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It is important to note that the some spark plugs - such as the Beru Silverstone spark plugs (SILV001) - are a non-resistor type. This means that they do not use internal resistors to slow the electrical current.
This is an important benefit in certain circumstances – such as when used in conjunction with the Nology Hotwires. Because the Nology wires hold the spark current within an internal capacitor, the result is an otherwise delayed spark delivery to the spark plug. So by combining this effect with the non-resistor spark plug design, you are able to account for the delay at the capacitor and ensure proper timing of the spark delivery. However, if you were to use the non-resistor plug design with a conventional spark plug wire (such as the Magnecor, SPS, or stock Saturn wires) in which there is no unusual delay, then the non-resistor spark plug design can allow the spark to enter the combustion chamber much sooner than intended. We have found that this can cause misfires, problem codes, and SES (service engine soon) lights. So as a rule, we typically suggest using the Beru Silverstone spark plugs only in conjunction with the Nology Hotwires – and conversely – using the Nology Hotwires only in conjunction with the Beru Silverstone spark plugs. Please also note that for best results with the Nology/Beru combination, a larger-than-stock spark plug gap should be employed. We suggest a gap between 0.050-0.060 inches. (The stock gap is 0.040 inches.) Use caution when setting the gap on the Beru Silverstone spark plugs. The silver center electrode is very soft and can be damaged easily. Always set your gaps by prying only on the ground electrode – do not make contact with the center electrode. |
