Honda Gasoline Engine Series Part XIII: The Inline-Four D-Series Engines

Honda Gasoline Engine Series Part XIII: The Inline-Four D-Series Engines
Original | Honda Enthusiasts Journal | Updated: 2024-11-15, 11:00:00

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🚗 The D-Series: Honda's Reliable Inline-Four Powerhouses

In the 1980s, Honda's D-Series engines were positioned as the "low-end" counterparts in the sub-2.0L inline-four engine lineup, complementing the more performance-focused B-Series engines. 💡 Introduced in October 1986, the D-Series debuted with the 1.2L D12A engine, initially powering the second-generation City (GA1). These engines served Honda models until 2006, when the mid-cycle Edix (BE1) replaced them with the R18A engine, marking the end of the D-Series’ 20-year legacy.

🔍 Highlights of the D-Series Family

The D-Series lineup is vast, featuring:

• 🛠️ Configurations: Three-valve carburetor CVCC, SOHC four-valve, SOHC VTEC, and VTEC-E.
• 🛢️ Fuel Delivery Systems: Carburetor, single-point injection, and multi-point injection.
• 📐 Displacement Variants: 1.2L, 1.3L, 1.4L, two 1.5Ls, 1.6L, and 1.7L.

Let’s delve into some notable members of this diverse lineup. 🚀

🛠️ The D12A: The Beginning

The D12A debuted in the second-generation City (GA1) in 1986, with the following specifications:

• Displacement: 1,237cc
• Valvetrain: SOHC 16V
• Output: 76 hp @ 6,500 rpm, 10 kgm torque @ 4,000 rpm
• Vehicle Weight: 700 kg, with a power-to-weight ratio surpassing the first-generation Fit 1.3 i-DSI. 🚗💨

🔄 From EV to D-Series: Evolution in Design

The D-Series evolved from Honda’s Ex-series engines. For instance:

• EV → D13A
• EW → D15A

D15A Specifications:

• Displacement: 1,488cc (D15A) / 1,493cc (D15B)
• Output: Up to 105 hp for domestic models.
  💡 These engines powered icons like the Civic, CRX, Integra, Logo, and Stream, among others.

⚡ SOHC VTEC Makes its Debut

In 1992, Honda introduced the D15B VTEC, a simplified SOHC version of its iconic VTEC system. 💡 This system controlled intake camshaft rockers, delivering:

• Displacement: 1,493cc
• Output: 130 hp, 139 Nm torque
• Key Technology: Three-stage VTEC, varying valve lift and duration across three cam profiles.
  The D15B powered models like the Civic EG4 and EK3 until 2001. 🏁

🔧 The Final D-Series: D17A

The last D-Series engine, D17A, debuted with the 7th-generation Civic (ES3) in 2001.

• Displacement: 1,668cc
• Valvetrain: SOHC VTEC
• Output: 130 hp @ 6,300 rpm, 15.8 kgm torque @ 4,800 rpm.

💡 The D17A’s final application was the Honda Edix (BE1), whose European export variant, the FR-V, featured a unique 3+3 seating layout. 🪑

🌟 The End of an Era

In November 2006, the D-Series bowed out, succeeded by the R18A. This transition marked Honda’s move into a new era dominated by L-Series, R-Series, and K-Series inline-fours. 💪

Stay tuned for the next chapter: the L-Series, Honda's modern marvel! 🛠️✨

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🚗💨 Honda D-Series Engines: A 20-Year Legacy!
🎉 Spanning from 1986 to 2006, the D-Series powered icons like the Civic, CRX, and Stream!
💡 Did you know the D15B VTEC was the first SOHC VTEC engine, boasting 130 hp?
✨ Share your favorite D-Series memories in the comments below!