Honda E07A engine

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For the Honda E series engine used during the 1970s and 1980s, see Honda E engine.
This article incorporates information from the equivalent article on the Japanese Wikipedia.

The E07A is a three-cylinder gasoline engine developed and manufactured by Honda, with a total displacement of 656 cc. The engine is intended for light-vehicle applications. The E05A and E07A were replaced by the Honda P engine.

The E07A is based on the Honda EH Engine, a SOHC 2-cylinder engine. Like the Honda D engine, it rotates anti-clockwise from the timing belt side. The engine was available with either a computer-controlled variable venturi-type side draft carburetor (PGM-CARB) or a multi-point fuel-injected (PGM-FI) version.

Utilizing a cross-flow design, the intake and exhaust valves are opened and closed by the rocker arm driven by a camshaft timing belt. The two intake and two exhaust valves are positioned on either side of the spark plug which is mounted on the top center of the combustion chamber. The cylinder block and cylinder bore are made of die-cast aluminum, as are the valve covers and oil pan. Early Japanese emissions requirements for passenger automobiles required that exhaust gas purification be accomplished by means of a three-way catalyst. The requirement was later amended to include commercial vehicles as well.

E05A (PGM-CARB)

  • SOHC 12 valve CV carburetor
  • Displacement: 547cc
  • Inside diameter × stroke: 62.5 × 59.5
  • Horsepower: 26 kW (35 hp) / 6,500 rpm
  • Torque: 44 N·m (4.5 kg·m) / 5,200 rpm

E05A (PGM-FI)

  • PGM-FI SOHC 12 Valve
  • Displacement: 547cc
  • Bore × Stroke (mm): 62.5 × 59.5
  • Horsepower: 32 kW (43 hp) / 8,000 rpm
  • Torque: 45 N·m (4.6 kg·m) / 4,500 rpm

E07A Basic specifications

  • Water-cooled 3-cylinder
  • Gasoline Fuel
  • 656cc total displacement
  • 2 belt drive mechanism of the intake and exhaust valve SOHC 2
  • Bore × Stroke (mm): 66.0 × 64.0
  • There were three versions of fuel supply systems for this motor: Carburetor (PGM-CARB), fuel injection (PGM-FI) and MTREC (Multi Throttle Responsive Engine Control). The MTREC version of this engine has the highest power output of the various configurations.

Vehicles equipped with E07A

E07A (PGM-CARB)

  • SOHC 12 Valve CV carburetor
  • Displacement: 656cc
  • Bore × Stroke (mm): 66.0 × 64.0
  • Horsepower: 31 kW (42 hp) / 6,000 rpm
  • Torque: 53 N·m (5.4 kg·m) / 5,000 rpm

E07A (PGM-FI)

  • SOHC 12 Valve PGM-FI
  • Displacement: 656cc
  • Bore × Stroke (mm): 66.0 × 64.0
  • Horsepower: 43 kW (58 hp) / 6,300 rpm
  • Torque: 57 N·m (5.8 kg·m) / 5,500 rpm

E07A (MTREC)

In order to extract higher horsepower from a naturally aspirated engine, Honda modified the E07A with a MTREC (Multi Throttle Responsive Engine Control) system, placing individual throttle-bodies on each of the three cylinders.

The system modified the air-fuel ratio of individual cylinders based on RPM to give sharper throttle response while also maintaining a stable idle.

  • E07A (MTREC version)
    • SOHC 12 valve MTREC
    • Displacement: 656cc
  • Bore × Stroke (mm): 66.0 × 64.0
    • Horsepower: 47 kW (63 hp) / 8,100 rpm
    • Torque: 60 N·m (6.1 kg·m) / 7,000 rpm

E07Z

E07Z

    • PGM-FI SOHC 12 Valve
    • Displacement: 656cc
  • Bore × Stroke (mm): 66.0 × 64.0
    • Horsepower: 39 kW (53PS) / 7,000 rpm
    • Torque: 61N m (6.2 kg m) / 4,000 rpm (HM2 Honda Vamos)
  • Honda Acty truck (HA6 / 7)
  • Honda Acty van (HH5 / 6)
  • Honda Vamos / Honda Vamos Hobio (HM1 / 2)
  • Honda Vamos Hobio (commercial grade HJ1 / 2)
  • Honda Life (JB1 / 2)
  • Honda Z (PA1)
  • Honda That's (JD1/2)

E07Z (turbo version)

    • PGM-FI SOHC 12 valve turbo
    • Displacement: 656cc
  • Bore × Stroke (mm): 66.0 × 64.0
    • Horsepower: 47 kW (64PS) / 6,000 rpm
    • Torque: 93N m (9.5 kg m) / 3,700 rpm (HM1 Vamos)
  • Honda Vamos / Vamos Hobio (HM1 / 2)
  • Honda Life Dunk (JB3 / 4)
  • Honda Z (PA1)
  • Honda That's (JD1/2)

S07A (Earth Dreams)

    • PGM-FI DOHC 12 Valve
    • VTC (continuous variable valve timing)
    • Displacement: 656cc
  • Bore × Stroke (mm): 64.0 × 68.2
    • Horsepower: 43 kW (58PS) / 7,300 rpm
    • Torque: 65N m (6.6 kg m) / 3,500 rpm
  • Compression Ratio: 11:2:1
  • Honda N-One Van
  • Honda N Box

S07A Turbo (Earth Dreams)

    • PGM-FI DOHC 12 Valve
    • VTC (continuous variable valve timing)
    • Turbo Charger
    • Displacement: 656cc
  • Bore × Stroke (mm): 64.0 × 68.2
    • Horsepower: 47 kW (64PS) / 6,000 rpm
    • Torque: 104N m (10.6 kg m) / 2,600 rpm
  • Compression Ratio: 11:2:1
  • Honda Beat (2014+)
  • Honda N-One
  • Honda N Box

ECA1

The ECA1 engine was used in the first-generation Honda Insight, as part of the car's Integrated Motor Assist gasoline-electric hybrid drive system. A three-cylinder engine, it displaces 995 cc (0.995 L; 60.7 cu in) and features a SOHC 12-valve head. The engine produces 68 hp (50 kW) @ 5700 rpm and 67 lb·ft (N·m) of torque @ 4800, supplemented in various circumstances by a 10 kW permanent magnet DC electric motor adding 8 horsepower (6.0 kW) and 16 lb·ft (22 N·m) torque throughout the entire rpm range.

  • ECA1
    • 2000-2006 Honda Insight
      • SOHC 12 valve VTEC PGM-FI
      • Displacement: 995cc
      • Inside diameter × stroke: 72.0 × 81.5
      • Horsepower: 67 hp (50 kW) (70PS) / 5,700 rpm
      • Torque: 92N m (9.4 kg m) / 4,800 rpm (ZE1 Honda Insight)

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