What type of thread are spark plugs?
Threads. There are currently three spark plug thread diameter and pitch sizes used on motorcycles and ATVs: 10 mm x 1.0, 12 mm x 1.25 and 14 mm x 1.25. There are currently two thread reaches (lengths) used: 1/2 inch and 3/4 inch. Never use a spark plug of the wrong reach.
What does the R mean in a spark plug number?
[R] Resistor – If an R is present, this indicates a resistor type spark plug. Resistor type spark plugs reduce the amount of radio frequency interference (RFI) that can cause ignition misfires and static on the radio.
What are the parts of a spark plug called?
[V] Shell Design – This refers to the thread size and reach of the spark plug. Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range. [YC] Firing End Design – The letters after the heat rating indicates a special spark plug construction feature called the firing end design.
What are the thread sizes for spark plugs?
Threads There are currently three spark plug thread diameter and pitch sizes used on motorcycles and ATVs: 10 mm x 1.0, 12 mm x 1.25 and 14 mm x 1.25. There are currently two thread reaches (lengths) used: 1/2 inch and 3/4 inch. Never use a spark plug of the wrong reach.
How does a spark plug connect to the terminal?
Connects to the terminal by an internal wire. Tip is made of copper, nickel, chromium or other precious metals. The metal carries the high voltage through the spark plug so it can spark when it goes across the small gap between the central electrode and the side electrode.
Which is the Best Metal for spark plugs?
Iridium, like platinum, is a precious metal and has extraordinarily superior properties for a spark plug electrode, for example high-temperature withstand, high strength, and low resistance. In order to further improve oxidation resistance at high temperatures, Denso developed a unique new iridium alloy containing rhodium.
[V] Shell Design – This refers to the thread size and reach of the spark plug. Heat Range – The middle number indicates the heat range of the spark plug, the higher the number the hotter the heat range. [YC] Firing End Design – The letters after the heat rating indicates a special spark plug construction feature called the firing end design.
Threads There are currently three spark plug thread diameter and pitch sizes used on motorcycles and ATVs: 10 mm x 1.0, 12 mm x 1.25 and 14 mm x 1.25. There are currently two thread reaches (lengths) used: 1/2 inch and 3/4 inch. Never use a spark plug of the wrong reach.
Connects to the terminal by an internal wire. Tip is made of copper, nickel, chromium or other precious metals. The metal carries the high voltage through the spark plug so it can spark when it goes across the small gap between the central electrode and the side electrode.
What is the side electrode of a spark plug?
Side electrode, or ground electrode:rn The side electrode is made from high nickel steel and is welded to the side of the metal case. The side electrode also runs very hot, especially on projected nose plugs. Some designs have provided a copper core to this electrode, so as to increase heat conduction.