BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m engine DIY maintenance and service manual

General Information

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m is an 2467 cc (2.17 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 95 mm × 87 mm (3.74 in × 3.43 in). This engine was rated 175 kW (234.68 hp) and 240 N⋅m (177.01 lbf⋅ft) of torque. It was used in BMW cars.

Engine Performance Rating

SAE J1349 (SAE Net)

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	175 kW (234.68 hp)
Torque Rating	177.01 lbf⋅ft177.01 lbf⋅ft240 N⋅m

Specifications

General

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Gasoline
Cylinder Configuration	Inline 4
Engine Displacement	150.55 in³150.55 in³2467 cc
Bore	3.74 in3.74 in95 mm
Stroke	3.43 in3.43 in87 mm

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Engine head and valvetrain

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	DOHC
Valves per Cylinder	4

Air Intake

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated

Fuel Injection

BMW gasoline straight-4 2.5 L S14 B25 (254S1) 235 HP, 240 N⋅m fuel injection specifications.
Parameter	Value
Injection Type	Carburetor
Injection Info	Intake Manifold Injection/ Carburettor