Engine 1SZ-FE
Content
If we talk about the history of the creation of Toyota engines, then, undoubtedly, it is worth noting that their history is very rich. For example, if we consider the 1SZ-FE engine, then it should be noted that this model is very different from all previous ones.
This is due to the fact that the Toyota concern bought out most of the shares of the Daihatsu company, which was currently developing the K3-VE engine. It was on its basis that they began to develop the 1SZ-FE model. The first power units had a cast-iron block in their structure, and their main difference from other models was the presence of aluminum cooling of thin laser-cut seats. It is worth noting that the repair of the components of the motor is impossible without special equipment and skillful hands of the master. But let's not get ahead of ourselves, and talk about the progression of this engine model.
What was the 1SZ-FE engine like first
The first models that were suitable for installation on modern cars began to be produced by the middle of 99. These were liter engines. After the modernization of the engine, new models appeared on the market, on which a new generation unit with a volume of 1,3 liters was already installed. After appeared 1,5 liters. motors.
Features 1SZ-FE
A feature of this engine is that the toyota 1SZ-FE is the only model where the drive is due to the plastic Morse chain (this can be observed today in modern cars based on which a CVT motor is installed).
Pluses 1SZ-FE
- Quiet work.
- The ability to transmit huge torque, which in turn leaves the possibility of this chain driving the oil pump and single VVTi in action. To be clear, VVTi is a system that regulates the interaction time between the engine and the intake camshaft. In turn, this leads to greater efficiency of the car, which proves the great importance of torque. This technology was first developed by Toyota automotive engineers in 1996.
Disadvantages of 1SZ-FE
- Due to the length of the chain, it was necessary to install additional acceleration blocks, as well as an additional shoe with a hydraulic tensioner. All this increased oil consumption (which is poured from expensive brands), and also generally increased the cost of this motor and car.
- There is a high probability of bending the valves at the moment of tension and loosening of the tensioner. After that, the timing chain needs to be replaced and the engine overhauled.
- The oil pump is designed and developed without the use of a sump, which during the start-up process increases the time for a complete revolution of the oil in the system.
- Although the 1SZ-FE is considered the most successful engine developed by Toyota, it has the biggest and most significant drawback. In this model of the engine, the valves work due to the influence of a system of pushers on them, which makes the process of adjusting the valves useless and expensive if you still decide to change them. Indeed, in the case of adjustment, it will be necessary to completely change the drive glass, which, during the service, has already formed a certain place in the engine head.
Technical specifications
Particular attention should be paid to the following technical data 1SZ-FE
| Engine capacity | 1.0 l. (997 cc) |
| Power | 69 hp |
| Torque | 95 N * m at 4000 rpm |
| Compression ratio | 10.0:1 |
| Bore | 69 mm |
| Piston stroke | 66.7 mm |
| Total engine weight | 68 kg |
| Declared resource | 1 million km |
Cars on which this engine model was installed
- Toyota Yaris;
- Toyota Echo;
- Toyota Vitz.
