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Old 03-05-2012, 10:15 AM   #51
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Originally Posted by acadianbob View Post
Turbo'd engines have stronger blocks whether gas or diesel in most cases I believe. I guess the point I was trying to make is that it is the turbo's that are the key to torque creation.
Actually LOL its the cylinder pressure and stroke length. But yes Turbo boos is also a key point.

Read here: Banks Power | Why Diesels Make So Much Torque
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Old 03-05-2012, 11:13 AM   #52
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Trucks have been doing this a while but now its from factory: GM to offer Natural Gas Powered Trucks
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Old 03-22-2012, 08:09 PM   #53
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I have been in the car repair business my whole life, My father started a independent repair shop in 1965 and I now own and operate it, I have seen the best and worst of most all vehicles and used to be a total GM fan, Until the 80's that is, GM has gave me and my tech's a decent living, they have had so many different problems with the vehicles that it is no suprise that the foreign cars gained market share.
We would have 5-15 GM trucks in our lot with transmission failures most of the year, if not that it was the fuel pumps or the car sized rear axle failed or numerous electrical problems, Sure, Ford and Dodge has had many issues also but not near to the scale of GM's
As for the mileage issues, I agree the GM has generally been better on fuel but mostly due to it having lighter built componets that take less power to rotate or move, The GM engines have been pretty good, the ls series being the best but while they seem to perform well unloaded soon as you hook a heavy trailer to them the rest of the truck fails.
I just traded my 2006 5.4 F-150 for a Eco and can't beleive how good of a powertrain Ford has going on with thier new trucks, Awesome towing power and 21-23 mpg in a Crew Cab 4x4 truck, and after driving my last 4 F-150's over 100,000 miles each and having no failures with the powertrain of them I have no reason to think the ECO won't do the same,
The others will need to turn to turbos or new technology also to match this powertrain and the EPA's demands.
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Old 04-12-2012, 08:43 AM   #54
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It will take GM awhile to tear down an Ecoboost, examine it, and try to duplicate it. By then, Ford will have moved on.
I'm neither partial to GM or Ford, have owned both over the years. But here is a relevant bit of info -- I bought a 2002 top of the line Buick Regal new, and the squirrel cage was a supercharged V6. I drove that car for 6 years and 84,000 miles before I sold it. It got as good a mileage as a non supercharged V6, and if you stepped into it, I mean it was jack rabbit quick gone, with no lag. The torque was also quite impressive. The vehicle was a real sleeper. And I never had any problems with the engine or the supercharger. It was quite reliable.

So GM does have some experience with this type of technology, if they choose to put some similar technology as the Ford Ecoboost, in their truck line.
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Old 04-13-2012, 06:03 AM   #55
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Has everyone forgotten about the Buick Regal Grand Nationals??? That was and still is one badazz motor. What about the Cyclones and Typhoons that had a turbo charged 4.3 V6. GM has played with turbos for a looong time.
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Old 04-13-2012, 07:57 AM   #56
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Any backyard mechanic can put a turbo on a motor to make horsepower, but it is quite another thing to be able to put out the torque that Ford has done with the Ecoboost. That is what is impressive with that motor.
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Old 04-13-2012, 09:46 AM   #57
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Has everyone forgotten about the Buick Regal Grand Nationals??? That was and still is one badazz motor. What about the Cyclones and Typhoons that had a turbo charged 4.3 V6. GM has played with turbos for a looong time.
They were ahead of the game back then, they would out run Mustangs, Camaro's and even Corvette's, but they are low tech in this day of modern engines.
The EcoBoost engine has 11 to 1 compression with twin turbo's and runs on 87 octane fuel, the variable cam timing for both intake and exhaust cams, and direct injection make it all possible, There is nothing on it that hasn't been done before other then putting it in a reliable package and a 1\2 ton pickup truck. In the past that technology was used in high end German vehicles only.
Gm has the 3.6 engine they use in a bunch of their vehicles, They have had some issues with it but will get it panned out, I would bet you will see that engine in the all new Silverado in a similar package as the EcoBoost but they will generate slightly better numbers, Bring it on! Competition brings us consumers better products.
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Old 04-13-2012, 06:07 PM   #58
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This should be gm's answer to eco boost !

Squires Turbo Systems - Fullsize GM Truck Turbo Systems
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