4.5L Duramax for H2s and 1500s:

[XJ4THEKICKIN]

http://www.autoblog.com/2007/06/15/gm-announces-clean-diesel-v8-for-pickups-and-the-hummer-h2/

[tomshouse516]

thatts effin rad i cant wait.

[Never Monday]

I see it ruining diesel in America. Just the way GM did in the 80's. Sorry, I have no faith in GM or diesel V-8's.

[Bebe]

I hate people who come in and say shit like that and don't explain why they think they know so much.:mad3:

[Never Monday]

I hate people who come in and say shit like that and don't explain why they think they know so much.:mad3:

First off, it won't stand the compression necessary with Al head. the current D-max has incredible light weight rods. Now they want to build a lighter diesel. The forces at play in a diesel engine are 3-4 times greater then a gas engine. think base (non boost) compression of 12:1 and on boost compression of 24:1. if it's successful, my guess it will require a rebuild around 150k. GM tried to convert a 350 to diesel in the 80's it was a massive failure. This reads like an LS? being converted to diesel.

I have the credentials with diesel. It's what i do for a living
I have 4.5l engines that have specs at what they are proposing. mine are all cast iron.

[Bebe]

Thats better.

Aren't there small diesel engines, like Mercedes, Isuzu, etc that are very successful?

GM has already designed a diesel engine for the H3, being produced in the South African Plant (IIRC) that will be offered only in Europe, ('08) but we won't see it here in the states until at least 2010.

I for one am looking forward to the towing capacity and the longevity. The I-5 is not as underpowered as most think, but a diesel would just kick ass IMHO.

Here's to the General finally stepping up (again), hopefully it will work this time.

[Never Monday]

VW and Mercedes have had sucess with AL heads on diesels. If GM actually gets it right this wil be a formidable truck. With their joint ventures with Toyota and Isuzu it's posible they picked up some tricks. From the description of the engine I wouldn't try to bomb it. Leave it stock and enjoy the benefit of a TD.

[f5fstop]

Not sure what a diesel and Toyota have in common, since Toyota is now getting their diesel technology from Isuzu. (See article below) As for GM/Isuzu, yes, I believe GM has learned a lot from this leader in diesel engine technology.
As for the old days and the converted 350 gas to diesel, I believe GM learned a valuable lesson, and will not do the same thing again.
If you believe that GM is building an engine that does not already exist and has been tested for hundreds of thousands of miles, guess again.
That article is basically saying GM has designated Tonawanda as the plant that will produce the 4.5L engine. What it does not say is it already exists, and has been tested in five different locations for quite some time.
So far, for a diesel, its been great.

Although widely viewed as a leader in alternative propulsion, Toyota has arguably lagged behind the competition in the diesel arena. But that may be about to change, according to a report by Automotive News.

It turns out Toyota's acquisition of 5.6 percent of Isuzu last week for $375 million may have been an inexpensive solution to the company's diesel needs. The deal gives Toyota access more than 800 experienced diesel engineers, according to the report. These engineers are the same team that developed GM's Duramax engine range for trucks.
http://www.leftlanenews.com/toyotas-isuzu-investment-gives-automaker-diesel-technology.html