Nope, the new 2.4L will be offered, it has an 88mm bore and 98mm stroke...
But the (approx. 200-210HP) supercharged ECOTEC is still the de-stroked 2.2L ECOTEC that's in the Alero and what not, it has an 86mm bore and a de-stroked crank, also 86mm, for an even 2.0L
Quote:
Originally posted by "GM Press Release"
Supercharged Ecotec: Fast and furious at a competitive price
A significant new variant of the original Ecotec 2.2-liter engine is the Ecotec 2.0-liter supercharged, available for the first time in the high-performance 2004 Saturn Ion Red Line edition.
The Ecotec 2.0-liter supercharged slams out a formidable 205 horsepower at 5600 rpm and 200 lb.-ft. of torque at 4400 rpm. Development of this highest-performance Ecotec variant (LSJ) leveraged several areas of GM Powertrain expertise, including GM Racing, GM High Performance Vehicle Operations (HPVO) and charged intake specialist Saab, a wholly owned GM subsidiary.
To attain the durability targets GM Powertrain engineers require of every GM engine, the Ecotec supercharged 2.0-liter received upgraded components in critical stress areas. Experience in the tortuous crucible of the National Hot Rod Association’s Championship Drag Racing series – where the Ecotec has developed a “bullet-proof” reputation as a formidable powerplant for front-wheel drive dragsters – told engineers where the production-car supercharged Ecotec would most benefit from heavy-duty components. Additionally, the Ecotec supercharged 2.0-liter borrows knowledge gleaned by Saab engineers when adapting the Ecotec to the demanding specifications of high-output turbocharged engines.
At the heart of the Ecotec supercharged 2.0-liter is an Eaton M62 helical roots-type supercharger. Engineers selected the Eaton unit because of its optimum response characteristics and ease of “packaging” with the Ecotec architecture, according to Grant Brady, design system engineer. Maximum supercharger boost pressure is 12 pounds, and the system includes an air-to-water intercooler to increase intake-charge density, which in turn enhances power and reduces a supercharged engine’s propensity to “knock” at high boost levels.
The Ecotec supercharged 2.0-liter also is fitted with numerous upgraded components to assure reliability and superior performance:
Sodium-filled exhaust valves more effectively dissipate exhaust heat
A forged-steel crankshaft with induction-hardened fillets and four counterweights
Oil jets cool the underside of each piston with a continuous oil bath
A block-mounted oil cooler and a higher-capacity seven-quart sump
Forged steel connecting rods with a larger I-beam section
Heavy duty pistons with a 23-mm piston pin for increased bearing surface
High-capacity cooling system with larger radiator core and larger dual cooling fans
Coil-on-plug ignition ensures optimum spark under all operating conditions
High-flow, 2.5-inch exhaust system – an almost 50-percent increase – with increased muffler volume reduces power-robbing exhaust backpressure
The Ecotec supercharged 2.0-liter also employs electronic throttle control (ETC), which eliminates the cable connection between the accelerator pedal and the engine throttle.
“Electronic throttle control is an elegant and effective way to add a higher degree of control for the driver,” said Subhedar. “The precision ETC offered is critical for delivering the kind of performance, fuel economy and minimal emissions we expect from this very high performance engine.”
As with the Ecotec 2.2-liter and new Ecotec 2.4-liter, the 2.0-liter supercharged version employs dual balance shafts, fitted in the engine block, to cancel secondary vertical
shaking forces produced by all inline four-cylinder engines. The counter-rotating balance shafts, which rotate at twice the speed of the crankshaft, were a feature GM Powertrain engineers specified from the onset to ensure the Ecotec architecture delivered a high level of refinement and reduced vibration throughout its speed range.
The Ecotec supercharged 2.0-liter engine is built exclusively at Fiat-GM Powertrain’s Kaiserslautern, Germany, engine plant.
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A pic of the supercharged ECOTEC:
