The F20C and F22C engine is unrelated to the F-series found in the mid 90s Honda Accord and Prelude. It shares many properties with the K-series. This engine, unlike most F-series engines, has two counter-rotating overhead cams, a VTEC system for both the intake and exhaust camshaft, carbon-fiber reinforced cylinder liners (FRM), molybdenum disulfide-coated piston skirts for reduced friction, and uses a more modern chain driven valvetrain as opposed to a belt driven system. It is the only 4-cylinder engine that is designed to sit longitudinally for rear wheel drive.
taken from wiki.
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