This is exciting news folks—and arguably some of the most important engine news to come out of GM in years. GM will introduce an all-new 4.5L V8 diesel for the 2010 model year for their light-duty full-size trucks and for the Hummer H2.
Here are some key points:
• This is a 100% in-house GM design, and not engineered by Isuzu.
• The turbocharged engine is a DOHC unit with 4-valves per cylinder...
• It's expected to be rated in excess of 310 hp and 520 pound-feet of torque.
• It will meet the stringent 2010 emissions standards, and it will be compliant in all 50 states, making it one of the cleanest diesel vehicles ever produced.
• This engine should be able to fit in the engine bays of any GM product currently using small-block V8s—which could mean some very interesting further vehicle/model applications.
Full story here.
• It will meet the stringent 2010 emissions standards, and it will be compliant in all 50 states, making it one of the cleanest diesel vehicles ever produced.
• This engine should be able to fit in the engine bays of any GM product currently using small-block V8s—which could mean some very interesting further vehicle/model applications.
Full story here.
estreka says:
05:03 PM, 06/15/07
Wow, this is huge. A DOHC 4vpc diesel with better performance than the regular Chevy offerings. Toyota must offer an adequate diesel now. Imagine if this were to get displacement on demand.
rsholland says:
05:18 PM, 06/15/07
Well, Toyota has just such an engine too—and it's in production right now, but sold in Australia.
http://66.160.188.111/Straightline/2259
Again, 4.5L V8, DOHC with 4-valves. I bet this goes in the Tundra.
rsholland says:
05:21 PM, 06/15/07
More here on the Toyota 4.5 diesel.
http://www.toyota.com.au/landcruiser-70-series
billt9 says:
10:18 PM, 06/15/07
The Toyota 4.5L V8 turbo diesel is
202 hp @ 3400 rpm
317 lb-ft @ 1200 rpm
20 mpg combined on a 4828 lb SUV.
Unimpressive last-gen engineering.
rsholland says:
08:26 AM, 06/16/07
The Toyota diesel is all-new. It's only been on sale a few months, so I'm sure the tecnology is up to date. I suspect it's tuned to meet the (more agricultural) needs of the Aussie commercial-grade Land Cruiser 70. I think there's a lot of untapped potential there. Certainly if it comes Stateside for Tundra duty it will be tuned much higher than that.
One thing about commercial-grade diesels is that they are often offered in wide ranges of tuning. For example this 7.2L Detroit Diesel (see link) is offered in horsepower ranging from 190 – 350.
http://www.detroitdiesel.com/engines/mbe900/specs.aspx
Is the 190 hp version inferior to the 350 hp version? Of course not. It's just designed for a different application. I'm sure that's the case with the 4.5L Toyota diesel. There's a lot more potential than just 202 hp there.
ateixeira says:
09:46 AM, 06/22/07
I think this is very promising. I can't believe noone sells one now, actually.
kacansas06 says:
03:19 PM, 03/11/08
I think everyone misses the point of a diesel engine, torque! Give me torque and I can pull things. Give me horsepower and I can drive fast but why drive fast in a blocky bulky truck?? For that I would own another sportscar!