dodge caliber srt4 engine

2 min read 27-01-2025

The Dodge Caliber SRT4, a compact performance car launched in 2006, shocked the automotive world with its unexpected blend of practicality and raw power. At the heart of this surprising package lay a potent engine, a modified version of the venerable 2.4L turbocharged four-cylinder. This article delves deep into the specifics of this remarkable engine, exploring its strengths, weaknesses, and the legacy it left behind.

The Heart of the Beast: 2.4L Turbocharged I4 Engine

The SRT4's engine wasn't just a hopped-up version of the standard Caliber's powerplant; it was a meticulously engineered piece of machinery designed for performance. Based on the World Engine (a joint venture between Chrysler and Hyundai), this 2.4L turbocharged inline-four boasted significant modifications to unleash its potential.

Key Engine Specifications and Modifications:

Displacement: 2.4L (2378 cc)
Configuration: Inline-4, Turbocharged
Block Material: Cast Iron (for durability under high boost)
Head Material: Aluminum (for weight reduction)
Turbocharger: Mitsubishi TD04HL-15T (known for its responsiveness)
Intercooler: Air-to-air intercooler for efficient cooling of compressed air
Fuel System: Multi-point fuel injection for precise fuel delivery
Output: 285 hp and 255 lb-ft of torque (factory figures) – significantly boosted over the standard Caliber's engine.

These modifications, coupled with upgraded internals like forged connecting rods and pistons, allowed the engine to handle the increased stress of the turbocharger's boost pressure. This resulted in a surprisingly potent power-to-weight ratio, giving the Caliber SRT4 impressive acceleration and handling capabilities.

Strengths and Weaknesses: A Balanced Perspective

Like any high-performance engine, the Caliber SRT4's powerplant had its strengths and weaknesses.

Strengths:

Impressive Power Output: The 285 hp and 255 lb-ft of torque were exceptional for a compact car at the time, offering exhilarating acceleration.
Responsive Turbocharger: The Mitsubishi TD04HL-15T was known for its quick spool-up, providing immediate power delivery.
Relatively Affordable: Compared to other performance cars offering similar power, the Caliber SRT4 offered excellent value.
Practicality: The hatchback body style offered surprising practicality for a performance car, making it suitable for everyday use.

Weaknesses:

Reliability Concerns: Some owners reported issues with the engine's longevity, particularly with the turbocharger and related components under high-stress driving conditions. Regular maintenance was crucial.
Fuel Consumption: The turbocharged engine's thirst for fuel was significant, resulting in lower miles per gallon compared to more economical vehicles.
Harsh Ride: The performance-tuned suspension, while enhancing handling, made for a firm, sometimes harsh, ride.

The Caliber SRT4's Lasting Legacy

Despite its relatively short production run, the Dodge Caliber SRT4 left a significant mark on the automotive landscape. It proved that high performance wasn't exclusively the domain of expensive sports cars; a practical hatchback could deliver thrilling performance at a surprisingly attainable price point. The engine, while having its quirks, delivered on its promise of raw power, cementing its place in automotive history as a testament to the ingenuity of the engineers who brought it to life. It remains a popular choice for enthusiasts seeking a unique and powerful compact car. Understanding its strengths and weaknesses is crucial for potential owners, ensuring proper maintenance and responsible driving to experience the thrill it offers.