Description
The 1kz engine is a 4-cylinder, 3.0 L (2,982 cc), SOHC, indirect-injection, turbodiesel engine with two valves per cylinder. 96 mm x 103 mm (3.78 in 4.06 in) for the bore and stroke, and 21.2:1 for the compression ratio. The maximum torque is 287 Nm at 2000 rpm and the highest output is 130 PS (96 kW; 128 horsepower) at 3600 rpm (212 lbft; 212 ft). 4400 rpm is the redline. It was first installed in the 70-series Prado in May 1993, and subsequently in the Hiace and Hilux Surf in August of the same year, replacing the 2.4 2LTE engine in Toyota’s Light Duty Commercial Vehicles in Japan.
The ETCS-i (Electronic Throttle Control System – Intelligent) electronically controlled fuel injection system, which has a basic structure resembling a contemporary gasoline injector, is also used by the 1kz engine. However, because it uses indirect injection and significantly higher injection pressures, it is less efficient and uses more gasoline. The 1KD-FTV engine with common rail direct injection has become well-established in most places.
The 1kz engine was used:
KZJ90, KZJ95, KZJ120L, and KZJ120R Land Cruiser Prado
[2] KZJ71W, KZJ73W, and KZJ78W are Land Cruiser Prado models.
Toyota HiAce Granvia Hilux Surf KZN130, KZN185 Hilux KZN165
The 1KZ engine was developed and placed into widespread production in 1993. It has been regarded as the diesel engine’s most successful design up to this point. In a short period of time, this Toyota engine was able to quickly replace 2L-TE diesel engines on the market.
Diesel engine 1kz engine is a 4-cylinder engine with mechanical injection and water cooling. An electronic injection pump is included with the 1KZ-TE turbodiesel engine. Numerous data from the on-board sensors are employed in this situation. Although 1KZ may appear challenging, a professional may easily repair it. In a workshop, replacing the crankshaft or any attachment is simple.
Frequent problems
The most important issues with the cylinder head for the 1kz engine. Since temperature circumstances rather than the head itself can result in such issues, it is important to keep an eye on the cooling system and the sensors’ signs.
Additionally, it is important to keep in mind that:
The timing belt’s lifespan typically does not exceed 100,000 km; coolant loves to disappear, which can cause overheating; thermal clearances of the valves must be adjusted every 40 000 km; and in the event of a break, the valves flex.
The cylinder block is made of high-strength cast iron and has a monoblock, five-bearing support system. In order to improve piston ring sealing, the cylinder bores underwent plateau hone. A well-balanced steel crankshaft with five main journals and aluminum alloy bearings is included with the 1KZ engine.
A connecting rod’s internal oil route passes through each piston’s oil gallery to supply it with oil. The lightweight carbon steel connecting rods are constructed of. The top ring groove on the pistons is made of FRM (fiber reinforced metal), which increases wear resistance. The pistons are made of an aluminum alloy. Two compression rings and one oil control ring are installed on each piston. The piston stroke is 103.0 mm (4.06 in), the cylinder bore is 96.0 mm (3.78 in), and the compression ratio
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