So what is the 5.9 capable of?
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So what is the 5.9 capable of?
I know the bottom end of our trucks is rock solid, but at what horsepower level do you have to think about upgrading some of the parts, like rods, and pistons, or maybe the crank?
#4
See below for the Cummins medium duty ISB engines, which are governed to a lower rpm than the one in the Ram. You can obiously get more out of one with a box and other mods, but the one below are the ones that Cummins is willing to offer, provide a warranty for, and advertise as having an averge life of 350k miles.
http://www.everytime.cummins.com/eve...sb_ratings.jsp
HP - Torque - governed rpm
ISB275 660@1600 2600
ISB260 660@1600 2500
ISB260 550@1900 2600
ISB245 660@1600 2500
ISB230 520@1600 2500
ISB215 520@1600 2500
ISB200 520@1600 2500
ISB185 420@1600 2600
http://www.everytime.cummins.com/eve...sb_ratings.jsp
HP - Torque - governed rpm
ISB275 660@1600 2600
ISB260 660@1600 2500
ISB260 550@1900 2600
ISB245 660@1600 2500
ISB230 520@1600 2500
ISB215 520@1600 2500
ISB200 520@1600 2500
ISB185 420@1600 2600
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It won't be much longer until the 5.9 or its successor (the 6.7?) will be in the same boat as the V8 guys. Cost cutting will make rods weaker and decrease bottom end strength. Yes, I'm pessimistic.
The stock bottom end on these things is about as overbuilt as you will find in a production engine. At least for now.
The stock bottom end on these things is about as overbuilt as you will find in a production engine. At least for now.
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i wouldnt worry about internals at all ..just keep an eye on EGTs, an dfuel pressures and dont be stupid running full throttle with a 800 hp cummins for an hour straight
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#8
Originally Posted by mr T
i wouldnt worry about internals at all ..just keep an eye on EGTs, an dfuel pressures and dont be stupid running full throttle with a 800 hp cummins for an hour straight
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Originally Posted by HappyGA
Interesting, I knew they were rock solid, but you here of the V8 crowd having to upgrade so that they can go with more power..
Something to think about.
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still doubting the internals of a cummins?
here:
http://www.atsdiesel.com/Video/Munci...20040609_1.MOV
here:
http://www.atsdiesel.com/Video/Munci...20040609_1.MOV
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Originally Posted by HOHN
It won't be much longer until the 5.9 or its successor (the 6.7?) will be in the same boat as the V8 guys. Cost cutting will make rods weaker and decrease bottom end strength. Yes, I'm pessimistic.
The stock bottom end on these things is about as overbuilt as you will find in a production engine. At least for now.
The stock bottom end on these things is about as overbuilt as you will find in a production engine. At least for now.
brandon.
#12
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I don't think the dodges will have a problem as long as they buy from cummins and detune for stock.
It all has to do with potentials. If what you have out of factory is 90% of possible then you could have a problem. They aren't going to design an engine that is stronger then it needs to be. It doesn't make $$ sense (ferd, chebby)
BUT>>>
if you buy an engine that is "factory" stock setup for heavier loads then detune it to keep the running gear in your application from turning into pretzels. Then you have much more room to play.
Either way a determined mod maniac can turn any engine into scrap, given enough money and a large enough lack of sense.
It all has to do with potentials. If what you have out of factory is 90% of possible then you could have a problem. They aren't going to design an engine that is stronger then it needs to be. It doesn't make $$ sense (ferd, chebby)
BUT>>>
if you buy an engine that is "factory" stock setup for heavier loads then detune it to keep the running gear in your application from turning into pretzels. Then you have much more room to play.
Either way a determined mod maniac can turn any engine into scrap, given enough money and a large enough lack of sense.
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