![]() One of them is platinum, the other is iridium.Īs we know, this precious metal has excellent melting properties, wear resistance, corrosion and transmission of electric current.Īlso, the center is usually narrowed, making it needle-like. The center alloys with iridium, and a special U-shaped groove is made on the sides, but not alloyed.Two small points for the electrodes (which are made using conventional technology).Various application options are now distinguished: Sometimes the middle and side electrodes are doped (if it is clear) – with iridium. There are some differences here, but as many manufacturers believe, they are significant. So we come to the most interesting, but in fact, what is better than the usual iridium option? Iridium Spark Plugs or Regular Spark Plugs – which is better? It should be noted that if you pick up the elements from the wrong distance and obstacles, then on the contrary you can – worsen the characteristics of your car! After all, a spark plugs is chosen for your make and model of ignition coil. Here not only gaps are needed, but also resistance.Ī gap of about 0.8 – 1 mm is considered normal, the resistance of the spark plug is usually not indicated on the body, but in the seller’s catalog you can choose exactly the right one for your machine. Iridium Spark Plugs Clearance and ResistanceĮach manufacturer selects a spark plugs from a specific manufacturer for themselves. That’s why spark plug replacement is carried out at 3-4 MOTs, namely 45,000-60,000 km. If you don’t replace the spark plugs in time, or if you don’t adjust the gap correctly, the ignition coil may fail (because it needs more strength to “break” the large height between the electrodes). ![]() This happens because the middle and side electrodes lose some of their metal, they just burn from the constant discharge. Over time, this is usually 50-80,000 km, the size of the electrodes becomes smaller, the gap increases and the coil cannot effectively spark (it turns out to be weak), the car is not attracted, and fuel consumption can also increase. The center electrode is made of an iron-nickel alloy with the addition of copper and chromium.įrom the factory, not only the gaps are strictly defined, but also a certain resistance is selected (around them a little lower) so that the ignition coil can “break through” and provide the necessary strong spark.Typically, the side electrodes are made of steel combined with manganese or nickel.They are the ones that wear out over time and the elements themselves need to be replaced But we need to understand that the main load is carried by two electrodes – central and lateral (a spark passes between them). Now I will not go into detail about the work of these elements. I will have a separate article on this, so be sure to follow my blog.Īs you can see, metals were almost ideal for use in the combustion chamber, if not for the price. But the platinum variants (for example, BOSCH Platinum) have a center electrode that is completely platinum, but very thin, which locks (as if poured) into a dense ceramic insulator.Īlthough in fairness it should be noted that some manufacturers call the iridium option platinum, or cover the point of contact with platinum using a similar technology to iridium (this is not the point now). This is not quite true, of course, iridium is a metal of the platinum group, but it is a transition element, and the method of production is slightly different (we will talk about it below). Others write that nothing changes at all, and the motor works even worse! WHERE IS THE TRUTH? I have experience with such an element, and therefore there is something to tell and show, let’s think about the pros and cons.Īt first I wanted to tell you a little about iridium and platinum. However, if you read reviews on the Internet, then opinions will be completely different! Some people write that this is a “miracle miracle” with all the advantages I have mentioned above (and the service life is also great).
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