Tuning the GAZ 66 engine: no chip tuning needed
As a rule, the presented car model is modified with a 200 kg V-shaped engine ZMZ-66. However, let's return to our days and take a closer look at tuning the GAZ 66 engine.
When modifying this car, most often they are limited to installing an MTZ engine, a D.245 diesel engine on it (or altering it, as in the video) or carrying out the procedure of bracing the rings.
However, this is, let’s say, the “simplest” option, but if you want to carry out a solid tuning and install a relatively economical engine, then you can safely use a used Isuzu with a capacity of 4 - 4.5 liters. In addition, ZIL-130 very kindly “saved” for us a gearbox with fifth gear, full synchronization and the necessary spare parts.
There have been cases where craftsmen have installed a hydraulic coupling from the Steer-560 on a car, but there is no particular need for this. Chip tuning of GAZ 66 is impossible without a computer in the car. Therefore, we are limited to the modifications indicated above.
Tuning the GAZ 66 dashboard: add brightness
The dashboard of the presented car model is quite good, it does not need to be changed. The only thing you can do is complement it with beautiful lighting. To do this, you will need LEDs as backlight diodes. It is better to choose ones with white light because they are brighter and more popular than blue lights. With LEDs you can achieve a high level of illumination and significantly improved readability of the instrument panel.
First you need to unscrew the panel screws and remove the casing, instrument panel and glass. The arrows should be removed carefully. According to the recommendations of experts, there is no need to pull the device; you should remove it by gently rocking it in different directions.
When carrying out such a GAZ 66, you need to follow the sequence of installing the LEDs. A popular method is to mount an LED lamp in place of the factory lamp. This allows, ultimately, to create excellent quality and high reliability of LED backlighting. Then you need to mount the backlight, check the polarity and install the panel in its original place.
Alternatively, you can use special programs on your computer to create your own stencil for devices and install it in them. Such a minor innovation will beautifully complement the overall modernized interior of the car. (Below are diagrams of the instrument panel and controls of the GAZ 66 for reference and use in the tuning process).
Ways to reduce fuel consumption
The consumption rate of GAZ is 66 with, for example, a Mercedes-Benz M316 engine installed with a displacement of 4.3 liters and a Mercedes manual transmission, which is reduced to 14.5 l/100 km when driving on the highway.
It is clear that when driving off-road, this figure is slightly higher - 18 l/100 km, but even this cannot be compared with more than three dozen liters of rated gasoline consumption per hundred kilometers.
Example of an engine from a Mercedes M316
Installing HBO on a carburetor
Another way to reduce fuel costs is traditionally to install gas equipment on a native carburetor engine. However, the experience of those who have made such an attempt shows that gas is not entirely suitable for the ZMZ engines installed on GAZ-66 due to the too low compression ratio in the engine cylinders.
The fuel consumption rate increases sharply to 45-55 l/100 km and no savings occur, especially if we take diesel for comparison. In addition, when installing LPG, there is a significant reduction in engine power, and its off-road operation becomes almost impossible.
In fact, the main advantage of “shishiga” over its analogues is lost. We should also not forget about the need to install gas cylinders, which eat up a significant part of the useful volume and significantly reduce the already not very large carrying capacity.
Diesel engine installation
So, if you are already, or are just about to become, the proud owner of a GAZ-66, and you are not satisfied with the really high gasoline consumption rate of your original engine, then the best option for you would be to look for a car with an already installed diesel engine or to independently convert it to a new engine.
self-installation of the engine on gas 66
Just keep in mind that replacing the engine necessarily entails replacing the associated gearbox. This significantly increases the budget of the entire event.
Therefore, if the only purpose of the modification is to reduce fuel consumption and, accordingly, financial savings on fuel, then such investments are justified only with constant use of the car. In the case when you take your “shisharik” out fishing or cutting wood only a couple of times a year, it will be cheaper to simply restore the original gasoline engine to good condition. However, for those who, in addition to saving fuel, also need to increase the power and, therefore, the cross-country ability of the vehicle, installing a decent diesel engine on the GAZ-66 base is a completely justified investment of the money, effort and time spent. There are very few trucks that can compete with a diesel “shishiga” in overcoming the obstacles of full-fledged off-road conditions.
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