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 1781 cc EA82 |
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| Manufacturer | Subaru |
|---|---|
| Production | 1966–1994 |
| Successor | Subaru EJ engine |
| Valvetrain | OHV/SOHC |
| Fuel type | Petrol/gasoline |
The Subaru EA engine is a series of automobile internal combustion engines manufactured by Subaru, a division of Fuji Heavy Industries. All EA series engines are of a flat-4 design.
The EA series engines have aluminum heads with aluminum blocks. Each cylinder has two valves, one for exhaust and one for intake. They came in either an OHV pushrod or SOHC configuration.
Subaru produced the EA series from 1966 to 1994, and were found in the Subaru FF-1 and the Subaru Leone.
Contents |
EA-52
The Subaru EA-52 engine was produced from 1966-1970, and from 1970-1971 in the United States.
Specifications
- Displacement: 977.2 cm³
- Bore: 72 mm
- Stroke: 60 mm
- Compression Ratio: 9.0:1
- Valvetrain: OHV Pushrod
- Horsepower: 55 bhp (41 kW; 56 PS) @ 6000 RPM
- Torque: 57 lb·ft (77 N·m) @ 3200 RPM
Found on
EA-53
The Subaru EA-53 was used in the 1967 Subaru 1000 Sports Sedan, sold in Japan. It used twin carburetors. This engine was used in the September 1968 Japan Alpine Rally which the car won in the 1000cc engine class.
Specifications
- Displacement: 977.2 cm³
- Bore: 72 mm
- Stroke: 60 mm
- Compression Ratio: 10:1
- Valvetrain: OHV Pushrod
- Horsepower: 67 PS (49 kW; 66 bhp) @ 6600 RPM
- Torque: 8.2 kg·m (80 N·m; 59 lb·ft) @ 4600 RPM
EA-61
The Subaru EA-61 engine was produced from 1969 to 1972. The Japanese-spec Subaru FF-1 Sport Sedan and the FF-1 Super Touring sedan used twin carburetors, with the engine designation EA-61S.
Specifications
- Displacement: 1088 cm³
- Bore: 76 mm
- Stroke: 60 mm
- Compression Ratio: 8.5:1
- Valvetrain: OHV Pushrod
- Horsepower: 61 bhp (45 kW; 62 PS) @ 5600 RPM
- Torque: 65 lb·ft (88 N·m) @ 4000 RPM
Found on
EA-62
The Subaru EA-62 engine was produced from 1971 to 1972. It is the only EA- engine with rear facing exhaust ports.
Specifications
- Displacement: 1267.5 cm³
- Bore: 82 mm
- Stroke: 60 mm
- Compression Ratio: 9.0:1
- Valvetrain: OHV Pushrod
- Horsepower: 80 bhp (60 kW; 81 PS) @ 6400 RPM
- Torque: 73 lb·ft (99 N·m) @ 4000 RPM
Found on
- Subaru G (1300G in United States)
EA-62S
This engine used twin carburetors from Zenith Romberg
- Displacement: 1267.5 cm³
- Bore: 82 mm
- Stroke: 60 mm
- Compression Ratio: 10.0:1
- Valvetrain: OHV Pushrod
- Horsepower: 93 PS (68 kW; 92 bhp) @ 7000 RPM
- Torque: 10.5 kg·m (103 N·m; 76 lb·ft) @ 5000 RPM
Found on
- Subaru FF-1 1300G Sports Sedan and Super Touring (Japan)
EA-63
The Subaru EA-63 engine was produced from 1973 to 1976.
Specifications
- Displacement: 1361 cm³
- Bore: 85 mm
- Stroke: 60 mm
- Compression Ratio: 8.5:1
- Valvetrain: OHV Pushrod
- Horsepower: 58 bhp (43 kW; 59 PS) @ 5200 RPM
- Torque: 68 lb·ft (92 N·m) @ 2400 RPM
Found on
- 1974-1976 Subaru Leone
EA-71
The Subaru EA-71 engine was produced from 1976 to 1987, and was a redesign of the EA-63 block.
Specifications
- Displacement: 1595 cm³
- Bore: 92 mm
- Stroke: 60 mm
- Compression Ratio: 9.0:1
- Valvetrain: OHV Pushrod
- Horsepower:
1976-1979: 67 bhp (50 kW; 68 PS) @ 5200 RPM
1980-1987: 68 bhp (51 kW; 69 PS) @ 4800 RPM - Torque:
1976-1979: 81 lb·ft (110 N·m) @ 2400 RPM
1980-1987:84 lb·ft (114 N·m) @ 2800 RPM
Found on
- 1976-1987 Subaru Leone
- 1978-1980 Subaru BRAT
EA-72 Concept Engine
There was an unreleased EA-72 concept engine Subaru developed for use in the Japanese Market in 1989. It was essentially an EA-82 with an EA-71 crankshaft. This engine never came about as the Subaru EJ15 and EJ16 were already in development for this purpose.
Specifications
- Displacement: 1595 cm³
- Bore: 92 mm
- Stroke: 60 mm
- Compression Ratio: 8.7:1
- Valvetrain: SOHC
- Horsepower: unreleased
- Torque: unreleased
EA-81
The Subaru EA-81 engine was produced from 1980 to 1989 and is a stroked version of the EA-71.
Specifications
- Displacement: 1781 cm³
- Bore: 92 mm
- Stroke: 67 mm
- Compression Ratio: 8.7:1
- Valvetrain: OHV Pushrod
- Horsepower: 73 bhp (54 kW; 74 PS) @ 4800 RPM
- Torque: 94 lb·ft (127 N·m) @ 2400 RPM
Found On
- 1980-1989 Subaru Leone
- 1981-1987 Subaru BRAT
EA-81T
The EA-81T is not an official engine designation from Subaru. The T is used informally to refer to the turbo-supercharger configuration of EA-81 engines that are equipped with a turbocharger and multi port fuel injection.
Additional Specifications
- Compression Ratio: 7.7:1
- Supercharging Pressure: 7 psi
- Valvetrain: OHV Pushrod
- Horsepower: 95 bhp (71 kW; 96 PS) @ 4200 RPM
- Torque: 123 lb·ft (167 N·m) @ 2800 RPM
Found on
- 1983-1984 Subaru Leone
- 1983-1984 Subaru BRAT
EA-82
The Subaru EA-82 engine was produced from 1985 to 1994. It came with a carburetor, single point fuel injection, or multi port fuel injection. Most of the technical advancements introduced to the EA82 were utilized in the Subaru EJ engine, specifically, the SOHC valvetrain, and multi-point fuel injection.
Specifications
- Displacement: 1781 cm³
- Bore: 92 mm
- Stroke: 67 mm
- Compression Ratio: 8.7:1 or 9.0:1 SPFI According to Subaru Factory Service manuals: 9.0:1 "carb" 9.5:1 SPFI
- Valvetrain: SOHC
- Horsepower:
Carb - 84 bhp (63 kW; 85 PS) @ 5200 RPM,
SPFI - 90 bhp (67 kW; 91 PS) @ 5600 RPM
MPFI - 97 bhp (72 kW; 98 PS) @ 5200 RPM - Torque:
Carb - 101 lb·ft (137 N·m) @ 3200 RPM
SPFI - 101 lb·ft (137 N·m) @ 3200 RPM
MPFI - 103 lb·ft (140 N·m) @ 3200 RPM
Found On
- 1985-1994 Subaru Leone
- 1985-1991 Subaru Alcyone
EA-82T
The EA-82T engine was introduced in 1985 for the GL-10 models, and later on RX Coupe models. It is an MPFI EA-82 with modified cylinder heads and lower compression pistons.
Additional Specifications
- Turbo: IHI Corporation model RHB5 VF7
- Compression Ratio: 7.7:1
- Supercharging Pressure: 7 psi
- Horsepower:
111 bhp (83 kW; 113 PS) @ 5200 RPM (1985-1986)
115 bhp (86 kW; 117 PS) @ 5200 RPM (1987-1990) - Torque: 134 lb·ft (182 N·m) @ 2800 RPM
ER-27
The ER-27 engine was produced from 1988-1991. It is technically not an EA engine, although it is a 6 cylinder version of the EA-82. The ER-27 is essentially is 1 and a half EA82's. The split the case of a second EA82 and welded the cases together. Many parts will interchange. There was never a factory turbo version of this engine. The ER27 designation was the first time Subaru incorporated the engines displacement into the series name.
Specifications
- Displacement: 2672 cm³
- Bore: 92 mm
- Stroke: 67 mm
- Compression Ratio: 9.5:1
- Valvetrain: SOHC
- Horsepower: 145 bhp (108 kW; 147 PS) @ 5200 RPM
- Torque: 156 lb·ft (212 N·m) @ 4000 RPM
Found on
- 1988-1991 Subaru Alcyone (XT-6 in the United States/Alcyone VX in Australia).
References
- 1977 Subaru Factory Service Manual
- 1983 Subaru Factory Service Manual
- 1984 Subaru Factory Service Manual
- 1987/1988 Subaru Factory Service Manual
- Subaru Drive Magazine
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