Spark plug heat range is the measure of how fast the spark plug tip dissipates combustion heat. Total: £0.00, BMW |
This web site uses cookies. Low powered engines don't normally produce as much combustion warmth so won't heat up a plug as much or as rapidly as a high BHP vehicle, therefore the plugs have to be designed accordingly so they can reach and not exceed optimum operating temperatures. This web site and all data within is copyright. 2544 is the coldest plug in that plug family, and 2546 is the hotest. If you are unsure of the correct heat range to use, always start with a colder spark plug. A colder plug transfers heat faster while a hotter plug is slower. However, according to an Autolite reference chart, Autolite 86 has the same heat range as 2244 and Autolite 303 is a hotter plug than 2974. If you are using Internet Explorer 8 or 9, you can solve this problem by going to Tools > Internet Options > Advanced and ticking the 'Use TLS 1.2' option. The heat range of a spark plug is defined as its ability dissipate heat from the tip." Ford |
12 page guide by Champion Sparking Plug Co. Ltd.'s Competition Department, 1973. Product linkage to vehicles or equipment from this publication are considered under normal conditions of use, fitted by a professional. Rather, the heat range is a measure of the spark plug’s ability to remove heat from the combustion chamber. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. The spark plug temperature rises too high and induces abnormal combustion (pre-ignition): this leads to melting of the spark plug electrodes as well as piston seizure and erosion. In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. Therefore, it is impossible to chart an Autolite heat range hierarchy, let alone a standardized comparison to other spark plug brands. The goal is to keep the cylinder temperature between 550*c and 800*c which is about 1020*f to 1470*f. This temperature range is cool enough to prevent knock and not melt the plug tip, but still hot enough to … For security and data protection reasons It is highly recommended that you update your browser. It is the measure of how fast the spark plug tip dissipates combustion heat. All applications, illustrations and technical information detailed on this site have been assembled based on the latest information available. NGK Spark Plugs pioneered the use of a copper cored electrode in 1958, which enables a spark plug to heat up quickly and also dissipate heat quickly giving an ultra wide heat range. A colder heat range spark plug has an insulator design with a shorter heat flow path to the … NGK platinum plug = BPR6EVX. The part number you have entered is unknown or incorrect. 0 Items
The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold). The data shown here, particularly the database as a whole, shall not be copied. This means the spark plug will heat up easily and reach its optimal operating temperature. A spark plug’s heat range has no relationship to the actual voltage transferred through the spark plug. High performance engines on the other hand produce a large amount of heat, hence a high heat range (or cold) spark plug such as a 10 heat range needs to be used to resist the heat developed by the engine. … In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70°C to 100°C from the combustion chamber. It must do this in a precise and controlled manner so the spark plug will: Stay cool enough to avoid pre-ignition and/or electrode destruction due to detonation. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. Heat range is the speed at which a spark plug can transfer heat from the firing tip to the cylinder head water jacket and into the cooling system. Commonly, you can spot a low heat range (or hot) spark plug as it typically has a long thin insulator nose which can heat up quickly / easily and will not dissipate warmth to the metal shell as rapidly, where as a high heat range (or cold) spark plug has a short thick insulator nose which will transfer heat much easier. Stay cool enough to avoid pre-ignition and/ or electrode destruction. The relationship between the spark plug temperature and vehicle speed and heat range is expressed with a graph like that in the figure. Tip dissipates combustion heat find the correct heat range Critical not be able to check out, function... 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