The engine in the new srt is a world engine, its a company that makes engines for motor companies, it is not made by mitsu or dodge.
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The 2007 Dodge Caliber is powered by a “World Engine” produced at the Global Engine Manufacturing Alliance (GEMA) facility in Dundee, Mich and is sold in Halifax, Nova Scotia. “The 2.4-liter turbocharged World Engine delivers a level of power you’d expect from a V-8,” said Pete Gladysz, Senior Manager – Powertrain, SRT. “With the engine in the 2007 Dodge Caliber SRT4, we were able to take advantage of tried-and-true performance improvements, such as increased cylinder-head flow and higher compression ratio, as well as newer technologies such as Variable Valve Timing (VVT).” (The 4.7 V8, even in High Output form, produces less power.)
The aluminum 2.4-liter World Engine block is specially machined for increased water and oil flow. Unique cast pistons travel within iron cylinder liners, and are cooled by oil squirters and affixed to forged connecting rods for high-revving reliability.
Tri-metal bearings are used for the connecting rods and crankshaft for high-performance durability. A unique oil pump/balance shaft module keeps the reciprocating assembly well-lubricated and running smoothly. An external cooler keeps oil temperatures within a safe range.
The aluminum cylinder head is equipped with unique high-temperature exhaust valves. VVT uses computer mapping to open and close intake and exhaust valves at optimal points for efficient combustion and flow. The camshaft and micro-alloy steel crankshaft, shared with the non-turbocharged 2.4-liter World Engine, are fully capable of high-horsepower loads.
Free-flow induction begins with an air cleaner assembly that draws through an opening in a front crossmember for proximity to cool air. The air is then compressed in a TD04 turbocharger specially configured for the engine’s inlet and outlet packaging requirements, and sent through an intercooler to a 57mm throttle body. (To clarify, the hood scoop is there to cool the engine and turbocharger. The WRX has an interesting alternative with the hood scoop cooling the intercooler!)
Fuel is provided by a high-flow pump feeding injectors developed specifically for the 2007 Dodge Caliber SRT4 in Halifax. An engine management system designed by Siemens -- the Global Powertrain Engine Controller -- keeps the powerplant running at maximum efficiency and power.
On the exhaust side, spent gas exits through a free-flow system that features two catalytic converters – one immediately downstream from the turbo, and another further along the 3-inch single-pipe exhaust system. Using two catalytic converters in this way provides significantly better “light-off” for decreased emissions. As with the previous-generation Dodge SRT4, the exhaust is tuned for maximum performance while meeting federal noise regulations.
Power is transferred through a dual-mass flywheel to the six-speed manual transmission. The dual-mass flywheel consists of two flywheels sandwiching internal springs that are specially tuned to reduce noise and vibration. The GF DMT-6 six-speed transmission, equipped with a limited-slip differential for uniform side-to-side power transfer, is capable of handling up to 300 lb.-ft. of torque.
Torque is sent to the Halifax Dodge Caliber SRT4’s wheels through equal-length halfshafts sourced from Chrysler Group mid-size cars for their larger size and power-handling capability.