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Oil cooling is the use of engine oil as a coolant, typically to remove surplus heat from an internal combustion engine. The hot engine transfers heat to the oil which then usually passes through a heat-exchanger, typically a type of radiator known as an oil cooler. The cooled oil flows back into the hot object to cool it continuously.
However, its weakness is high-end power. The 22R has a large displacement and a strong block, but its comparatively long stroke and restrictive head limit its use in high revving applications. Thus, the Toyota 18R-G, 2T-G, 4A-GE and 3S-GE 4-cylinder engines are better suited for performance applications.
Other manufacturers may modify the engine after it has left the Toyota factory but the engine still keeps the original Toyota designation. For example, Lotus added a supercharger to the 2ZZ-GE in some versions of the Lotus Elise and Exige, but the engine is still labelled 2ZZ-GE, not 2ZZ-GZE. Examples: 3S-GTE 3S – Third model in the S engine ...
The August 1983 redesign (sold as model year 1984 vehicles in North America) introduced the Xtracab extended cab option, with six inches of space behind the seat for in-cab storage. These models carried over the carbureted 22R engine while model year 1984 also saw the introduction of the fuel injected 22R-E engine. Two diesel engines were also ...
Fuel injection became standard on all North American Celicas started from August 1982, therefore the 22R engine became 22R-E (or 22R-EC with California emissions equipment). In August 1982, Toyota added the GT-S model to the North American market to re-inject the sports image that Celica had lost as it grew larger and heavier with each ...
In race trim it was a high-performance engine of 2.1 L (2,090 cc) with either a Toyota or a KKK/K27 turbocharger, electronic fuel injection, and a twin-spark ignition system, producing 360 to 600 PS (265 to 441 kW; 355 to 592 hp) depending on race trim. [14] The 1984 Group B rally version produced 326 PS (240 kW; 322 hp) at 8,000 rpm. [13]
Some engines have an oil cooler, a separate small radiator to cool the engine oil. Cars with an automatic transmission often have extra connections to the radiator, allowing the transmission fluid to transfer its heat to the coolant in the radiator. These may be either oil-air radiators, as for a smaller version of the main radiator.
Indications of low oil pressure may be that the warning light is on, a low pressure reading on the gauge, or clattering/clinking noises from the engine. Low oil pressure is a problem that must be addressed immediately to prevent serious damage. The leading cause of low oil pressure in an engine is wear on the engine's vital parts.