Denso's Tough Plug design combines an ultra fine 0.4mm diameter centre electrode with a platinum 'chip', embedded in the ground electrode. Should I Gap My Denso Plugs? The photograph shows flame reflected by the variation in density. A plug’s gap must be adjusted to account for these changes in engine conditions and ensure a successful ignition sequence. Be the first to know about sales and promotions, Even if the preset gap matches that required by your engine, it is always good practice to physically check the gap as it may have shifted during transportation. Copyright ©2018 DENSO CORPORATION. *1 FEM(Finite Element Method analysis): General method to measure electrical field strength. TT or Twin-Tip technology promotes spark energy concentration and explosion, which translates into improved acceleration and economy. Iridium TT™ Hot Type Spark Plug - Part Number 4701 by Denso. Denso TT plug as used in 2.0 L FS-DE engine. Or what? Proper gapping technique should be followed with any spark plug, but special care should be taken with fine wire plugs. supplier (o.e.m. However, Denso understands a plug can only operate to its optimum potential if properly gapped. DENSO spark plugs are manufactured with a pre-set gap. However, a plug may fit hundreds of engines, from cars to golf carts. to enable use of electrode, at 0.4 mm in diameter, in the IRIDIUM TT. With nickel plugs, especially with motorcycles, the gap may need adjustment. What would cause the coil packs to go bad, to large of gap? iridium, the gap is wider than in normal type (0.7 → 0.9 mm). However, after raising compression and installing a turbo, a smaller gap is required to ensure ignitability in the denser air/fuel mixture. Riferimento: 14R-4CIU EA0,5 Z205 Marca: FEDERAL-MOGUL 14R-4CIU EA0,5 Z205. Racing, Iridium Plus, and Iridium Tough, Iridium Long Life, Double Platinum, U-Groove, Resistor, Standard, Nickel TT, Platinum TT, Two-Tops. Because the IRIDIUM TT is low in combustion variation and enables a reduction in idling speed, further improvement can be expected in fuel efficiency. Ultimate Endurance and Power. The evaluation was conducted by turning on the ISC and setting the average engine speed to 800 rpm (idling). Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. With improved performance at a lower cost, experience a smooth and superior ride anytime, anywhere. 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology. Denso's Tough Plug design combines an ultra fine 0.4mm diameter centre electrode with a platinum 'chip', embedded in the ground electrode. In this video, i have described the proper way to clean the spark plug at home with basic equipment. I've got a set of NGK PFR5J-11 which theoretically are factory gapped to 1.1mm and my service manual says 1.1mm so should match. It made some difference with a smaller gap and most of my rasp noise that I have had with my DTLT's seems to have vanished. To contact them, click here. Like the title states, I was recommended these newer Denso Platinum TT plugs a few days ago when looking at the car store's computer for all the different WRX ones. Pmi COV (coefficient of variation) in the diagraph shows fluctuation in IMEP (indicated mean effective pressure). Introducing the Iridium TT Spark Plug - featuring, at 0.4mm, the worlds smallest diameter centre electrode and a 0.7mm ground electrode. 4 shows the results of the examination of combustion variation and fuel consumption, using a 1,800-cc, four-cylinder engine. It's crazy I know but it did. Denso will not warranty a plug who’s center electrode is snapped during gapping. Illustrates increased space between electrodes, reducing quench, while maintaining same plug gap. This item Denso (4702) IK20TT Iridium TT Spark Plug, (Pack of 1) DENSO IK20 Iridium Power Spark Plug Ik20 X 4Pieces Ignition Plugs Racing Upgrade 6 PCSNEW -- DENSO #4504 PLATINUM T T Spark Plugs -- PK20TT Fuel Economy: Invented by DENSO, the Iridium TT Twin-Tip Technology enables larger spark concentration and explosion, delivering more … Engineered with the smallest tip in the market, the DENSO Iridium TT spark plug delivers more complete combustion, giving you superior fuel economy over any other plug. As this figure shows, IRIDIUM TT can reduce the Pmi COV approximately 3.1% and accordingly reduce fuel consumption by 2.4%, compared with the Iridium Spark Plug. Proper gapping is especially essential in modified vehicles. Denso # 4710 0.4mm Iridium Center Electrode 0.7mm Platinum Ground Electrode Larger spark translates to more power and superior fuel economy 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential 0.7 mm needle tip ground electrode: promotes higher spark energy and less heat quenching Denso calls this a minimum quench electrode design and claims improved fuel economy, faster starts and enhanced flame propagation for increased engine efficiency. 8x Denso Iridium TT Spark Plugs Stock 4706 Iridium Core .039"(1.0mm) Gap IQ16TT | eBay Unparalleled, the Iridium TT is designed to last beyond 100,000 miles providing coverage for most makes and models on the road today. Iridium and platinum technologies combine with Denso’s 360-degree laser welding process in Denso Twin-Tip Iridium to create a plug with a lifetime over 100,000 miles. Both are suppose to be long life plug with iridium tip and platinum pad. gap but when I found them all to be more like .037 … ※”Spark plugs” means any type of DENSO’s spark plugs, including but not limited to Iridium Power, Iridium TT, Iridium. This spark plug features a ‘twin tip’ - a thin centre of 0.4mm and a protruding ground electrode of 0.7mm in diameter - which boosts your car’s horsepower and torque. As a result, the flame kernel rapidly develops and the engine's power is drawn out to its maximum potential. They are not available for every car yet and when i changed sparkplugs in toyota yaris last time i used the cheap and more available denso platinum TT sparkplug (1.1mm … Engineered with the smallest tip in the market, the DENSO Iridium TT spark plug delivers more complete combustion, giving you superior fuel economy over any other plug. The photographs indicate that, in the case of the Iridium Spark Plug, the size reduction of the gap (from 1.1 mm to 0.6 mm) interfered with flame growth, while in the case of IRIDIUM TT, flame growth was ample and greater than that of the Iridium Spark Plug in spite of the narrowed spark gap (0.6 mm). This aftermarket range makes advanced OE-quality technology available to a wider range of … Power: The Iridium TT's revolutionary 0.4 millimeter center electrode means significantly improved combustion and fewer misfires – optimizing power output like never before. They're supposed to have a 0.040 in. This spark plug features a ‘twin tip’ - a thin centre and a protruding ground electrode both 1.1mm in diameter - which enhances your engine’s efficiency and extends the spark plug’s shelf life. Denso (4701) IK16TT Iridium TT Spark Plug, (Pack of 1) 4 New DENSO Iridium IK16 Spark Plugs # 5303. What this means is the Denso Iridium TT is equipped with two tips: a 0.7-millimeter Platinum ground electrode, and a 0.4-millimeter iridium center electrode. The DENSO difference: Engineered with the smallest tip in the market, the DENSO Iridium TT spark plug delivers more complete combustion, giving you superior fuel economy over any other plug. Offering superior ignitability and up to three times the service life of a standard nickel spark plug, Iridium TT delivers improved … The owner manual says Denso or NGK Iridium plugs. 1 shows the results of studying the influence of electrode shape on flame growth, using the Iridium Spark Plug and IRIDIUM TT. Sure it was not a long trip, just 116 miles or so, but as I posted, I have never, EVER gotten better than 16.8 mpg on my truck, and that 16.8 was a … DENSO Spark Plugs 93% car model coverage. As a result, combustion is good for all types of driving, the engine starts easily, and acceleration improves. The ignition process is affected by increased compression, fuel type, nitrous and high output ignition systems. Harnessing the low required voltage of the 0.4 mm dia. Therefore our recommendation is to upgrade to longer DENSO Iridium spark plugs, which improve ignition and engine performance, as well as extend the spark plug replacement interval. The o. manual says a .043 gap so I check them with my feeler guage and note they are off - just a tad; I adjust the gap a bit farther being careful not to abrade the … RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. And last of all, a couple of weeks ago, I put in the Denso Iridium Twin Tip plugs, took a trip and got 18.6 mpg. A higher idle speed represents higher ignitability. Even if the preset gap matches that required by your engine, it is always good practice to physically check the gap as it may have shifted during transportation (not all spark plugs are packaged in a way that protects the firing end ). I nab a four-set of NGK Laser OE spec Iridium Plugs. TT or Twin-Tip technology promotes spark energy concentration and explosion, which translates into improved acceleration and economy. All rights reserved. Notes: Iridium Long Life -- Gap 0.044; DENSO is O.E. *Gapping is not recommended on multi-ground plugs. Continuous R&D work has achieved additional patented technologies for Aftermarket. The smaller the electrode the more concentrated the electric potential at the tip of the electrode and the stronger the electric field that affects required voltage and the lower the required voltage. 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