One of the most significant pillars of the Caliber's development was the Global Engine Manufacturing
Alliance (GEMA). This joint venture between Chrysler, Mitsubishi, and Hyundai was established to manufacture
an advanced family of inline four-cylinder engines, operating under a lean manufacturing and high-technology
philosophy. The resulting engines, known by Chrysler as the "World Engine", were designed to be
cost-efficient, competitive in fuel consumption, and capable of meeting global emissions regulations.
The basic design of these engines involved a high-pressure die-cast aluminum block, aluminum cylinder
heads, and siamesed cast iron cylinder liners. The use of these liners allowed Chrysler to alter the bore
and stroke to produce different displacements (1.8L, 2.0L, and 2.4L) using the same basic block
architecture. All gasoline engines in the Caliber featured dual overhead camshafts (DOHC), 16 valves, and a
Dual Variable Valve Timing (Dual VVT) system. This electronic system continuously adjusted the timing of the
intake and exhaust valves, optimizing torque and power across the entire rev range.
The GEMA plant in Dundee, Michigan, became a model of industrial efficiency, celebrating the
production of the millionth engine just three years after starting operations in 2005. However, the alliance
was dissolved in August 2009, when Chrysler acquired Mitsubishi's and Hyundai's stakes, integrating GEMA as
a wholly-owned subsidiary after the new partnership with Fiat.
Technical Specifications of the World Engine (Initial Phase)
| Technical Attribute |
1.8 L World I4 Engine |
2.0 L World I4 Engine |
2.4 L World I4 Engine |
| Power (hp) |
148 @ 6,500 rpm |
158 @ 6,400 rpm |
172 @ 6,000 rpm |
| Torque (lb⋅ft) |
125 @ 5,200 rpm |
141 @ 5,000 rpm |
165 @ 4,400 rpm |
| Bore x Stroke |
86 mm x 77 mm |
86 mm x 86 mm |
88 mm x 97 mm |
| Compression Ratio |
10.5:1 |
10.5:1 |
10.5:1 |
| Standard Transmission |
5-speed Manual |
CVT2 / Manual (2010+) |
CVT2 / Manual |
| Availability |
2007–2009 (SE, SXT) |
2007–2012 (SE, SXT) |
2007–2011 (R/T, Rush) |
The 1.8-liter engine served as the entry-level option focused on fuel economy, while the 2.0-liter balanced
performance for daily use. The 2.4-liter engine was reserved for top trims, such as the R/T, providing power
delivery comparable to small-displacement V6 engines of the time.