Opel diesel straight-4 2.5 L 4 JA1 99 HP engine DIY maintenance and service manual

General Information

Opel diesel straight-4 2.5 L 4 JA1 99 HP is an 2499 cc (2.2 UK qt.) internal combustion reciprocating Inline 4 engine. It has bore/stroke ratio of 93 mm × 92 mm (3.66 in × 3.62 in). This engine was rated 74 kW (99.24 hp). It was used in Opel cars.

Engine Performance Rating

SAE J1349 (SAE Net)

Opel diesel straight-4 2.5 L 4 JA1 99 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	74 kW (99.24 hp)

Specifications

General

Opel diesel straight-4 2.5 L 4 JA1 99 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Diesel
Cylinder Configuration	Inline 4
Engine Displacement	152.5 in³152.5 in³2499 cc
Bore	3.66 in3.66 in93 mm
Stroke	3.62 in3.62 in92 mm

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Engine head and valvetrain

Opel diesel straight-4 2.5 L 4 JA1 99 HP engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	SOHC
Valves per Cylinder	2

Air Intake

Opel diesel straight-4 2.5 L 4 JA1 99 HP air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated

Fuel Injection

Opel diesel straight-4 2.5 L 4 JA1 99 HP fuel injection specifications.
Parameter	Value
Injection Type	GDI