BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP engine DIY maintenance and service manual

General Information

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP is an 2303 cc (2.03 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 93.4 mm × 84 mm (3.68 in × 3.31 in). This engine was rated 147 kW (197.13 hp). It was used in BMW cars.

Engine Performance Rating

SAE J1349 (SAE Net)

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	147 kW (197.13 hp)

Specifications

General

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Gasoline
Cylinder Configuration	Inline 4
Engine Displacement	140.54 in³140.54 in³2303 cc
Bore	3.68 in3.68 in93.4 mm
Stroke	3.31 in3.31 in84 mm

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Engine head and valvetrain

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	DOHC
Valves per Cylinder	4

Air Intake

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated

Fuel Injection

BMW gasoline straight-4 2.3 L S14 B23 (234S2) 197 HP fuel injection specifications.
Parameter	Value
Injection Type	Carburetor
Injection Info	Intake Manifold Injection/ Carburettor