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Engine B12S1
Engine B12S1
Engine B12S1
Engine B12S1
Engine B12S1
Engine B12S1
  1. Engine B12S1
  2. Engine B12S1
  3. Engine B12S1
  4. Engine B12S1
  5. Engine B12S1
  6. Engine B12S1

B12S1 engine for GM (Daewoo/Chevrolet) 1.2 L

The B12S1 is a 1.2-liter, naturally aspirated gasoline engine developed by the S-TEC division of General Motors (Daewoo/Chevrolet). It features an inline four-cylinder configuration and is equipped with a simple 8-valve, single overhead camshaft (SOHC) valvetrain.

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Description

Engine Code: B12S1 (also known as LY4)
Displacement: 1,150 cc (1.2L)
Configuration: Inline-four (R4)
Valvetrain: Single Overhead Camshaft (SOHC), 8 valves (2 valves per cylinder)
Aspiration: Naturally aspirated
Fuel System: Multi-Point Injection (MPI)
Fuel Type: Gasoline (some versions support LPG/autogas)
Bore: 68.5 mm
Stroke: 78.0 mm
Compression Ratio: 9.3:1

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