Honda Gasoline Engine Series Part XV: Inline-Four F-Series

Honda Gasoline Engine Series Part XV: Inline-Four F-Series

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The F-Series: Honda's Unsung Inline-Four Powerhouses

The F-Series inline-four engines debuted on September 13, 1989, and remained in production until the S2000 ceased production in 2009. Spanning 20 years, the F-Series is often overshadowed by its high-performance sibling, the H-Series, except for its final iterations: the F20C and F22C.

A Brief History of the F-Series

1. 1989 Debut: F18A & F20A

   • F18A: 1.8L SOHC, carbureted, 105 hp.
   • F20A: 2.0L SOHC, carbureted, 110 hp; also a DOHC version with 150 hp equipped on the Accord Si (CB3/CB4).
   • Key Models: Fourth-generation Accord (CB1/CB3).

2. The Iconic F22A in the 5th-Generation Accord (CD5)

   • F22A (SOHC, non-VTEC): 140 hp, popular in China as the "Accord 2.2."
   • F22B1 (SOHC VTEC): Higher efficiency and smoother power delivery.

3. High-Performance: F20B

   • Launch Year: 1997
   • Specs: 2.0L DOHC VTEC, 200 hp @ 7,200 rpm.
   • Applications: Euro-spec and JDM Accords (CF4).
   • Derived from the F20A, it featured an H22A-inspired head design and was a key player in high-performance midsize sedans.

4. Peak Evolution: F20C & F22C1

   • Developed for the S2000 sports car with groundbreaking power output.
   • F20C: 2.0L DOHC VTEC, 250 hp @ 8,800 rpm.
   • F22C1: 2.2L DOHC VTEC, 240 hp @ 7,800 rpm but stronger midrange torque.
   • Innovations:
     • Fiber Reinforced Metal (FRM) cylinder construction.
     • Precise valve timing for unmatched efficiency.

F-Series Legacy

The F-Series culminated in 2009 with the F22C1 in the S2000 (AP2). Despite its overshadowed role, it remains a testament to Honda's engineering prowess, bridging the gap between economy and performance engines.

Stay tuned as we shift to Honda’s “2000s era” inline-fours: the K-Series, R-Series, and L-Series.