NGK CR-8 EIX CR8EIX Spark Plug - white/silver

Product Information

Allows the use of an extremely small diameter electrode (0.6mm) without compromising the spark plug’s service life I don’t agree, the main reason for plugs to have a heat range is to keep um clean. When a plug runs at the “correct temperature” is far less prone to fouling, go to hot it can result in pre-ignition but if your plugs are fouling up, going up one on the heat range is advisable, misfiring is not good for engines. The image of the spark plugs above shows four common conditions that you’ll find your spark plugs in. From left to right the plugs are Normal, Rich, Lean and Very Lean. Full descriptions below. Iridium’s extremely high melting point is perfectly suited to today’s high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability. NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. Each and every one of their products are designed to meet the most rigorous standards and are the professionals' choice because of their quality and technical excellence. Their plugs can be found in use by teams in F1, WRC and MotoGP. Put simply, NGK genuine spark plugs are the workhorse at the heart of smooth-running engines around the world.

The metal electrode shape or material really has nothing to do with the heat range - but the precious metal, fine electrode design will last longer. This change of mind return policy is in addition to, and does not affect your rights under the Australian Consumer Law including any rights you may have in respect of faulty items. To return faulty items see our Returning Faulty Items policy. This nifty little tool only costs a few quid and will help you set the correct gap for your spark plug. However, modern plugs are almost all motorcycle-specific fit and so they come ‘pre-gapped’ and you won’t need to touch them. If you’re running a classic bike, you’ll probably need to set your gap and if your bike’s not running right, a gap tool can help you rule out a potential incorrect gap issue.I think your mechanic may be confusing two different possible issues. "Damage" and durability are two different things. I run NGK iridium plugs. I get them cheap because I am a Test Engineer for NGK (not bragging - just throwing that out there to lend credibility to my words.) A regular spark plug uses a copper central electrode whereas an iridium spark plug uses, you guessed it, iridium. The firing end ceramic insulator shape is what mainly determines the heat range of the spark plug. The heat range is the most important factor to consider when replacing your plugs. Just don't install a heat range hotter than what is recommended - you will risk pre-ignition.

If the plug is brown or light grey your can assume your engine is in good condition and the spark plug is functioning well. Even when a plug is in good condition small deposits will accumulate. This is normal. Rich Copper is generally seen as being the best metal to use in terms of conductivity but iridium plugs are seen as premium as they last longer than standard plugs and can be built with smaller tolerances. Iridium spark plugs also have lower voltage requirements, meaning they perform better when starting and idling and some manufacturers also claim they offer a better throttle response. The NGK Iridium IX Spark Plugs utilise a 0.6mm laser welded fine iridium tip which ensures high durability and a consistently stable spark along with a tapered ground electrode which minimizes electrical quenching effect. The longer insulator nose prevents fouling, the corrugated ribs on the insulator prevent flashover and a triple gasket seal eliminates combustion gas leakage. Torque the spark plug up to your manufacturer’s recommended settings. If you don’t have a torque wrench, then get the plug hand tight and then add a ½ turn for a plug with a gasket, and more like a ¼ turn for a tapered spark plug. Over-tightening can snap the spark plug – a nightmare.

\n\t\t\tNGK Iridium Motorcycle Spark Plug CR8EIX

The firing end ceramic insulator shape is what mainly determines the heat range of the spark plug. The heat range is the most important factor to consider when replacing your plugs. Just don't install a heat range hotter than what is recommended - you will risk pre-ignition. So what is the heat range of a spark plug. Is it related to the temp the spark plug can endure or the length of the spark or what?