Cummins Engine Ad

[jelag]

In the latest issue of "Light and Medium Truck" Cummins goes on record as the first engine builder to produce an engine to meet the 2010 standards... This engine is the 6. 7 L for the Dodge trucks.....

In addition on page 11 of the same issue is an ad for medium duty 6. 7 L ISB engine offered new in 2007..... They show it with 325 hp and up to 750 lb-ft of peak torque..... Highest hp to weight ratio in its class..... and lowest cost of ownership.....

So in some applications they have the ability to run this engine up to 325 hp...

Page 27 of the same issue has a full page ad from Dodge showing the new 4500 and 5500 Heavy Duty Chassis Cabs... ...

Nothing new in the ad from what Steve wrote from the auto show... .

 

[THanley]

Check out the marine ratings on the old 5. 9L engine, 473HP and 938 lb-ft of torque.

 

[gsbrockman]

Check out the marine ratings on the old 5. 9L engine, 473HP and 938 lb-ft of torque.

Nice ! :-laf

 

[JasonCzerak]

hmm wonder if they have different valve spring in the marine motors? cuz they run them to 3400rpm to make that 473hp. does that mean we are good to 3400rpm with out worrie of valve issues?

 

[MCummings]

That 470hp marine engine spec sheet is fo a HPCR, and it shows a max EGT of 1333. 4, with almost 1k of torque around 2k RPM.



It also shows that full power was not to be used more than one hour out of every eight hours, and was for leisure use, where the engine was not going to be used more than 500hrs a yr.



IT also said that peak power had to be made 200rpm less than full operating RPM.



Merrick

 

[JasonCzerak]

That 470hp marine engine spec sheet is fo a HPCR, and it shows a max EGT of 1333. 4, with almost 1k of torque around 2k RPM.



It also shows that full power was not to be used more than one hour out of every eight hours, and was for leisure use, where the engine was not going to be used more than 500hrs a yr.



IT also said that peak power had to be made 200rpm less than full operating RPM.



Merrick

So it's redline is just 200RPM higher then our trucks. I start to lose power at just over 3000 and holds out at 3200.



So it's basically our motor, turned up from cummins.

 

[RustyJC]

Remember, marine engines have an infinite supply of cold water for engine, charge air and oil cooling. That has a whole lot to do with their ratings.



Rusty

 

[WDimig]

Remember, marine engines have an infinite supply of cold water for engine, charge air and oil cooling. That has a whole lot to do with their ratings.



Rusty

bingo! with the seawater aftercooler on the engine they get intake air temps down to about 90 deg. F. thats some cool dense air. the head flows more air than the head on our engines, and the exhaust valves have rotator on them to keep them from burning up. i know of another engine of the same size that has even more power that is supposed to be prototype. i cant say anything about it, but i can say this, it's got twins Oo.



wes



edit - by the way the engines still have antifreeze running through them. no sea water, at least the ones that i have worked on.

 

[MCummings]

edit - by the way the engines still have antifreeze running through them. no sea water, at least the ones that i have worked on.

Our 4 cylinder Volvo/Penta Glastron has a water to water radiator.



Merrick