Toyota diesel straight-6 4.2 L 1H-Z 129 HP engine DIY maintenance and service manual

General Information

Toyota diesel straight-6 4.2 L 1H-Z 129 HP is an 4164 cc (3.66 UK qt.) internal combustion reciprocating Inline 6 engine. It has bore/stroke ratio of 94 mm × 100 mm (3.7 in × 3.94 in). This engine was rated 96 kW (128.74 hp). It was used in Toyota cars.

Engine Performance Rating

SAE J1349 (SAE Net)

Toyota diesel straight-6 4.2 L 1H-Z 129 HP engine performance rating according to SAE J1349 (SAE Net) standard.
Parameter	Output
Power Rating	96 kW (128.74 hp)

Specifications

General

Toyota diesel straight-6 4.2 L 1H-Z 129 HP engine general specifications.
Parameter	Value
Type	Internal Combustion Reciprocating
Fuel Type	Diesel
Cylinder Configuration	Inline 6
Engine Displacement	254.1 in³254.1 in³4164 cc
Bore	3.7 in3.7 in94 mm
Stroke	3.94 in3.94 in100 mm

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Engine head and valvetrain

Toyota diesel straight-6 4.2 L 1H-Z 129 HP engine head and valvetrain specifications.
Parameter	Value
Valvetrain Type	SOHC
Valves per Cylinder	2

Air Intake

Toyota diesel straight-6 4.2 L 1H-Z 129 HP air intake specifications.
Parameter	Value
Air Intake Method	Naturally Aspirated

Fuel Injection

Toyota diesel straight-6 4.2 L 1H-Z 129 HP fuel injection specifications.
Parameter	Value
Injection Type	Prechamber