Many motorcyclists have to synchronize carburetors after certain periods of time. This is largely due to the fact that there are no permanent systems, including carburetor systems. All of them sooner or later start working asynchronously. Long-term operation of the motor on asynchronous power is quite dangerous, since such a practice causes increased detonation, which “kills” the power unit in a short time. In order to prevent such a combination of circumstances, it is extremely important to periodically check and, if necessary, synchronize the operation of carburetors located in a single power system. We'll talk in more detail about how to do this below.
How to make a carburetor synchronizer with your own hands? Our option
Many motorcycle owners are interested in how to make a carburetor synchronizer with their own hands.
Such a device is simply necessary in the garage of any motorcyclist, as well as owners of some carburetor cars. It can be used to configure multi-chamber carburetors. It is used to normalize the enrichment of the mixture, which allows the engine to operate as evenly as possible. Of course, you can purchase a ready-made assembly, but this is not a cheap pleasure. Therefore, most craftsmen make the synchronizer themselves. Fortunately, it’s not difficult to do. This requires minimal skills in assembling various devices. As a result, you will get a good device for minimal money.
What will you need?
To assemble the synchronizer yourself, you will need to purchase some of its components. In general, such a device can cost from 1,500 to 3,000 rubles. But, in any case, it is still cheaper than purchasing a factory synchronizer. First of all, you will need vacuum gauges, the number of them should be equal to the number of carburetors. The simplest option would be to purchase medical IV systems. You will also need a hose to connect this entire facility.
Suitable for Zhiguli washers, the quantity depends on your unit. On average, 5 to 8 meters are required. The brake tube will be useful for making fittings. In general, this is enough. A vice, a metal file, and some other tools will also come in handy.
Now you can start assembling the device. There is not much work here, but you will have to tinker. Here are the main stages of the action:
- First you need to prepare the fittings. They are made at the rate of 2 pieces per carburetor. The tubes are aligned and sawn into pieces. The length of the fittings is not important, the main thing is that they do not interfere. Threads are cut on the workpieces. Sometimes small pieces of tubing may be needed;
- We cut the hose and try it on before doing this. You should not make the hoses too long, because it will cling to engine parts;
Carburetor settings
Making the device is half the battle. It should be used correctly. Many inexperienced mechanics make one mistake that prevents them from fully synchronizing carburetors. The fact is that tuning must be done at very specific speeds. They are indicated in the technical documentation for the carburetor or motorcycle. Motorists who have installed a multi-chamber carburetor need to find this information on the Internet. If the car has a battery of two carburetors, then you should focus on the idle speed accepted for the model.
To operate, you must connect the synchronizer to the carburetor. To do this, special holes are found, which are usually covered with rubber plugs. After connecting, start the engine and bring it to the required speed. They look at the readings of the vacuum gauges. If they differ, you should ensure that they match by turning the air supply adjustment screw. To check the correctness of the settings, you need to turn off the engine and, after restarting, look at the instrument readings; if necessary, repeat the adjustment.
Conclusion
. Synchronization services are quite expensive, and buying a special device will cost you no less. Therefore, the question of how to make a carburetor synchronizer with your own hands is quite relevant. It will cost you relatively inexpensively, and the ability to synchronize carburetors yourself will help you save a lot.
About desynchronization and synchronizer.
The carbs must work synchronously. Symptoms of desynchronization are as follows: engine vibrations begin that were not there before, idle speed may fluctuate a little, fuel consumption increases. I have a forward flow on my Honda CB400 NC 39, and when the carbs get out of sync, the silencer starts shooting like a machine gun. I didn't notice this on the indirect muffler. On the forums they also cite the following symptom: the motorcycle “does not pull.” It is difficult to say whether the synchronized operation of the carbs affects the traction of a motorcycle. It seems to me, after all, not to the extent that it is described. That is, if the motorcycle stopped moving due to desynchronized operation of the carburetors, this means that there are generally arrows in different directions, but how to achieve this during normal operation of the motorcycle is a mystery to me.
As for the time intervals between synchronizations. Usually they say: “synchronize once every so many kilometers.” Moreover, they also add that synchronization is mandatory before the start of the season. It seems to me that this is also slightly exaggerated, because the operation of carburetors is influenced by many factors, such as: the quality of gasoline, falls, and the quality of the road surface on which you have to drive. If you only ride a motorcycle from work to work on good asphalt, refueling at a good familiar gas station, you can climb into the carbs once every couple of seasons and not have any problems. Anyway, I only sync the carbs when the above symptoms start to appear early on. And then think for yourself
