History
Honda EA type engine
The Honda EA engine is a 4-cycle in-line 2-cylinder gasoline engine for light vehicles manufactured by Honda Motor Co. Ltd in the 1970s.
History
The EA engine appeared as the successor to the N360's air-cooled 354 cc (21.6 cu in) in-line 2-cylinder N360E/LN360E engine.
This SOHC design has one intake/exhaust valve and is driven by a timing belt, making it the first engine in Japan to use a timing belt. It combines two balancer shafts driven by a chain to cancel the primary vibrations of the engine .Heat-resistant material is used for the valve seat in order to reduce the lead content of gasoline on the market for kei car legislation .It was first used in the Life, which was announced in May 1971.
The more powefull twin carburetor specification of 2 Keihin CV horizontal carburettors was adopted for the first time in the additional variation of Life SS and Custom announced in September 1972 with higher compression ratio of 9.0 also the Z TS and GT models.
Production of the EA engine ended in 1974 with the end of production of the Life Step Van with much large EB version used in the new Civic from the time .
EA engine variations
Single carburetor specification
- Valve mechanism: SOHC belt drive intake 1 exhaust 1
- Displacement: 356cc
- Inner Diameter x Stroke: 67.0mm x 50.6mm
- Fuel supply device type: carburetor
- Reference specs (SA Life)
- Max power (DIN): 30 hp at 8,000 rpm
- Max torque (DIN): 21 1b ft, 2.9 kg m at 6,000 rpm
- Max engine rpm: 8,500
- Power-weight ratio: 35.6 lb/hp, 16.1 kg/hp
- Maximum output: 23 kW (31 PS) / 8,500 rpm
- Maximum torque: 29 N m (3.0 kgf m) / 6,500 rpm
- Compression ratio: 8.8:1
Dual carburetor specification
- Valve mechanism: SOHC belt drive intake 1 exhaust 1
- Displacement: 356cc
- Inner Diameter x Stroke: 67.0mm x 50.6mm
- Fuel supply system type: carburetor ( CV dual carburetor )
- Max power (DIN): 36 hp at 9.000 rpm
- Max torque (DIN): 23 1b ft, 3.2 kg m at 7,000 rpm
- Max engine rpm: 10,000
- Compression ratio: 9.0
EA engine Installed vehicles
Single carburetor specification
- Honda Life (SA/WA)
- Honda Z (SA)
- Honda Life Step Van (VA)
- Honda Life Pickup (PA)
Dual carburetor specification
- Honda Life (SA) SS and Custom models
- Honda Z (SA) TS and GT models
Technical
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Honda EA engine Technical details and specifications (1971-1974)
Single carburetor specification
Engine location front, transverse
4 stroke
2 cylinders, in line
21.7 cu in, 356 cc (2.64 x 1.99 in, 67 x 50.6 mm)
compression ratio: 8.8:1
light alloy cylinder block with cast iron liners
light alloy head
3 crankshaft bearings
valves: overhead, rockers
camshafts: 1, overhead
lubrication: eccentric pump, full flow filter
1 Keihin downdraught twin barrel carburettor
fuel feed: electric pump
water-cooled
12 V
26 Ah battery
30 A alternator
Nihon Denso distributorDual carburetor specification
Location front transverse
4 stroke
2 cylinders. in line
21.7 cu in, 356 cc (2.64 x 1.99 in. 67 x 50.6 mm)
compression ratio: 9: 1
light alloy cylinder block with cast iron liners
light alloy head
3 crankshaft bearings
valves: overhead, rockers
camshafts: 1. overhead
lubrication: eccentric pump
full flow filter
2 Keihin CV horizontal carburettors
fuel feed: electric pump
water-cooled. 5.3 imp pt. 6.3 US pt
12 V
35 Ah battery
30 A alternator
Nihon Denso distributor© Motor car History
Service
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Honda EA engine Maintenance and Service Guide (1971-1974)
Fuel: 85-90 oct petrol
Engine oil change: 5.3 imp pt, 6.3 US pt. 3 1, SAE 10W-30. change every 3,100 miles, 5,000 km
Water 5.3 imp pt, 6.3 US pt, 3 1.
Gearbox and final drive oil: 3.5 imp pt, 4.2 US pt. 2 1, SAE 10W-30, change every 25.000 miles, 40,000 km
Tappet clearances: inlet 0.003 in. 0.08 mm. exhaust 0.003 in, 0.08 mm
Valve timing: 0° 30° 40° 0°© Motor car History
Maintenance
Maintenance Advanced Data
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