The F20C engine was manufactured from 2000 to 2009 by Honda Motors. The F20C is an inline-4 gasoline engine with a fuel injection system produced for use in the Honda S2000. It is among the few 4-cylinder automobile engines from Honda that are designed to sit longitudinally for rear-wheel drive.
The engine is a distant relative to the F-series engines found in the mid-1990s Honda Prelude and Accord. The F20C has double overhead cams with roller followers, a VTEC system for both the intake and exhaust camshaft, a ladder-frame main bearing stiffener, molybdenum disulfide-coated piston skirts for reduced friction, Fiber-Reinforced Metal cylinder liners (FRM), and uses a timing chain.
The engine block is built of aluminum with a fiber-reinforced metal sleeve. A timing chain drives an intermediate gear, which drives the camshafts. The pistons are forged aluminum. The intake was designed with minimal volume for fast engine response, and a 14 lb (6.4 kg) flywheel was fitted until 2004. A catalyst is supplied along with an exhaust air-injection system, which greatly decreases cold emissions and catalyst light-off time.
The F20C was built with high engine speed capability in mind and for increased power output, the revolution limit is 9,000 rpm with VTEC engagement at 6,000 rpm. The Japanese model which has a higher compression ratio is capable of 184 kW; 250 PS (247 bhp) at 8,600 rpm. In 2000, 2001, 2002, and 2003, Honda’s F20C engine won a spot on Wards’ 10 Best Engines. The engine displaces 2.0 L (1,997 cc), lending to the Honda S2000’s name.
The F20C produces the highest power output for any naturally aspirated piston engine in a car, at 126.7 PS; 93.2 kW (125 hp) per liter, and produced the torque output of 203–220 N⋅m (150–162 lb⋅ft).
The F20C engine found on the following Honda cars such as 1999-2005 Honda S2000 for Japan market, 2000-2003 Honda S2000 for North America market, 1999–2009 Honda S2000 for United Kingdom, Europe and Australia market and 2009 IFR Aspid.
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