Link  |  Quote  |  Print  |  Notify Moderator

Hannibal wrote:

transamz9 wrote:

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


My truck's engine has never seen 5k rpm. Someone else keeps asserting that number. My lowly 5.4L runs 1900rpm on the flats, 2700rpm on interstate rolling hills or against any head wind and 4200rpm on the uphills. My Cummins engines saw 2600rpm (12v) and 2900rpm (24v) any time they needed it. My '98 12v 5spd/4.10 ran 2500 rpm in 5th gear 70mph towing or not all day long. Never hurt a thing. Just the same, there's far more to engine wear than rpm. Lower rpm loads the bottom end of the engine more. Higher rpm takes some of the load off using gear reduction to do the work. But perception seems to rule around here.[emoticon]


Show me one of these for a high revving gas motor........
Cummins High Mileage Club

The 5.4 is a tough motor but it will not compete with a diesel. I have a buddy with a F250 with the 5.4 and the last I talked to him it was at the 500,000 mark but all it does is haul groceries and small tag-a-long trailers.

carl2591

Garner NC

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Posted: 11/03/14 06:25pm Link  |  Quote  |  Print  |  Notify Moderator

transamz9 wrote:

Hannibal wrote:

transamz9 wrote:

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


My truck's engine has never seen 5k rpm. Someone else keeps asserting that number. My lowly 5.4L runs 1900rpm on the flats, 2700rpm on interstate rolling hills or against any head wind and 4200rpm on the uphills. My Cummins engines saw 2600rpm (12v) and 2900rpm (24v) any time they needed it. My '98 12v 5spd/4.10 ran 2500 rpm in 5th gear 70mph towing or not all day long. Never hurt a thing. Just the same, there's far more to engine wear than rpm. Lower rpm loads the bottom end of the engine more. Higher rpm takes some of the load off using gear reduction to do the work. But perception seems to rule around here.[emoticon]


Show me one of these for a high revving gas motor........
Cummins High Mileage Club

The 5.4 is a tough motor but it will not compete with a diesel. I have a buddy with a F250 with the 5.4 and the last I talked to him it was at the 500,000 mark but all it does is haul groceries and small tag-a-long trailers.



Think about it like this... A 5.4L gasser with 500,000 miles is the same as a 7.3L with 250,000 miles more or less. [emoticon]

there are some unit at the cummins high miles club with a lot of miles on them.. wonder if that is original engine.


Carl2591, Raleigh NC
2005 Airstream Classic 31D
2003 Ford F-250 SD, CC, 7.3L modded diesel machine
Every day is a new day with potential to be life changing.

Hannibal

Tampa Bay Area

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Posted: 11/04/14 04:59am Link  |  Quote  |  Print  |  Notify Moderator

transamz9 wrote:

Hannibal wrote:

transamz9 wrote:

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


My truck's engine has never seen 5k rpm. Someone else keeps asserting that number. My lowly 5.4L runs 1900rpm on the flats, 2700rpm on interstate rolling hills or against any head wind and 4200rpm on the uphills. My Cummins engines saw 2600rpm (12v) and 2900rpm (24v) any time they needed it. My '98 12v 5spd/4.10 ran 2500 rpm in 5th gear 70mph towing or not all day long. Never hurt a thing. Just the same, there's far more to engine wear than rpm. Lower rpm loads the bottom end of the engine more. Higher rpm takes some of the load off using gear reduction to do the work. But perception seems to rule around here.[emoticon]


Show me one of these for a high revving gas motor........
Cummins High Mileage Club

The 5.4 is a tough motor but it will not compete with a diesel. I have a buddy with a F250 with the 5.4 and the last I talked to him it was at the 500,000 mark but all it does is haul groceries and small tag-a-long trailers.


I've seen car size diesels with 250-350k that were losing compression and running a little weak. I'm not 100% convinced of the million mile club. Just the same, I don't believe rpm has anything to do with it. It's about how the engine was built for it's intended purpose. Your turbo spins 100~k rpm and should last the life of the engine.
Gas or diesel, I get the itch for a new truck at around 125k miles or four years anyhow.

spud1957

NB

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Posted: 11/04/14 06:57am Link  |  Quote  |  Print  |  Notify Moderator

If you have a DPF equipped diesel with 300K on it, you probably should have replaced the DPF twice, as their life span is around 100k. With current pricing to replace them, that would equate to $3-$4000.

With a properly maintained gasser, I don't think there are many regular maintenance items that cost that much. Just another item that needs to be considered for the long term of owning a diesel.


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carl2591

Garner NC

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Posted: 11/04/14 07:05am Link  |  Quote  |  Print  |  Notify Moderator

just saw this on yahoo.. the next big thing elec turbo chargers

https://autos.yahoo.com/news/electric-turbochargers-forecast-boom-gas-mileage-gains-150005366.html

this is be cool when it fully embraced.

transamz9

Lawrenceburg Ky

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Posted: 11/04/14 07:42am Link  |  Quote  |  Print  |  Notify Moderator

Hannibal wrote:

transamz9 wrote:

Hannibal wrote:

transamz9 wrote:

Hannibal wrote:

Funny how the diesel only crowd thinks 3k rpm isn't high rpm. It's a blur. Because a gas engine runs about 30% higher rpm doesn't make the diesel's rpm low. Compared to a 19,000 rpm Formula One race car engine, 5k rpm is nothing. The gas and diesel engines in our pickup trucks aren't that far apart.


I'm not a diesel only guy. I don't mind having a gas grocery get'er.

All of my toy cars have been gas.

My new Ram ('13) has never seen over 2500 RPMs towing my rig. That's half the RPM of your 5000 RPM runs. To me, that's half the wear.
While the gas motor is running 3000+ just to hold speed towing heavy mine is sitting at 15-1600. Again, half the wear.


My truck's engine has never seen 5k rpm. Someone else keeps asserting that number. My lowly 5.4L runs 1900rpm on the flats, 2700rpm on interstate rolling hills or against any head wind and 4200rpm on the uphills. My Cummins engines saw 2600rpm (12v) and 2900rpm (24v) any time they needed it. My '98 12v 5spd/4.10 ran 2500 rpm in 5th gear 70mph towing or not all day long. Never hurt a thing. Just the same, there's far more to engine wear than rpm. Lower rpm loads the bottom end of the engine more. Higher rpm takes some of the load off using gear reduction to do the work. But perception seems to rule around here.[emoticon]


Show me one of these for a high revving gas motor........
Cummins High Mileage Club

The 5.4 is a tough motor but it will not compete with a diesel. I have a buddy with a F250 with the 5.4 and the last I talked to him it was at the 500,000 mark but all it does is haul groceries and small tag-a-long trailers.


I've seen car size diesels with 250-350k that were losing compression and running a little weak. I'm not 100% convinced of the million mile club. Just the same, I don't believe rpm has anything to do with it. It's about how the engine was built for it's intended purpose. Your turbo spins 100~k rpm and should last the life of the engine.
Gas or diesel, I get the itch for a new truck at around 125k miles or four years anyhow.


That 500,000 mile 5.4 I referred to earlier. A set of heads around every 100,000 mile mark. Two plastic intakes. Three transmissions. Some might say that the motor is strong to last through all that and then you have people like me that think that a higher revving engine is harder on things , especially the transmission with all the extra shifting.

I have an '01 service truck with the 5.4 that weighs around 10,000# by itself and I do not allow it to tow any trailers anymore because of having to put transmissions in it. It has 4.10 gears and it will not hold OD on the interstate with nothing hooked to it. It has 150,000 miles on it.

The real point I'm trying to make is that people are comparing a gas motor to a diesel motor so they are trying to put them in the same class. So take a 3500 (DWR) with a gas and one with a diesel and load it to it's max and run them until they blow. See which one is still going. My money is on the diesel. I'm not saying that a diesel is for everyone but just the same a gas is not either. It's all in what you want. If you use a truck to go to the grocery or the occasional Lowes trip then a gas engine is just fine. If you are going to use a truck to it's max then diesel all the way.

If I go and look at a used gas truck and it has a goose neck ball in the bed I will move on to the next truck. If it's a diesel truck with a ball in the bed I will think nothing of it.

I agree that these new generation diesels are making it a little harder to constitute having a diesel but in the long run, if you are going to keep it and use it then yes in the long run a diesel is better IMO. FYI, I still love my 05 diesel way better than my 13 diesel.[emoticon]

Steakman

Calgary, Alberta

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Posted: 11/04/14 08:10am Link  |  Quote  |  Print  |  Notify Moderator

Your last line is exactly where my head is at as well. I would never consider trading in or otherwise getting rid of my 06 LBZ....best motor of the bunch for GM.

Besides...what's the price of a 2500HD these days.? 70+ thousand.? Ain't happening! Just painted mine this summer: $450.00 materials and about 40 hrs of my time...money/time we'll spent imo.

I'll be driving it for another 15 yrs yet! Both for groceries and towing my 5th.

Cheers,
Stk

* This post was edited 11/04/14 08:18am by Steakman *


M'self and the Bride...of 32 yrs
'06 GMC DMax CCSB 594,545 km (368,890 miles)
2003 Citation 26RKS.


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