The carburetor is a mandatory power unit for the internal combustion motor of cars and motorcycles. Until the end of the XX century, they were installed on most cars, but nowadays they are firmly replaced by more convenient and functional injection systems. Now they are often found in cars of 20 years and more.
Today, float models are used, which are the most advanced. You can see them on most cars.
- First, the fuel is directed to the float chamber. As soon as the float reaches the required level, the float rises and closes the valve through which the fuel is supplied. When the float is lowered, the fuel supply is renewed.
- The fuel then flows to the mixing chamber where the fuel combination is created. From above, the air is brought in and connected to the fuel. In the chamber, there is a spray tube with a jet nozzle as well as a throttle and a diffuser. The jacquer is a plug that prevents fuel from escaping from the float chamber. A damper attached to the pedal is called a throttle. When pressed with your foot, it opens and the fuel combination enters the cylinder. As a result, the car picks up speed. There is a distribution tube in the diffuser.
- At startup, a vacuum is formed in the mixing chamber and fuel is sprayed out of the sprayer. The airflow rises, which when mixed with fuel carries the fuel into the cylinder.
To increase speed or ride in a loaded car, a mixture strongly enriched with fuel is needed. The situation is similar when driving at idling speed, at low revs. A simple carburetor can’t provide such conditions.
To enrich the mixture with fuel, an accelerator pump is used. When the pedal is squeezed out sharply, air passes which move faster than fuel. This is due to the lack of fuel in the flammable liquid. If there is a pump, the power unit is more powerful.
Edelbrock 1405 rebuild kit instructions
Carburetor care and its correct maintenance will not only help to significantly extend the life of the carburetor, but also avoid more serious, and therefore more expensive to repair vehicle breakdowns.
When dismantling a carburetor, it is very important to check whether the locking needle is jammed, how tight it is to the saddle, the condition of the float, and whether it can swing on its axis. The tightness of the float is checked when it is immersed in water heated to 80 degrees. If the float is in good condition, no air bubbles will appear on the water surface. The defective float must be replaced by a new one. It is also important to check the movement of the economizer piston. If it jams in the lower end position it will cause overrunning of petrol, and if it jams in the upper-end position it will cause the engine to lose power. All the jets, apart from the idle air jets, are turned outward and therefore no carburettor has to be disassembled to flush them out. It is necessary to check the throughput characteristics of the jaclers approximately twice a year, because their holes may decrease due to the deposition of resinous substances in gasoline, or vice versa increase due to wear.
It is important to wash the jaclers in the carburetors in a factory accepted way. To check the throughput characteristics of the main jacquer, screw the block of jacquers into a special tip until it stops in a rubber gasket with a hole. In this case, the gasket should close the additional jelly. The depth of the socket and the thickness of the gasket should be such that the radical hole is outside the tip when wrapped. The direction of the water during spillage should be in the direction of the petrol flow. The main vial must be plugged during pouring.
The throughput of the carburetor jacquer is indicated on the calibration label. The first number is the throughput characteristic of the main jacquer. The second is extra and the third is the idle speed jiller. In addition to this, the tag is stamped series carburetor.
Edelbrock, LLC, supplies many spare parts for cars and motorcycles to the international market. The product range includes approximately 10,000 items. Edelbrock presents various carburetors, camshaft kits, engine parts, fuel system parts, flywheels, cylinder head, etc. The company produces components for cars, trucks, racing cars, motorcycles, jet skis. A special product line is made for motorcycles of Harley-Davidson brand.
All Edelbrock spare parts are ISO 9001 certified. In every part of the manufacturer, invested hours of research, design, testing.
- While doing an Edelbrock 1405 rebuild, you should ensure proper usage of gaskets and parts packaged in the kit by using old gaskets and parts for identification.
- Idle mixture screws should be seated lightly and then backed out approximately 1-1/2 to 2 turns for initial setting.
- Then you should apply a light film of lubricant to a cup of plunger assembly before installing.
- After that, you Install open end of “S” link in pump shaft toward choke valve.
- Venturi assemblies should be then reinstalled in their proper location.
- Be sure the fuel baffles on bowl cover slide down in front of baffle plates in fuel bowl or the bowl cover will not index correctly, causing the floats to hang up.
When installing bowl cover care must be taken to centre small brass bleed tubes on primary venturi assemblies so they will pass through holes in bowl cover. Make sure you refer to Adjustment Data for adjustment specification.
Edelbrock 1405 electric choke kit
If you want a reliable starting in any weather, you can purchase an electric choke kit. It will help you turn your carburetor into an electric choke operation. The Electric Choke Kit includes all necessary parts. The parts are of excellent and reliable quality. The kit costs around $70 to $90.