Nissan A engine

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The Nissan A series of internal combustion gasoline engines were used in Datsun, Nissan and Premier brand vehicles. Displacements of this four-stroke engine family ranged from 1.0 liter to 1.5 liter and were produced from 1967 to the present 2006. It was a small-displacement four cylinder inline engine. It used a lightweight cast iron block and an aluminum cylinder head, with overhead valves actuated by pushrods.

The Nissan A engine design is a refined, quiet and durable gasoline engine. It appears to be a modern replacement of the earlier iron-headed Nissan E engine and is of similar dimensions. The 1960s E series was an all-new design inspired of Nissan's improvements to the BMC A-Series engine design in the 1950s (Nissan was a licensee of Austin Motor Company technology).

1974 and newer A-series engines have different block castings, with relocated motor mount bosses.

Contents

[edit] A10 - The First A-series Engine

The A10 is a 1.0 liter (988 cc) engine first produced in 1967. The A10 featured a three main bearing crankshaft. Bore was 73 mm and stroke was 59 mm as in the Nissan C engine. With a 2-barrel Hitachi carburetor and a 9.0:1 compression ratio it produced 62 hp (46 kW) and 61.5 ft·lbf (83 Nm). Later version (1971-82) of A10 produced 59 hp (SAE).

Applications:

  • 1967-1970 Nissan Sunny B10, B20 (Datsun 1000)
  • 1971-1976 Datsun Cherry E10 also known as 100A

[edit] A12 - Further Refinements

The A12 is a 1.2 liter (1171 cc) engine with 73 mm bore, like the A10 above, but the stroke is increased to 70 mm. With five main bearings on a forged steel crankshaft, the engine is extremely smooth and durable. The 2-barrel Hitachi carburetor was significantly improved with the addition of a power valve circuit. It produced 69 hp (51.45 kW) and 70 ft·lbf (94.9 Nm).

A special version of the A12 called the "A12 GX" engine, was available (A12GX or A12T). With twin Hitachi sidedraft carburetors, a longer duration camshaft and 10:1 compression ratio, the engine accomplished 83 hp, up 20% from standard A12 engines. The GX engine was offered in Japanese Domestic Market Datsun Sunny 1200 GX sedans and Coupes. The identical specification A12T engine was offered in the front-wheel-drive Datsun Cherry X-1. [1]

A bored version of the A12 was used in period race cars, including Nissan factory (works) racing Datsun 1200s and dubbed the A13. These legendary engines competed in Japan's Touring Sedan (TS) class races against the 1200's archrival Toyota Starlet. [2]

Perhaps the most interesting variety of A series engines was the [AY12] engine. This was a special race-only Nissan factory (works) racing version with a Crossflow cylinder head. [3]

Applications:

[edit] A12 - 1974 Redesign

For the 1974 model year, the A engine was modified, and all subsequent A engines use the new block style. Since there was increasing need for accessories like air conditioning, anti-pollution air pumps and the like, the distributor was moved from the front side of the engine to the middle of the block to make room for these accessories. Additionally, the motor mount positions were moved slightly.

This "new" A12 retained the same bore, stroke and most other specifications of the previous A12.

Applications:

  • 1974-1978 Nissan Sunny B210 (Datsun 120Y)(not used in the B-210)
  • 1974-1976 Datsun Cherry E10 (Datsun 120A)
  • 1980-1982 Nissan Sunny B310 (Datsun 120Y)(not used in the 210)

[edit] A13 (1974) - the First Tall-Deck A Engine

The 1974 A13 is a 1.3 liter (1288 cc) engine with 73 mm bore like the A10 and A12 above, but stroke increased to 77 mm, and compression ratio reduced to 8.5:1.

This engine features a "tall-block" with a deck height 15 mm (0.59 inch) higher than previous A-series engines.

Applications:

[edit] A14 - The Engine that Powered Millions

The A14 is a 1.4 liter (1397 cc) engine produced from 1975 through current year as of 2006. The bore was increased to 76 mm, up from 73 mm of previous A-series engines. Like the previous A13 engine, the A14 is a "tall-block" variant. It produced 76 hp

A twin-carburetor "GX" version of this engine (A14T) was available in some markets.

Applications:

  • 1975-1978 Nissan Sunny B210 (120Y or B-210)
  • 1979-1982 Nissan Sunny B310 (Datsun 140Y or "Datsun 210")
  • 1977-1982 Nissan Pulsar N10 ("Datsun 310")
  • 2006 Nissan LDV 1400 (model B140). See Nissan Sunny.
  • Datsun Forklift models (including turbocharged variant)

A fuel injected version (A14E) was offered in Asian markets in the B310.

[edit] A13 (1979-1982) - Short Deck Engine

The redesigned A13 is a 1.3 liter engine. It used the same block casting as the A12 and same stroke of 70 mm, but used a 76 mm bore.

Applications:

[edit] A12A

The A12A is a 1.2 liter (1237 cc) engine. It used a casting similar to the A12 and same stroke, but used a 75 mm bore up from 73 mm, for an increase of 66 cc capacity.

The A12A shared a common block and crankshaft with the redesigned A12 and A13 engines.

Applications:

  • 1980-1982 "Datsun 210" B310 (USA and Canada). See Nissan Sunny.

[edit] A15 - Stroker Motor

The A15 is a 1.5 liter (1488 cc) engine produced from 1979 through 1998. The stroke was increased from the A14 engine. It produces 80 hp. It used a different block casting, but the same "tall-block" deck height as the A14.

A fuel injected version of the A15 (A15E) was offered in Asian markets.

Applications:

[edit] References

  • SP Workshop Manual Series No. 111: Datsun 120Y, Sunny, B210, ISBN 0-85566-177-1.
  • Service Manual Model A10 and A12 Engine, Nissan Motor Co. Ltd, June 1971
  • Datsun Sunny B310 Japan Domestic Market parts catalog, Nissan Motor Co. Ltd, October 1983

[edit] External links

[edit] See also

Part of the Nissan series
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Engines 4 cylinder D | C | G | J | H | L | A | Z | CA | CG | CR | E | FJ | GA | KA | SR | QG | QR | YD | HR | MR | MA
Inline 6 L | H | S20 | P | RB | TB | RD | SD
V6 VG | VE | VQ
V8 Y | VH | VK
See also: Infiniti division Edit this template
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