Monday, November 21, 2011

How do self-lapping valve

As you know, in every automobile engine valves are present. If, it so happened that the valve was bent, then align it makes no sense, because it's quite hard work. It will be better to replace it with a new one. Valve in an engine designed to create compression. If it is new, then in order to achieve maximum compression, the valve should be thoroughly get used. Not all people know how to do self-lapping valve, so in this article we will tell exactly that. When comparing engines by type, then the carburetor, the compression ratio is much lower than that of diesel engine type. Consequently, grinding valves in this embodiment is particularly important position. So that you may need to make lapping the valve! You will need about fifteen centimeters hose with an appropriate diameter, which would have put at the end of the valve. The main function of this tube is to replace the handle. For grinding, you should use a special paste for grinding or, it can be replaced by crushed to a powder, glass. If you use glass, you'll need to mix with the engine (motor) oil! But still, even though the glass and can replace the pasta, it's better to buy special toothpaste, because it is better and quite affordable. Paste should be applied to the edge of the valve. After the application and start grinding immediately. Lapping procedure is carried out carefully, with special attention. Need to ensure that the mixture paste was not hit on the valve stem. If this point is missed, the valve guide will be rendered worthless! The question: "How do self-lapping valves?" - The answer below! For lapping valve cylinder head with the need to put on a table or other horizontal surface. Next, wipe the rod valve is pressed against the seat, you need to put the said hose. Put the hose to rotate with the thirty-degree constant rotations. It is very important always to move the valve to a new location! This is to prevent the formation of strips that may appear on the surfaces of the saddle valve. After all the procedures on the surface of the valve reseat you will (should) have a flat track with a grayish tinge. The width of the strip should be from 1.5 to 2 mm. Usually, the quality of a burn is directly related to the quality of fuel used and its form. If you close the valve, the fuel goes directly into the combustion chamber. In this case, the valve sleeve is unacceptable appearance of leaks. If, nevertheless, leaks are present, have done lapping all over again. Place for a burn-heads need to carefully handle. All leftover pasta (or other substances), must be carefully removed with kerosene. This is not the only way to burn-in valve which can be done independently, there is. For the next fashion, you have to find a "patch", attached to the valve plate with bitumen. Need a special device, the tip of which is inserted into the specially designed recess. Further, the process is running lapping, which is produced due to the constant rotation of the handle. Directly with a burn, the tip will rotate the handle on opposite sides, respectively corner, given initially. As an alternative device, you can use a hand drill. In this case, the chuck to insert a box with a screwdriver (tip). The size of the tip should match the grooves 5-penny coin. Remember the basic rule of self-lapping valve: the valve must adjust oneself only to his seat! Good luck in your endeavors!

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