The Honda F20C is a 1,997 cc, inline‑four naturally aspirated petrol engine produced between 1999 and 2005. It features a dual overhead camshaft (DOHC) 16‑valve layout with Honda's VTEC variable valve timing system. This high-revving configuration, known for its exceptional specific output, enabled a peak power of 240 PS at 8,800 rpm, delivering exhilarating performance.
Fitted primarily to the Honda S2000 (AP1), the F20C was engineered for pure sports car driving dynamics. Emissions compliance for its production era was managed through precise fuel metering and a catalytic converter, meeting Euro 3 standards applicable to vehicles registered from January 2000 onwards.
One documented engineering focus was achieving an 8,800 rpm redline, addressed through specific forged internals and a lightweight valvetrain as detailed in Honda Service Bulletin 00‑012. Later F22C1 variants, introduced in 2004, increased displacement to 2.2L for enhanced low-end torque while retaining the high-revving character.
Honda
Production years 1999–2005 meet Euro 3 standards for vehicles registered from January 2000 (VCA UK Type Approval #VCA/HON/99/05).
The Honda F20C is a 1,997 cc inline‑four naturally aspirated petrol engine engineered for sports cars (1999-2005). It combines DOHC 16-valve architecture with VTEC variable valve timing to deliver exceptional high-RPM power. Designed to meet Euro 3 emissions standards, it prioritizes driver engagement and mechanical precision.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve (VTEC) | |
| Aspiration | Naturally Aspirated | |
| Bore × stroke | 87.0 mm × 84.0 mm | |
| Power output | 240 PS (177 kW) @ 8,800 rpm | |
| Torque | 20.6 kgf·m (202 Nm) @ 7,500 rpm | |
| Fuel system | Honda PGM-FI (Programmed Fuel Injection) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 11.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven DOHC | |
| Oil type | 10W-40 API SL/SM (Full Synthetic) | |
| Dry weight | Not specified in primary sources |
The high-revving VTEC design provides thrilling performance but requires meticulous maintenance. Using the specified full synthetic 10W-40 oil is critical for protecting the high-RPM valvetrain and forged internals. Valve clearance checks are mandatory every 30,000 km to maintain optimal power and prevent valve train noise. The engine is sensitive to ignition timing and requires premium fuel (98 RON) to prevent detonation at high RPM. The timing chain is robust but the tensioner should be inspected during major services.
Oil Specs: Requires 10W-40 full synthetic oil meeting API SL/SM specification (Honda Owner's Manual AP1).
Emissions: Certified to Euro 3 standards for vehicles registered from Jan 2000 (VCA Type Approval #VCA/HON/99/05).
Power Ratings: Measured under JIS D 1001 standards. Output figures are for the Japanese Domestic Market (JDM) variant (Honda Group PT-2003).
Honda Technical Information System (TIS): Workshop Manuals AP1
Honda Electronic Parts Catalogue (EPC): Doc. H-F20C-99
Honda Service Bulletin Database: SB 00-012
Japanese Industrial Standards: JIS D 1001 Engine Power Measurement
The Honda F20C was used exclusively across Honda's AP1 platform with longitudinal mounting and was not licensed to other manufacturers. This engine received minor platform-specific adaptations-primarily in accessory bracket positioning for the S2000-and no major facelift revisions occurred during its production run, ensuring good interchangeability within its model years. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the cylinder block, just below the exhaust manifold (Honda Workshop Manual AP1). The 8th digit of the VIN for AP1 chassis is 'F' for the F-series engine family. The F20C is visually identified by its red valve cover with "VTEC" and "F20C" cast into it and the lack of a balance shaft assembly (distinguishing it from the later F22C1). The intake manifold features individual throttle bodies. Critical differentiator from F22C1: The F20C has a shorter stroke (84.0mm vs 90.7mm) and a different crankshaft, connecting rods, and pistons. Service parts like the cylinder head are generally interchangeable, but bottom-end components are not.
The F20C's primary reliability consideration is maintaining precise valve clearances and using the correct oil, with neglect leading to increased wear and potential valve damage. Honda service data indicates that extended service intervals can accelerate wear on the VTEC solenoid and rocker arms. High-RPM operation and track use amplify stress on the bottom end and valvetrain, making adherence to maintenance schedules critical.
Analysis derived from Honda technical bulletins (1999-2006) and aggregated workshop repair data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA F20C.
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