04.5 duramax LLY
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From: Indiana
04.5 duramax LLY
Has anyone saw the new specs for the duramax. Here is a high light of the new features I read:
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?
Chapter President
Joined: Feb 2002
Posts: 6,102
Likes: 2
From: Red Deer, Alberta Canada
Its a V-8 
...
The industrial B series engine uses VGT technology as well and utilizes the same features. This turbo setup is not available on the Dodge version yet, though there are some rumours brewing..
Well at least they cut down some of the time to replace the injectors, as it seems to be a necessity..
J-eh
...The industrial B series engine uses VGT technology as well and utilizes the same features. This turbo setup is not available on the Dodge version yet, though there are some rumours brewing..
Well at least they cut down some of the time to replace the injectors, as it seems to be a necessity..
J-eh
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From: FL
Re: 04.5 duramax LLY
Originally posted by tmoore
Has anyone saw the new specs for the duramax. Here is a high light of the new features I read:
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?
Has anyone saw the new specs for the duramax. Here is a high light of the new features I read:
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?
Registered User
Joined: Oct 2003
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From: Va.
I would hate to be the test station on that turbo system. It sounds great on paper, but what happens when it gets a few hard miles on it and a little rust and soot. Too many moving parts that can mess up. And its not a Cummins its a chebby. Only time will tell but it wouldn't be on my time or dime.
Only time will tell but it wouldn't be on my time or dime.
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Joined: Jul 2003
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From: coupeville wa.
Well.....the turbos have been around awhile and they are good.
But if the eng. is v8 thats bad real bad bad bad if a v8 was needed they would be in semi trks and that has been history already!
with a stait 6, 1 head is nice not 2, The exhust and turbo match up well -never yet on a v configuration
t.m.o.
But if the eng. is v8 thats bad real bad bad bad if a v8 was needed they would be in semi trks and that has been history already!
with a stait 6, 1 head is nice not 2, The exhust and turbo match up well -never yet on a v configuration
t.m.o.
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From: Clearwater, FL
Look under the hood of a V-8 diesel and then look under the hood of a '03 Dodge Cummins and tell me which you would wanna work on. Lots of room and everything is neatly organized in the Cummins.
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Joined: Jan 2004
Posts: 2,331
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From: Kalamazoo, Michigan
V-8 diesels are like helicopters... in theory they really shouldn't fly, but they do, so people use them. But when something goes wrong, it's a real disaster!
Just my opinion tho. LOTS of them around, so they MUST be good!
Just my opinion tho. LOTS of them around, so they MUST be good!
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From: FL
Originally posted by welder27
Look under the hood of a V-8 diesel and then look under the hood of a '03 Dodge Cummins and tell me which you would wanna work on. Lots of room and everything is neatly organized in the Cummins.
Look under the hood of a V-8 diesel and then look under the hood of a '03 Dodge Cummins and tell me which you would wanna work on. Lots of room and everything is neatly organized in the Cummins.
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Joined: Nov 2002
Posts: 147
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From: Des Moines, Iowa
One main reason that you don't see a V-8 in an over the road application is because of the huge push for weight savings. A 3408 Cat, or a 8V92 Detroit will run all over any currently built inline class 8 motor out there, but they are very big, heavy, and have poor fuel milage. Not to mention they will not pass the EPA emission standards.
As far as multiple heads being bad, the most widely built Cummins ever, the N series 855 cu. in. engine has 3 heads, one for every two cylinders. The big KTA 1150, one of the best engine Cummins ever made, IMHO, has one head per cylinder....
As far as multiple heads being bad, the most widely built Cummins ever, the N series 855 cu. in. engine has 3 heads, one for every two cylinders. The big KTA 1150, one of the best engine Cummins ever made, IMHO, has one head per cylinder....
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From: Raleigh, NC
Re: 04.5 duramax LLY
Originally posted by tmoore
Has anyone saw the new specs for the duramax. Here is a high light of the new features I read:
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?
Has anyone saw the new specs for the duramax. Here is a high light of the new features I read:
1) Garret Variable-Vane Turbocharger:
This is the big news - virtually instant boost and a built-in engine brake at the same time! Since the vanes are PCM controlled, it can be used to do some slick things, like closing the vanes under cold engine operation to generate more backpressure and improve warmup times. This feature is also used with the high idle (more on that later)
But here is the trick feature: The vanes can be closed for an exhuast brake! (In a variable-vane turbo, all of the exhaust gases pass through the vanes) And the PCM is programmed to do that.
2) New Design Fuel Injectors:
I've seen the new engine, and boy are these injectors ever easier to get at. Of course, Bosch has apparently fixed the ball-seat erosion problem that I noticed alluded to in other discussions. So, now that they are easy to get at, we probably won't be changing them as often.
3) Fast-Heating Glow plugs:
They heat to 1000 degrees celsius in 2 seconds. Enough said
4) High Idle system built-in:
No more wiring high idle switches! The system can be activated with a little song and dance with the ignition, accel pedal and brake pedal. The high idle system responds to engine coolant temperatures and automatically ramps up the idle when it cools down from idling. (as can happen in the colder parts of the country)
What do you guys think?