NGK # 6418 Iridium Spark Plugs BKR6EIX - 4 PCS NEW

Product Information

BKR6EIX (NGK-6148) a.k.a Iridium IX - This is pregapped at .032 and should be adjusted only with a professional adjusting tool. The circle type gap tools can break the fine point on the iridium tip. This is a single ground electrode plug. NGK Iridium 7 (BKR7EIX) - One steps colder (In car for 6k on Revo Stage 2, changed for 2+, no issues other than electrode discolouration causing concern) In my bike racing days we used to use gunsons colour tune which was essentially a glass spark plug which meant you could see the colour of the spark with the engine running and adjust mixture to fine tune a nice blue flame, it didnt take much to turn a yellow flame blue. these days you could not adjust mixture so you just have to rely on the manufacturers or tuners map to get it right. Been looking into spark plugs for my Mini Cooper S and thought it would be of value to document what I have found out. If you know more or have something to add please feel free to do so. Maybe this thread could become a FAQ ?

A special alloy coating covers the shell of every LPG Laserline spark plug, protecting it from the higher temperatures and the increased risk of corrosion. No other manufacturer currently offers a similar coating. Designed specifically for the performance enthusiast Iridium IX offers extreme ignitability, improved throttle response and superior anti fouling. An unaltered engine will run within the optimum operating range straight from the manufacturer, but if you make modifications such as a turbo, supercharger, increase compression, timing changes, use of alternate racing fuels, or sustained use of nitrous oxide, these can alter the plug tip temperature and may necessitate a colder plug. A rule of thumb is, one heat range colder per modification or one heat range colder for every 75–100hp you increase. In identical spark plug types, the difference from one full heat range to the next is the ability to remove 70 degrees C to 100 degrees C from the combustion chamber! Do not make spark plug changes at the same time as another engine modification such as different injectors/timing changes different boost loadings from your chosen forced induction, as in the event of poor results, it can lead to misleading and inaccurate conclusions, an exception would be when the alternate plugs came as part of a single precalibrated upgrade kit. When making spark plug heat range changes, it is better to err on the side of too cold a plug. The worst thing that can happen from too cold a plug is a fouled spark plug, too hot a spark plug can cause severe engine damage! Megane Petrol MPV 1.6 16V 1598cc 79KW 107HP K4M 700;K4M 701;K4M 704;K4M 706;K4M 707;K4M 708;K4M 709;K4M 712BKR6EIX Iridium tip, this is an alternative replacement for the BKR6EQUP with the same heat range (6) BKR6EIX-11 (NGK-3764) a.k.a Iridium IX-11 - This is pregapped at .044 and should not be used in our cars. Adjusting a gap of this width is not necessary and should not be attempted.

I know that there are other choices than NGK however I do not have the correct part numbers / advantages / disadvantages again anyone else have more info ? Manufacturers don't seem to want us to be included in the ownership process; there seems to be a 'dark veil' surrounding the act of questioning their decisions: ...'filled for life'...'they all run hot'...'they all need premium plus fuel'...'manufacturer fluids only'...with dire consequences of warranty violation. NGK Iridium 8 (BKR8EIX) - Two steps colder (Run for 7k on Revo Stg 2+ under duress, removed due to stuttering idle and strong smell of unburned fuel and carbonation on rear of car)

Logan Petrol Saloon 1.6 (LS0L, LS09, LS0V, LS0P, LS18, LS1S, LS1V, LS1Y,... 1598cc 77KW 105HP K4M 690;K4M 694;K4M 696;K4M 697;K4M 698 NGK BKR6EIX Iridium Spark Plugs offer an enhanced spark over the standard items, and are a 'cooler' running plug than standard plugs on 2.0 Turbo Z20LEx models.

Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines The first generation R50, R52, R53 petrol models were fitted from the factory with the NGK: BKR6EQUP with the EXCEPTION of the R53 JCW this was fitted with the NGK: BKR7EQUP. Megane Petrol Saloon 1.6 16V (LA00, LA04, LA0B, LA11, LA16, LA19, LA1J, LA1K,... 1598cc 79KW 107HP K4M 700;K4M 701;K4M 706;K4M 708;K4M 709 LPG Laserline spark plugs feature an iridium tipped centre electrode and a ground electrode that contains a platinum chip. The tip of iridium is attached in a specially developed laser welding process patented by NGK. The advantage: These precious metals are resistant to unfavourable conditions in gas-powered engines. The spark gap remains virtually unchanged throughout the entire service life. Z14XE, Z16XE, Z16LET, Z16LER, Z18XE, Z20LET, Z20LEL, Z20LER, Z20LEH, X20XEV, C20XE, C20LET, X25XE, Y26SE, X30XE, Y32SE.

Some of you may well be saying, Why use it at all if what we see/read here is true? As touched upon earlier, Platinum and Iridium are used for their ability to provide longevity between service intervals and the resistance to wear, especially Iridium, that's it. My point is that a coil in those days would charge to about 20,000v before discharge and one of the advantages of electronic ignition was the much higher ignition coil voltage which meant you could run much wider plug gaps. The reason for this was the low gap and the high voltage meant that the point at which the spark became a flame was lower ie: lower revs. at 10000rpm a plug needs to put out a individual defined spark about 42 times per second and the smaller the gap the more likely the spark becomes a flame. Things are better today because in days gone by and engine would have 2 sets of points for 4 cylinders so the plugs would fire twice a rev once at BDC and once at TDC near enough so the plugs were firing at 80 times per second. In both cases these plugs had been factory-fitted and run for ~10 000mls. The electrode gap variation was varied so I (later) cleaned them with a stiff plastic brush and set them 'correctly' (imo) to 0.7mm (advised by a trusted tuning firm) to keep as 'spares'. Gaps ranging from 0.5mm to 1.0mm; can't be right, surely? Yes, in the past I've dutifully observed the recommendations about not questioning the fact that every plug has been specifically set up for my own personal needs BUT out of curiosity I actually 'interfered' by rolling my sleeves up and measured the spark gap variation on my last two N18 MCS.

The heat range numbers used by spark plug manufacturers are generally the higher the number, the colder the plug.The Best Plugs to use for 1.6 Turbo (Z16LEx/A16LEx/B16LER) and 2.0 Turbo (Z20LEx Family) engines, and suitable for many other applications. The spark plug can help maintain the optimum combustion chamber temperature, when a spark plug is referred to as a “cold plug” it is one that transfers heat rapidly from the firing tip into the engine cylinder head, which keeps the firing tip cooler. A “hot plug” has a much slower rate of heat transfer, which keeps the firing tip hotter. However, whilst I believe this may be the case for the 'old skool' turbo charging systems the TFSi system is a very different animal, and the way they system obviously mixes its fuel into the chamber means that maybe the heat issues may not be so prevolent. Question 4: is although the Iridium is seen to be the performance spark plug, the fitting of the Iridium spark plug itself will not give any power performance gain, many people report, that when they changed from Platinum to Iridium, they felt a livelier throttle response, in fact what you will have done is simply, renew old tired spark plugs with fresh new spark plugs, the ignition system now performing as it should do, thanks to the change of tired old, for new fresh, the material change in the case of Platinum to Iridium has played no difference! The other question (Q1) will be answered as you read on, Platinum and Iridium is used for it's hardness and resistance to wear, this gives longevity between service intervals, with Iridium being the harder of the two, All the above mentioned NGK spark plugs have a Platinum ring around the electrode tip, NGK also provide the following with an Iridium electrode tip, however be careful as the following have a tip projection of 1mm extra in length over the above!