The Mitsubishi 4G63T is a special JDM engine, for sure, but when it comes to the most powerful inline-4 engines, the 4B11T might have a slight edge. In fact, this engine was introduced in 2007 as the replacement for the more famous 4G63. It was produced until 2015, and was designed largely for later versions Mitsubishi Lancer Evolution series, like the Evo X. When it comes to the build, this engine has an all-aluminum construction, doing away with the cast-iron blocks of its predecessors, and not just reducing weight but also improving thermal efficiency.
But it’s power that we are interested in and the 4B11T powered a variety of high-performance models, producing outputs anywhere from 240 to a potent 440 horsepower, as well as torque values ranging from 260 to 412 lb-ft. It’s the top-tier Lancer Evolution X FQ440, one of the most powerful variants, that really pushed the engine to its extremes, producing 440 horsepower. The engine’s design had a lot to do with this power. Its square shape, with an 86 mm bore and stroke, allowed for free-revving and power output across a wide rpm range. Mitsubishi’s MIVEC technology enabled variable valve timing on both the intake and exhaust camshafts, also improving performance and efficiency.
Despite being discontinued in 2017, the 4B11T is still a popular choice for modders and tuners. With the right mods, we might be looking at horsepower values that are much higher than the factory settings.
