Sport45
Not far enough from Houston, TX
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Joined: 09/24/2001
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jevanb wrote:
...if a gas eng is more powerful in a pickup size like you say, why are their no gas engines with 400/850??? and installed in a let say something everyone can purchase like a 3500 DRW
Probably because of market demand and gov't regs.
The 3.5 liter ecoboost makes 370hp and 430 lb-ft of torque. Scale that up to the size of the big three diesels and your're looking at about double those numbers.
We've recently seen 8.1 liter gas engines fit under pickup hoods. A 8.1 liter forced induction gas engine would be a monster. Probably pass anything but a gas station...
’19 F350 SRW CCLB PSD Fx4
'00 F250, CC SWB 4x2, V-10 3.73LS. (sold)
'83 F100 SWB 4x2, 302 AOD 3.55. (parked)
'05 GMC Envoy 4x2 4.2 3.73L.
'12 Edge 2.0 Ecoboost
'15 Cherokee Trailhawk
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parkersdad
North Carolina
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The gas motor still would not make its power as low as a diesel and it sure would not be as durable. My Cummins and I think all diesels in the big three are all iron blocks, heads, etc. There is no aluminum like there is in the gas motor.
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OhhWell
Florida
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http://www.allpar.com/mopar/hemi/hellcat.html
1998 bounder 36s V10 F53
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OhhWell
Florida
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parkersdad wrote:The gas motor still would not make its power as low as a diesel and it sure would not be as durable. My Cummins and I think all diesels in the big three are all iron blocks, heads, etc. There is no aluminum like there is in the gas motor.
I don't think anyone in the history of this massive thread has ever questioned the core durability advantage of those large diesel engines. Everything else attached to the block breaks just as easily though.
Your statement about the power produced by the diesel being lower than the gasser is correct. Units of Displacement being equal, the power output of the diesel engine is less. ![[emoticon]](http://www.coastresorts.com/sharedcontent/cfb/images/tongue.gif "tongue")
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parkersdad
North Carolina
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That is all about cars. I don't think that will hold up in a truck towing.
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Taco
VA
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Joined: 11/17/2002
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I have posted this engine before. It is a 9 liter turbo gas engine, it is a factory produced engine with a warranty and runs on 91 octane pump gas. It is made to run high loads for very long lengths of time.
For those that think gas engines don't make big torque down low try 1300 ft lbs at 2200 rpm where this dyno pull begins.
Engine
Now remember a 9 liter gas engine fits easily in a pickup.
Do you diesel guys still think a diesel has a power advantage anywhere in the power band?
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OhhWell
Florida
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Taco wrote:I have posted this engine before. It is a 9 liter turbo gas engine, it is a factory produced engine with a warranty and runs on 91 octane pump gas. It is made to run high loads for very long lengths of time.
For those that think gas engines don't make big torque down low try 1300 ft lbs at 2200 rpm where this dyno pull begins.
Engine
Now remember a 9 liter gas engine fits easily in a pickup.
Do you diesel guys still think a diesel has a power advantage anywhere in the power band?
Wow! That's one heck of an engine.
Someone will be along to say something brilliant like "That's a boat engine, no way that's gonna pull a heavy load over the hills I drive every day".
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OhhWell
Florida
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parkersdad wrote:
That is all about cars. I don't think that will hold up in a truck towing.
I doubt it would last as long as a huge diesel block but it would blow the doors off any of the current diesel offerings up any grade. Might need a massive gas tank though.
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OhhWell
Florida
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How about this one?
GM 502
pretty straight forward normally aspirated GAS engine with a very flat torque curve and 450hp.
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noteven
Turtle Island
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Joined: 02/13/2011
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Taco wrote:I have posted this engine before. It is a 9 liter turbo gas engine, it is a factory produced engine with a warranty and runs on 91 octane pump gas. It is made to run high loads for very long lengths of time.
For those that think gas engines don't make big torque down low try 1300 ft lbs at 2200 rpm where this dyno pull begins.
Engine
Now remember a 9 liter gas engine fits easily in a pickup.
Do you diesel guys still think a diesel has a power advantage anywhere in the power band?
I don't understand the question - but I throw out an answer - yes, a C16 Cat making 2050lbs ft has a power advantange at 1200 rpm... the MTU diesel in a Leopard 2 tank has a power advantage over this engine... neither one fit in a dually pickup truck...
- but anyway - this engine would be perfect for a pickup truck dually tow vehicle wouldn't it? Shouldn't need no 11 speed automatic either ...
What is it's hp/hr per lb of gasoline output compared to a diesel engine of the same power characteristics?
i.e. if the truck and big fiver take 100 hp to maintain 60mph cruise speed on a level road, what mpg will this engine return producing that power?
And the big question - does it "need" 91 octane? Wouldn't it run on regular? (just kidding... I am one of those dummies that runs 91 octane if the book says use 91 octane...)
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