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Would the real 4.5 duramax please step forward

dont work?

dont work?
worked for me once...

dont work?

X2

x3, nada

x20:(

Im going to the SF auto show Sunday and will try to post some pictures for all you guys if they have it there.

x4256 :( SFA on the link. I would love to see pics with out the engine cover.

can't wait :o: I have been waiting too long for this truck to be built!!!!:D

http://digiads.com.au/car-news/new/images/article_10492-img_0.jpg

Thanks......Looks like Twin turbo's too??

http://digiads.com.au/car-news/new/images/article_10492-img_0.jpg

it does look like compound

Technical highlights of the engine include aluminum cylinder heads with integrated manifolding; a variable-vane turbocharger with intercooling; a Compacted Graphite Iron (CGI) block for a stronger and lighter engine base (compared to lower-strength aluminum or heavier grey cast iron); and fracture-split main bearing caps and connecting rods for a precise fit. An electronically controlled, ultra-high-pressure, common-rail fuel system is used, which has the ability to inject fuel five times per combustion event to control noise and emissions.

"Thanks......Looks like Twin turbo's too??"


I'm guessing its just the intake manifold

From all the discriptions I have read it looks to be a single Variable Vane turbo....

yup one turbo. sorry guys. but look forword to 2009 6.6 with compounds

http://www.blogsmithmedia.com/www.autobloggreen.com/media/2007/08/duramax-4500.jpg



Here is the "other 4.5 Duramax"

Maybe this is the twin turbo version

yup one turbo. sorry guys. but look forword to 2009 6.6 with compounds

Compounds?

Compounds?

Dual Turbos

Dual Turbos

oh yay!

http://www.blogsmithmedia.com/www.autoblog.com/media/2007/06/x08pt_8c091.jpghttp://www.blogsmithmedia.com/www.autobloggreen.com/media/2007/08/duramax-4500.jpg

Hmmmmm

doesnt even look like the same motor lol

heres the link to the web page that i got the second pic from

http://www.autobloggreen.com/2007/08/25/details-of-gms-new-4-5l-duramax-diesel-v-8/


if the new 4.5 has reverse flow heads, that aluminum manifold runing from head to head must be the engine intake manifold

that or egr

http://www.sae.org/automag/technewsletter/071204Powertrain/08.htm

definitly forward thinking ,good to see gm might be getting the upper hand on diesel engines

Here's a few quick shots I took at SEMA this year of one in a 2500HD suburban.

And to think I wasn't goning to ever buy a new truck again. DAMN you GM!!! That motor sounds impressive, I really like the innnovation involved.

can't wait :o: I have been waiting too long for this truck to be built!!!!:D


ME too x 4,878,987,984,690.... What stinks is that I really want it when it first comes out, but I'm not a testing kind of person. You know for all of those possible recalls...:D

i thought it was gonna bea v-6 tho. oh well.

so whats the power gonna be like in this anybody have a clue.

http://i69.photobucket.com/albums/i70/fvmurray1/Denali/Two_sided_silhouette_of_diesel_V8_c.jpg

(Thanks for the link Quadrant)

Ok this is what I hear from my local dealership, this puppy goining to have a complete new design, with 310 hp and 550 torgue, and a massive 30 Plus mpg, it will be mostly in silverado 1500 and tohoe's and H2's the werid parts youre seeing on top is due to the fact that theres no longer any exhaust or intake which gm says will save cusumers about 600 dollors alone, I just happened to be at my dealership today and seen they have one in stock, but its not out on display and apartently their told to not diplay it, its only reason for being there is for techs to learn about it, I'm guessing there passing it around to let tech seee it, But I was able to seat in it and hear it run, ITS QUIET, even more so then the LLM, you can bet I'll be in one asap, love this baby.

I guess this could go in any of theses 4.5 threads, but I'll post it here...

Snitched from another site:

There's some reduncency from earlier posts here, but was from a August report of a test drive by journalist;

"The company says the new engine meets BIN 5 requirements for 2010, which are much more stringent than BIN 5 levels for 2007. Our first impressions are that the all-new V-8 is gutsy, smooth, quiet, clean, which we experienced from a drive in a current model Buick Ranier mid-size SUV fitted with the new engine.

To meet emissions, the engine uses an oxidizing catalyst, followed by an SCR (selective catalytic reduction) catalyst, and then a particulate filter about the size of a large pickup muffler. “Today is a solution that meets the NOx challenge,” said Charlie Freese, head of diesel engineering for GM. Freese added that the new engine is “more than 3.0 liters and less than 6.6.”

The SCR system was chosen for its flexibility with different qualities of fuel, Freese said. “Liquid urea is what we use. Our intention is to size the tank to span one oil change interval.” Freese said that size would be about five to seven gallons, which would add about 40 to 55 pounds to the vehicle.

New engine will have variable turbocharging, but Freese would not say if it would be a single, double, or even a tri-turbo system.

Two days before the engine was introduced to journalists, it was driven by GM top executives, who made comments regarding the low noise and good launch feel, according to engineers. To us the engine was reminiscent of Audi’s 4.0-liter diesel V-8, except the GM engine is claimed to meet 2010 BIN 5 emissions standards, which the Audi cannot presently meet.

The engine was only running in the test Ranier a week before the demonstration drive, although it has been in development for more than a year. It is mated to a six-speed automatic, but a new version of the new rear-drive six-speed family—which are the 6L45, 6L50, 6L80, and 6L90—that are being introduced for 2007.

Cruising on a level road in sixth gear, the engine revved at 1500 rpm at 56 mph. At part throttle acceleration it shifts from 1500 to 2000 rpm, and would get into fifth gear by 35 mph. The tall gearing and low-revving steady torque output is consistent with V-8 diesels from BMW and Audi, but something unusually refined for a Buick SUV. The maximum torque output of the new engine is 520 lb ft beginning at 1800 rpm and staying strong up to 4500 rpm. The new engine is promised to “deliver industry leading power and torque and refinement in noise and vibration,” said Freese. “It hits peak torque at 1800 rpm and goes out to 4500 rpm.”

In addition, Freese promises “this engine is going to be at benchmark levels for noise and vibration.” So far we feel GM has hit that mark. The engine produces 330 hp, according to Freese.

We noticed some diesel combustion rattle noise—characteristic to all diesels and a product of the way combustion occurs—but it can be heard only from outside and behind the vehicle. Inside there is no telltale diesel noise, apart from brief constant-speed whine events from the turbo. The engine was running on ULSD (ultra low sulfur diesel) fuel available in the U.S. , said engineers, not a cleaner GTL (gas-to-liquid) blend or other more highly refined fuel more common in Europe .

Launch speed is impressive, although immediate take-off from a stop feels a bit bogged down. Engineers explained that the traction control system was calibrated to clamp down on the launch because wheelspin and axle tramp would otherwise result. Above 5 mph, the diesel-equipped Ranier pulled strongly, and at full acceleration shifted just above 4000 rpm in the middle gears of the six-speed.

On one zero-to-60 mph sprint, the Ranier took about ten seconds, however, that was with five adults on board, with the aggressive traction control system engaged.

The engine is an all-new GM design, not a version of anything from Isuzu, which is where the previous generations of the 6.6-liter Duramax came from. The engine is destined to be used in vehicles “under 8500 lb GVW”, said Tom Stephens, vice president of GM Powertrain division.

General Motors’ direction is to put diesels in large vehicles and focus on optimizing gasoline engines for small vehicles. “Diesel would pay back earlier for the big truck,” says Freese, “The Saturn Green Line hybrid would pay back earlier than a diesel.”

New diesels will cost “several thousand” dollars more than comparable previous diesels not subject to the stringent new emissions standards.

The mid-size Buick Ranier was originally developed for a family of inline engines, five and six cylinders, and the current gasoline 5.3-liter is a tight fit inside the engine compartment. Fitting the new diesel engine inside this space was of great importance to GM, said Freese. “To really be able to have maximum flexibility in how we use this powertrain, it has to fit in the envelope of the gasoline small-block engine. It gives us a lot of flexibility to introduce this powertrain,” he explained. “This is just a mule, not a vehicle that will go in production. This is intended to show this powertrain fits under the hood." "