How to choose high-performance titanium alloy spark plugs

Currently, spark plugs for many high-end vehicles and modified cars are made of precious metals such as iridium, platinum, silver alloy, and titanium alloy. These spark plugs have high hardness due to their material, which makes the electrodes resistant to impact, have low wear, and have a lifespan of over 100,000 kilometers. So, can we just "ignore" their maintenance? And how to choose the spark plugs suitable for your vehicle? This episode is to introduce the selection and maintenance of high-performance spark plugs.

How to choose the appropriate spark plugs
When choosing spark plugs, it is also necessary to pay attention to some parameter requirements. First, choose spark plugs with the same heat value as the original vehicle. The heat value of spark plugs is marked in numerical form on the spark plug: 1, 2, 3 indicate heat-type spark plugs (currently rarely used); 4, 5, 6 indicate medium-type spark plugs; 7 and above indicate cold-type spark plugs. Secondly, choose high-performance spark plugs with the same resistance; third, the length and diameter of the part that the replacement spark plug screws into (i.e., the threaded part) should be the same as the original vehicle. If this part is longer, the spark plug will protrude into the combustion chamber and collide with the piston top; if the diameter is not consistent, it is impossible to install. In summary, when upgrading spark plugs for civilian vehicles, it is necessary to select based on the engine compression ratio, the brand of the spark plug used in the original vehicle, the heat value model, and the resistance requirements. Different brands of spark plugs have certain requirements for heat value replacement. As long as you consult the heat value comparison table provided by the brand of spark plugs, you can find the suitable high-performance spark plugs.

When should spark plugs be cleaned
The residues of gasoline and impurities in the air, after combustion, form carbon deposits that adhere to the inner wall of the cylinder and the spark plug, which will affect the ignition gap and ignition efficiency of the spark plug, making it unable to work properly, and thus affecting the use of the vehicle. Therefore, it is recommended that ordinary gasoline engine vehicles have their spark plugs cleaned every 10,000 to 15,000 kilometers. The purpose is to remove the carbon deposits and other impurities attached to the electrode, providing a prerequisite for the normal operation of the engine.

The procedure and precautions for replacing spark plugs
1. Before removing the spark plug, it is necessary to blow off the dust on the new spark plug and do not let the dust fall into the cylinder.
2. When pulling out the high-voltage wire, slowly operate by shaking it left and right and up and down. Otherwise, it is easy to break the high-voltage wire. When reinserting the high-voltage wire, you can hear a "dub" sound, indicating that the wire has been inserted all the way.
3. Use a suitable socket wrench to disassemble and install the spark plug. Pay attention to placing the wrench as straight and upright as possible to avoid the part outside the rubber ring of the wrench touching the tail of the spark plug, causing the insulating porcelain to crack.