Honda F20C engine

Honda F20C engine
F22C1 engine
Overview
Manufacturer	Honda
Production	2000–2009
Layout
Configuration	Naturally-aspirated Inline-4
Displacement	2.0 L; 121.9 cu in (1,997 cc) (F20C) 2.2 L; 131.6 cu in (2,157 cc) (F22C1)
Cylinder bore	87 mm (3.43 in)
Piston stroke	84 mm (3.31 in) (F20C) 90.7 mm (3.57 in) (F22C1)
Cylinder block material	Aluminum
Cylinder head material	Aluminum
Valvetrain	DOHC 4 valves x cyl. with VTEC
Compression ratio	F20C: 11.7:1 (Japan), 11.0:1 (North America, Europe) F22C1: 11.1:1 (North America, Japan)
RPM range
Max. engine speed	8,800 (F20C), 8,000 (F22C1)
Combustion
Fuel system	Fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled with water-cooled oil filter base plate
Output
Power output	237–247 bhp (177–184 kW; 240–250 PS)
Torque output	150–162 lb⋅ft (203–220 N⋅m)
Dimensions
Dry weight	F20C: Piston 355g; Wrist Pin 109g; Connecting Rod 636g F22C1: Piston 346g; Wrist Pin 109g; Connecting Rod 649g
Chronology
Predecessor	Honda F engine

The F20C and F22C1 were inline-4 engines produced by Honda for use in the Honda S2000. They are one of the few Honda 4-cylinder automobile engines that are designed to sit longitudinally for rear wheel drive.

These engines are a distant relative to the F-series engines found in the mid-1990s Honda Accord and Prelude.^[1] To get most out of the compact-sized engine, Honda engineers utilized technology derived from Honda's racing engines.^[2] The F20C and F22C1 have two overhead cams with roller followers, a ladder-frame main bearing stiffener, a VTEC system for both the intake and exhaust camshaft, Fiber-Reinforced Metal cylinder liners (FRM), Forged aluminum molybdenum disulfide-coated piston skirts for reduced friction, and uses a timing chain.

The VTEC system consists of two separate cam lobe profiles. Variable cam phasing is not used. Roller followers are used to reduce friction in the valvetrain. The rocker arms are constructed using metal injection molding.

The engine block is constructed of aluminum with a fiber-reinforced metal sleeve. A timing chain drives an intermediate gear, which drives the cams. The pistons are forged aluminum. The intake plenum was designed with minimal volume for fast engine response, and a 14 lb (6.4 kg) flywheel was fitted until 2004. A high-flow catalyst is supplied along with an exhaust air-injection system, which greatly decreases catalyst light-off time and cold emissions.