 Dual-scroll exhaust turbine...  Dual-scroll exhaust turbine enhances velocity, reducing turbo lag to an insignificant level without adversely affecting top-end performance. |  Direct injection puts the...  Direct injection puts the fuel-injection nozzle right in the combustion chamber, enhancing combustion efficiency and allowing for a leaner mixture. The Ecotec turbo's piston is specially contoured to aim the injected fuel at the spark plug. |  Additional resistance to detonation...  Additional resistance to detonation is achieved with oil spray injectors that fire oil into a cast-in channel inside the piston, taking heat away from it. |
| Ecotec 2.0-Liter Turbo Specifications |
| Assembly Site: | Spring Hill, Tennessee |
| Application: | '07 Pontiac Solstice GXP |
| Type: | 2.0-liter DOHC turbocharged I4 |
| Displacement (ci / cc): | 122 / 1,998 |
| Bore x Stroke (in x mm): | 3.38 x 3.38 / 86 x 86 |
| Block Material: | 319 aluminum |
| Cylinder Head Material: | 356 T6 aluminum |
| Intake Manifold: | Cast aluminum |
| Exhaust Manifolds: | Cast stainless steel |
| Compression Ratio: | 9.2:1 |
| Valve Configuration: | Overhead cam; four valves per cylinder (35.1 mm int. / 30.1 mm exh.) |
| Valve Lifters: | Hydraulic lash adjuster, roller finger follower |
| Throttle Body: | 58 mm |
| Firing Order: | 1-3-4-2 |
| Fuel System: | Gasoline high-pressure, variable-rail pressure, spark ignition direct injection (SIDI) |
| Horsepower (hp / kW): | 260 / 194 at 5,300 rpm (SAE certification pending) |
| Torque (lb-ft / Nm): | 260 / 353 at 2.000-5,300 rpm (SAE certification pending) |
| Fuel Shut-Off: | 6,300 rpm |
| Crankshaft: | Forged steel |
| Connecting Rods: | Forged steel |
| Additional Features: | Air-to-air intercooled dual scroll turbocharger system, variable valve timing, electronic throttle control, pressure-actuated piston cooling jets, extended-life spark plugs, extended-life coolant, GM oil level sensor, extended-life accessory drivebelt, Nimonic sodium-filled exhaust valves |
 This shot of combustion chamber...  This shot of combustion chamber shows the four-valve layout, the centrally located spark plug, and the direct injection nozzle, located behind the intake valves. The Ecotec engine family has benefitted from many high-tech features that help make this turbo powerplant the most powerful engine per liter that GM has ever produced. |  The direct injection system...  The direct injection system is shown here with the electronic control module. It uses a returnless delivery system that operates at over 1,200 psi. |  This drawing shows the basic...  This drawing shows the basic layout of the intercooler system. It reduces the charge temperature by over 200 degrees, greatly improving air density and the engine's resistance to detonation. |
 Variable valve timing is used...  Variable valve timing is used for both intake and exhaust valves. It is computer-controlled... |  ...and uses cam position sensors...  ...and uses cam position sensors for precise control. Valve overlap can be optimized in this manner to increase torque. | |