Subaru EF engine
Encyclopedia
Subaru
; is the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries .Subaru is internationally known for their use of the boxer engine layout popularized in cars by the Volkswagen Beetle and Porsche 911, in most of their vehicles above 1500 cc as well as...
, introduced in 1984 for the Subaru Justy
Subaru Justy
The Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
.
It is a water-cooled straight-3
Straight-3
A straight-three engine, also known as inline-three engine, or a triple, is a reciprocating piston internal combustion engine with three cylinders arranged in a straight line or plane, side by side....
four-stroke engine with a belt-driven single overhead camshaft
Camshaft
A camshaft is a shaft to which a cam is fastened or of which a cam forms an integral part.-History:An early cam was built into Hellenistic water-driven automata from the 3rd century BC. The camshaft was later described in Iraq by Al-Jazari in 1206. He employed it as part of his automata,...
, and a chain-driven balance shaft
Balance shaft
In piston engine engineering, a balance shaft is an eccentric weighted shaft which offsets vibrations in engine designs that are not inherently balanced...
. It has an alloy cylinder head
Cylinder head
In an internal combustion engine, the cylinder head sits above the cylinders on top of the cylinder block. It closes in the top of the cylinder, forming the combustion chamber. This joint is sealed by a head gasket...
and a closed deck iron engine block.
EF10
1.0-litre (997 cc) two valves per cylinder
Power: @5000 rpm/59 lbft @ 3200 rpm with single barrel Hitachi carburetor and 9.5:1 compression ratio
Compression ratio
The 'compression ratio' of an internal-combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its largest capacity to its smallest capacity...
Usage:
- Subaru JustySubaru JustyThe Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
"J10" (limited to some European markets and Asia) - Subaru Libero "E10"
EF12
1.2-litre (1189 cc) three valves per cylinderBore x Stroke: 78 mm (3.1 in) x 83 mm (3.3 in)
Power: @5200 rpm/70 lbft @ 3600 rpm with two barrel Hitachi carburetor
Carburetor
A carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
and 9:1 compression ratio @5600 rpm/71 lbft @ 3600 rpm with multi-port fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
and 9.1:1 compression ratio
Usage:
- Subaru JustySubaru JustyThe Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
"J12" - Subaru Libero "E12"
Power: with multi-point fuel injection
Fuel injection
Fuel injection is a system for admitting fuel into an internal combustion engine. It has become the primary fuel delivery system used in automotive petrol engines, having almost completely replaced carburetors in the late 1980s....
Usage:
- Subaru Tutto (Taiwan)