A12A

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A12A engine (1237cc) was used 1978-1982. It has a 75mm bore, larger than an A12 (1171cc) engine with 73mm bore. The A13 Engine has a 76mm bore. The block is virtually identical to the original 1974 A12. The A12A is a 1237cc engine. It used a casting similar to the A12 and same stroke, but machined with 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.

Identification

A12A ID Mark

Chassis Plate

Applications

B310
* 1979 'Datsun Sunny 210' B310 Canada
* 1980-1982 'Datsun 210' B310 USA and Canada 
* 1977-1980 Datsun Sunny B310 Japan and Asia markets S,K only
  (replaced by the new A13 for 1981/1982)
  Wagon used A12, not A12A

H65 = A12
H85 = A12A
H86 = A13

Specifications

• 58 HP
• 1237 cc (original A12 was 1171 cc)
• 75 mm bore (2mm larger than A12)
• 70 mm stroke (same as A12)

Part Numbers

CYLINDER BLOCK ASSY
11010-H9960 A12A USA 0879-
11010-H8500 A12A CAN 1278-0779
11010-H8502 A12A CAN ^11010-H8500
11010-H9001 A12A CAN 0879- °11010-H8502

Connecting Rods
12100-H8500 A12/A12A/A13S CONNECTING ROD
* for use with 19 mm piston pin (same as A14)

Photo Index

Nissan A Engines: Overview | A10 | A12 | A12A | A13, old | A13, new | A14 | A15