6/2/2023 0 Comments Twin charged engine![]() ![]() Since the 4G63 features a cast iron block, they can handle a lot of power on the factory sleeves. Not too many people have the older stuff anymore.” “They have the Gen I, which is a six bolt, and a Gen II, which is a seven bolt. “The most common and the most rebuilt ones are the 4G63, which would be the Evo 8 and 9s,” says Aaron Yaghoubian of Arlington Machine. It was equipped with Mitsubishi’s variable valve timing system, MIVEC, had a revised turbocharger, extended reach spark plugs, and two-piece rings. The final version of the 4G63 engine was found in the Lancer Evolution IX. They are referred to as the “six bolt” and “seven bolt” engines, respectively. In May 1992 to 2006, Evolution versions had lighter rods and use seven bolts to secure the flywheel to the crankshaft. Later versions also received Mitsubishi’s variable valve timing system, MIVEC.įrom 1990 to late April 1992, the engine came with thicker connecting rods and the use of six bolts to secure the flywheel to the crankshaft. The DOHC version is found in various Mitsubishi models including the Lancer Evolution I-IX. Both versions were available in either naturally aspirated and turbocharged form. The 4G63 is a 2.0 L, 85mm bore and 88mm stroke engine, which came in both SOHC and DOHC iterations. We caught up with Aaron Yaghoubian of Arlington Machine in Riverside, CA to get an idea of what it takes to make maximum horsepower with these engines. First introduced in the 1980 Lancer EX 2000 Turbo, the 4G63 engine has become a mainstay for performance-minded racers and engine builders alike.
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