1G engines: specifications

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

Gasoline in-line, six-cylinder engine options first left the conveyor belts in 1979. Talented Japanese engineers from Toyota, who managed to produce the entire line of the G series with a volume of 2 liters, had a hand in the development. They gave the "1G" engine a belt-driven camshaft, but a broken camshaft didn't affect the valves. What else is special about this "heart" of the machine?

The nature of FE patterns

For eight years, the Japanese have successfully equipped cars with the 1 G FE engine, which has become an alternative to the 12-valve inline six. It was ranked among the format of the most reliable devices at that time due to increased power characteristics and increased torque. There was no fundamental improvement, but modernization was necessary due to the appearance of Toyota restyling.

Time for change

The era of a number of adjustments overtook the 1G engine in 1998. The main reason for this changeit became necessary to equip the Toyota Altezza sports car with more dynamic parameters. The designers had to increase the engine speed, increase the compression percentage and equip the cylinder head with a spectrum of electronic control devices.

The updates resulted in the new name of the "1G beams" engine, acting as the most progressive power unit in the Japanese auto industry. The names are similar in sound, but their practical side is different.

The structural component of the motor

The “restyled” version of the engine has 24 valves per camshaft. A special gear makes the second camshaft function. The "1G" engine in this version has a complicated structure, including a cylinder-piston group, crankshaft and cylinder head. What models were equipped with such a motor? He entered the European market on Crown Comfort, Lexus, Altezza.

As for the electronic equipment, the valve timing correction device "VVT-i" works in this system, the throttle is electronically controlled, the car is endowed with power thanks to the contactless ignition DIS-6. Adds benefits to intake geometry control. What does all this mean for car owners?

Exploitation nuances

Drivers' reviews of the "1G fe beams" engine characterize it for the most part on the positive side. This opinion has been firmly held throughout the history of existence.products of the Japanese concern. What are the experts looking for?

The improved version needed close monitoring of the condition of the timing belt. Particular emphasis should be placed on the timely replacement of the lubricant, otherwise problems cannot be avoided. The first part of the car that suffered from the use of unsatisfactory oil by the motorist was the VVT-I valve. Its elementary clogging caused a reason to visit the service.

Often, malfunctions can be caused not by a problem of the power unit itself, but by malfunctions in its component parts. Do not run and disassemble the engine if it does not start. In the configuration with this motor modification, it is first better to check the starter or generator. In normal operation, the state of the thermostat, water pump plays a role, the task of which is to provide a comfortable temperature regime. Self-diagnosis helps to identify most of the problem areas.

About the problems in more detail

In ICE, the following difficulties may occur:

1. The eternal companion of every motorist is an oil leak. This happens through a pressure gauge. There is only one way out: to make a simple replacement of the device.
2. The sensor signals that there is not enough pressure in the system. Most often, the reason lies in the technical malfunction of the device itself. Will have to buy a new one.
3. Often the car does not work stably at idle. The culprits of this "ailment" are the xx valve, throttle, throttle sensor. Needs proper tuning or replacement.
4. Starting a "cold" engine "1G" is carried out withlabor. Usually this occurs due to a malfunction of the nozzle or due to compression failures. Mistakes in timing marks also lead to this.

Following the manufacturer's regulations, you can avoid unnecessary repair costs. Another series is of particular interest.

Last of the 1G collection

The last modification was released in the Toyota 1g engine line in 1992. It was a frequent "guest" of the engine compartment on "Crown", "Mark II". Variation "1G-GZE" had a distinctive feature - it was paired only with an automatic transmission. Drivers could drive on 168 hp

The Japanese forced the quality indicators by releasing a good product into the "paws" of the international car market. What was done? So:

• In the 1G GZE engine, the resource has increased, the device has become more reliable and performs its functions better.
• It had good maintainability.
• 7 injectors help cold start.
• Despite the weight of the cast-iron cylinder block, the mechanism did the job.
• He is one of the few lubricants that do not place high demands on the quality of lubricants.
• There are practically no overheatings: this is how the design is conceived.
• Torque is available from low revs, often compared to the advantages of diesels.
• You can adjust the idle speed as part of the overhaul.

Many complained about decent fuel consumption and some other defects.

Interesting fact! Better at every MOTdo the valve adjustment. This is done according to the standard with the help of nuts. The absence of hydraulic lifters, other technological sophistications makes the motor practical, not requiring serious requirements for the quality of service.

About common problems

The classical structure, it would seem, is simple and should not raise problematic questions. Life has shown the other side of the coin. The difficulty was the costly repair of the mechanisms. What "suffers" row "six"? So:

• Vehicles can stall right in the middle (do not start further), the starter is spinning. In case of sudden problems, there can be two reasons for this: incorrect fuel supply and defects in the ignition. We need to check the pump, measure the pressure, electrical wiring.
• Oil leakage happens too. The "treatment" may be a permanent dipstick test once a month. Oil must be mentioned separately. In summer, the best recommendation for auto mechanics would be 10W40 lubricant, in winter - 5W40, which can withstand Siberian frosts. This option is suitable for "Mark II".

What advice do service mechanics give?

A strong word from the pros

In the FE modifications, the valve does not bend when the belt breaks, which cannot be said about the Beams variation. The list of routine maintenance includes:

• compliance with the rules for replacing the timing belt after driving 100,000 km;
• when choosing a lubricant, consider the condition of the oil seals;
• having reached the mileage mark of 20,000 km, you will need to change the fuel filter,located under the hood of the FE. Beams has it built into the gas tank;
• in the same period it is better to change the candles, adjust the intake and exhaust valves.

In case of detection of malfunctions with uncertainty, it is better not to undertake their elimination. It will be cheaper to go to a service station, where professionals will repair, fix, adjust and fill in good oil that meets international standards. The automaker recommends maintenance after 15,000 km, maintenance is recommended every 10,000 km. A careful attitude to any unit promises only a positive result: in gratitude, the “steel horse” will fly off-road, allowing the driver and passengers to enjoy the comfort of their seats, without thinking about knocks, creaks and noises under the hood.