Jeep gasoline straight-6 4.0 L ERH 188 HP engine DIY maintenance and service manual

General Information

Jeep gasoline straight-6 4.0 L ERH 188 HP is an 3964 cc (3.49 UK qt.) internal combustion reciprocating Inline 6 engine. It has bore/stroke ratio of 98.5 mm × 86.7 mm (3.88 in × 3.41 in). This engine was rated 140 kW (187.74 hp). It was used in Jeep cars.

Engine Performance Rating

SAE J1349 (SAE Net)

Jeep gasoline straight-6 4.0 L ERH 188 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	140 kW (187.74 hp)

Specifications

General

Jeep gasoline straight-6 4.0 L ERH 188 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Gasoline
Cylinder Configuration	Inline 6
Engine Displacement	241.9 in³241.9 in³3964 cc
Bore	3.88 in3.88 in98.5 mm
Stroke	3.41 in3.41 in86.7 mm

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Engine head and valvetrain

Jeep gasoline straight-6 4.0 L ERH 188 HP engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	OHV
Valves per Cylinder	2

Air Intake

Jeep gasoline straight-6 4.0 L ERH 188 HP air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated