The F20C and F22C1 are two engines from Honda’s S2000 series that share a lot in common but have some notable differences, mainly in displacement, power characteristics, and tuning. Here’s a breakdown of their main distinctions:
1. Displacement and Bore/Stroke:
– F20C:
- 2.0 liters (1997 cc)
- Bore x Stroke: 87 mm x 84 mm (oversquare design)
– F22C1:
- 2.2 liters (2157 cc)
- Bore x Stroke: 87 mm x 90.7 mm (longer stroke for increased displacement)
The F22C1 has a longer stroke, which increases displacement to provide more torque at lower RPMs.
2. Power and Torque Output: s2k engine
– F20C:
- Power: Approximately 240 hp at 8300 rpm
- Torque: Around 153 lb-ft at 7500 rpm
- Redline: 9000 rpm
– F22C1:
- Power: Approximately 237 hp at 7800 rpm (marginally lower peak power)
- Torque: Around 162 lb-ft at 6500 rpm
- Redline: 8000 rpm
The F20C has a higher redline, making it more high-revving, while the F22C1 is tuned for better low-end torque, making it slightly more user-friendly for daily driving.
3. Powerband Characteristics:
– F20C:
- This engine is designed with high RPM in mind, the F20C’s powerband is narrower and peaks at a higher RPM, ideal for track performance.
– F22C1:
- With more torque available at lower RPMs, the F22C1 provides a more accessible powerband, which improves drivability in everyday situations.
4. Markets and Availability: F20c Vs F22c1
– F20C:
- Primarily sold in markets outside of the U.S., like Japan and other countries that received the initial Honda S2000 (AP1).
– F22C1:
- You found this engine in U.S. and North American S2000s from 2004 onwards (AP2 model).
5. Driving Feel:
F20C:
- It feels like a pure track-focused engine, requiring higher RPMs to get the most performance, which some enthusiasts love for spirited driving.
F22C1:
- It feels more refined and suited for street driving with increased torque, but still delivers the iconic high-revving experience that defines the S2000.
In summary, the F20C is more of a high-revving powerhouse, ideal for track-focused enthusiasts, while the F22C1 is more balanced for daily driving with added torque at lower RPMs. Both engines, however, maintain the Honda S2000’s reputation for precision engineering and thrilling performance.
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