WRX STI EJ20 vs. Evo 4G63T: Which Rally-Bred, Four-Cylinder Is the Better Engine?

The motorsport of rallying is a thrilling and competitive test of a driver’s skill, as well as the power and performance of the vehicle they are piloting. But which engine is best suited to the task? In this comparison, we will explore the Subaru WRX STI EJ20 and Mitsubishi Lancer Evolution 4G63T to find which rally-bred four-cylinder is the better engine.

The WRX STI EJ20 is a 2.0-liter, turbocharged four-cylinder engine. It is the most powerful engine in Subaru’s lineup, producing up to 300 horsepower when equipped with a turbocharger. The engine is designed for a high level of performance, with improved airflow and a higher compression ratio than its naturally-aspirated counterpart. The EJ20 also features a twin-scroll turbocharger and variable valve timing, providing improved response and increased power.

The Mitsubishi Lancer Evolution 4G63T is a 2.0-liter, turbocharged four-cylinder engine. It has been a mainstay in the Mitsubishi lineup since 1992 and is the engine of choice for the Lancer Evolution. The 4G63T is capable of producing up to 350 horsepower when equipped with a turbocharger. It features a cast-iron block, improved airflow and a higher compression ratio than its naturally-aspirated counterpart. The 4G63T also features a large, single-scroll turbocharger and variable valve timing, providing improved response and increased power.

When it comes to performance, the WRX STI EJ20 and the 4G63T are neck-and-neck. The EJ20 has the edge in terms of power, but the 4G63T has the edge in terms of response. Both engines are capable of producing impressive power, with the 4G63T outpacing the EJ20 by 50 horsepower. The EJ20 is more efficient and offers better fuel economy, but the 4G63T has the edge in terms of performance.

In terms of reliability, both engines are highly reliable. The EJ20 has been known to suffer from head gasket failures, but this is typically due to improper maintenance or tuning. The 4G63T is a strong and reliable engine, but it can suffer from turbocharger failures if not maintained properly.

Overall, both engines are great choices for a rally car. The WRX STI EJ20 offers impressive power and efficiency, while the 4G63T offers better response and more power. Ultimately, it comes down to personal preference and the specific needs of the racer.

In conclusion, the WRX STI EJ20 and the 4G63T are both excellent choices for a rally-bred four-cylinder engine. Both engines offer impressive power and performance, but the 4G63T has the edge in terms of response and power. It ultimately comes down to the needs of the driver, but both engines are reliable and capable of producing great performance.