Honda A engine
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[edit] History
The Honda A-series engines succeeded the earlier EZ, ES, BS and ET engines in the Honda Accord and Prelude. Some of those engines were actually early A-series engines and parts between them may be cross-compatible. There were several variations, ranging from the 1.6 liter A16A to the 2.0 liter A20A. All A-series engines have iron blocks with single overhead camshaft aluminum heads and are the last iron blocked engine produced by Honda. They came in both carbed and fuel injected configurations.
[edit] Technology & Advancement
Although they don't have VTEC, the A-series engines were well-designed engines. Analysis of the head construction has showed that Honda was using valve geometry and technology several years ahead of their time. Also, the later model of the A20A3 & A20A4 benefitted from the addition of a dual-stage runner intake manifold design, 4-2-1 headers, and a more electronic form of the vacuum advanced distributor. The Programmed fuel injection engines were equipped with partial OBD-0 engine computers.
[edit] Aftermarket
The aftermarket for the Accord and Prelude A series engine has died out. Below is a list of some previous backers.
- GUDE: Head package, Header, Cam Grind
- DC SPORTS: Stainless Cat-back, 4-2-1 Header
- PAECO: Full Engine Build, Header
- S&S: 4-1 Header
- PACESETTER: 4-2-1 Header
- HOTBITS: 4-2-1 Header
- LIGHTSPEED: 4-2-1 Header
- MOSSELMAN: Log Turbo Manifold
Most upgrades and modifications to the A-series engines are of the DIY variety, with one of the more popular being a turbo set-up. Because of their closed-deck iron block design, they're especially well-suited for handling boost. A VTEC version of the A-series engine was never produced, so swaps akin to an LS/VTEC or "mini-me" aren't doable because no VTEC head bolts to the A-series block. However there have been attempts to bolt DOHC heads to the A-Series which are not at all as easy as bolt and go. The holes are not perfectly aligned, nor do the cam and crank sprockets have the correct diameters.
[edit] A-Series Engines
[edit] A16A1
The A16A1 was a carburated 1.6 liter engine used in 1986-1989 Accords in the non-USDM market. This engine was known as the EZ in 1984 and 1985, non-US Accords.
Specifications
- Carbeurated
- Displacement: 1596 cm³
- Bore: 80 mm (3.1 in)
- Stroke: 79.5 mm (3.13 in)
- Power:
- 88 hp (66 kW) @ 6000 rpm
- 91 ft·lbf (123 N·m) torque @ 3500 rpm
[edit] A18A
The A18A engine was the 1.8 liter engine found in 1984-1987 Honda Prelude in the US. Abroad, it was also available in the 1986-1989 Accords. It was known as the ET1 in the 1984 and 1985 non-US Accords.
Specifications
- Carbeurated
- Displacement: 1829 cm³
- Bore: 80 mm (3.1 in)
- Stroke: 91 mm (3.6 in)
- Power:
- 110 hp (82 kW) @ 5800 rpm
- 112 ft·lbf (152 N·m) @ 3500 rpm
[edit] A20A
The A20A is probably the most plentiful of all the Honda A-series engines. It was available in both carbureted and PGM-FI versions. They were found in both Accords and Preludes throughout the 1980s.
[edit] A20A1 & A20A2
The A20A1 and A20A2 were the carbureted versions of the A20A engines. It was available in the 1984-1987 Honda Preludes as well as the 1982-1989 Accord DX and LX. They are the same engine, the only difference between them being that the A20A2 has no emissions components, so it has a slightly higher power output (hp and tq numbers for A20A1 only).
Specifications
- Exhaust: 4-1 Cast Manifold
- Induction: Carbureted 2bbl Keihin ( Feedback Carb )
- Displacement: 1955 cc / 119 CID
- Bore: 82.7 mm (3.26 in)
- Stroke: 91 mm (3.6 in)
- Power:
- 98 hp (73 kW)
- 109 ft·lbf (148 N·m) at 3500 rpm
[edit] A20A3 & A20A4
The A20A3 and A20A4 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 1989 Honda Accord SE-i, and the 1986-1989 Honda Accord LX-i.
Specifications
- PGM-FI
- Displacement: 1955 cm³
- Bore:82.7 mm (3.26 in)
- Stroke:91 mm (3.6 in)
- Power:
- 1986-1987: 110 hp (82 kW) @ 5500 rpm & 114 ft·lbf (155 N·m) @ 4500 rpm
- 1988-1989: 120 hp (89 kW) @ 5500 rpm & 122 ft·lbf (165 N·m) @ 4000 rpm (12 valve)
