Now on a second set of the same plug with 75,000 miles. In a pinch they could have been cleaned up, regapped (carefully) and put back in service. That Denso determined the gap to optimal for that particular Iridium plug and if my aging system could produce enough energy to fire standard plugs at the FSM gap, then it should be able to fire the Iridium plugs at a slightly wider gap.Įither way, I've ran one set of Denso Iridium Power plugs for about 100,000 miles and when I took them out they were in not so bad a shape, center electrode still present, side electrode worn with increased gap. To fire an Iridium plug compared to a standard plug. It's my impression from reading Denso's literature that it takes less energy NGK also recommends adjusting the gap no more than +/- 0.008” from the factory preset gap. If the gap must be adjusted, use a tool that only moves the ground electrode and does not pry between or against the electrodes. NGK recommends a round wire-style or pin gauge gap tool to measure the gap. Care must be taken to avoid bending or breaking off the fine-wire electrodes. While most NGK spark plugs are pre-gapped, there are occasions when the gap requires adjustment. Do not change the gap on platinum, iridium or twin tip spark plugs, as the fine electrodes may get damaged. Always use a special spark plug gapping tool to change the gap. With nickel plugs, especially with motorcycles, the gap may need adjustment. Instead, just make sure that which ever one you get is properly gapped because they both require proper gapping.From Denso's website FWIW (I'm not a spark plug expert):ĭENSO spark plugs are manufactured with a pre-set gap. So when trying to decide between the two, you don't need to worry so much about which one to get. However, we do have plenty of NGK Iridium IX's in stock and ready to ship. There is no ETA on when the next batch will come in nor how many it will include. Twice since then we got a shipment of four or five sets in and they sold out immediately. We have had several hundred sets on order since December of 2012. Denso ITV22's are currently on a galactic back order. They just know a guy or have an uncle who says one thing or the other. I hear stories from die hard believers on both sides about how terrible the other plug is but most of those guys have not had experience with both plugs. Even though the gap is further from the ideal gap with the NGK's, it does not mean that it is harder to achieve the appropriate gap with these plugs.įrom a performance stand point, with both sets of plugs gapped properly, you will not be able to tell a difference between the two. The NGK (LTR7IX-11) Iridium IX Spark Plug. NGK also offers a One Step Colder Plug comparable to the Denso ITV22. Our experience has shown that operating your turbocharged engine at higher than stock boost levels requires that your spark plugs be replaced at around 12,000-15,000 mile intervals. Denso currently offers this spark plug as part # ITV22 (please be sure to verify each plug is properly gaped before installing them). 028” (6.6 – 7.1mm) be used on a 1-step colder temperature plug. Although, operating the car with higher than stock boost levels or with the calibrations that are loaded on the AccessPORT, require that a spark plug gap of. Our data has shown that the factory spark plug temperature range (6) and gap (~.034”) are sufficient for stock boost levels and normal driving conditions.
0 Comments
Leave a Reply. |