GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW) | ||||||
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11:13 Jan 11, 2021 |
English to Polish translations [PRO] Tech/Engineering - Automotive / Cars & Trucks | |||||||
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| Selected response from: Frank Szmulowicz, Ph. D. United States Local time: 06:54 | ||||||
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3 | nieznaczna zmiana jasności koloru |
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Discussion entries: 2 | |
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nieznaczna zmiana jasności koloru Explanation: Tutaj jest mowa o zmianie koloru, tutaj jasności . cccccc If the "color" of the ground strap changes near where it is welded/attached to the base ring (last thread ring), then it means that the plug heat-range is "too hot", because heat is not being transferred/cooled from the strap to the base ring quickly enough !!!! The strap might begin to act like a "glow-plug", eventually causing preignition and/or detonation later on. https://www.ferrarichat.com/forum/threads/spark-plug-reading... ccccccccccc The ground strap indicates the heat range of the spark plug. If the "color" of the ground strap "changes" too close to the ground strap's end, (located above the center electrode), then the heat range is "too cold", meaning that the strap is loosing heat too quickly to the base ring. It is not able to burn off deposits until near its end. If the "color" of the strap changes near where it is welded/attached to the base ring (last thread ring), then the plug heat-range is "too hot", because heat is not being transferred or cooled from the strap to the base ring quickly enough. The strap might begin to act like a "glow-plug". Eventually causing pre-ignition and/or detonation later on. The proper heat range is when the "color" is at the half-way point on the strap. This means the plug is neither too cold or too hot. Color: (Meaning the evidence of heat or lack of heat by the appearance dark vs. lightened color of metal. Jetting The air/fuel mixture ratio shows up on the base ring. This is the last thread ring, it has the strap welded to it. You want a full turn of light soot color on the base ring!!! If you want to tune for maximum power, then you want 3/4 to 7/8ths of a full turn of light soot color to show up on the base ring. This is on ragged-edge of being too lean, but will make the most HP in most engines. To be safe, leave it at a full turn of light soot color. If the base ring has a full turn of color, but there are "spots" of heavy build-up of "dry soot" on top of color, then jetting is too rich. ****If the base ring has a full turn of color with some spots of heavy dry soot, then jetting is too rich, REGARDLESS, if the porcelain is "BONE-WHITE", jetting is still TOO RICH.**** -------------------------------------------------- Note added at 2 hrs (2021-01-11 13:34:52 GMT) -------------------------------------------------- https://sites.google.com/site/kensautomachineshop/technical-... |
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