A20A3

A20A3, A20A4, and BT

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The A20A3, A20A4, and BT were the fuel injected versions of the A20A engines. They were run by Honda's PGM-FI system on a partial OBD-0 computer. Again, there is no real difference between the A20A3 and the A20A4 besides the A20A4 having a slightly higher power output because of not having emissions components (hp and tq numbers for A20A3 only). The A20A3 was offered in the 1984-1987 Honda Prelude 2.0Si, the 1985 and 1989 Honda Accord SE-i, and the 1986-1989 Honda Accord LX-i. The BT was the 1986 and pre-1986 version of the A20A3(86-87).

Specifications

• PGM-FI
• Displacement: 1955 cc/2.0 L
• Bore: 3.26 in.
• Stroke: 3.58 in.
• Compression Ratio: 8:8:1(86-87),9:3:1(88-89)
• Power:
  • 1986-1987
    • 110 hp @ 5500 rpm
    • 114 ft/lb @ 4500 rpm
  • 1988-1989
    • 120 hp @ 5800 rpm
    • 122 ft/lb @ 4000 rpm
• EPA Fuel Economy
  • 25 City/30 Highway (5-speed Manual)
  • 23 City/29 Highway (4-speed Automatic)

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