If there are trailing numbers after the part number, then the gap should be specifically set as per the manufacturer's part code designation (e.g. 032"), Brisk Extra Turbo Spark Plugs and some others. The exception are for example spark plug part numbers with gap can not be changed such as Brisk Premium Multi-spark plugs, Brisk Premium LGS Spark Plugs, Brisk Premium LGS-T spark plugs (the -T indicate LGS style spark plug with a Tighter gap than standard LGS style spark plug and should be used on applications where the recommended gap setting is less than. If your spark plug part number has no trailing digits then (for most part numbers) it will be preset to this specification. Most Brisk and other manufacturer sparkplugs are preset to around 0.75mm - 0.8mm. Also, the spark plug gap should never exceed. The spark plug gap adjustment should not be changed more than 3 times and should not exceed. The force should be applied only on the ground electrode strap moving it closer or further away from the spark plug center electrode. The very most important rule when checking or adjusting spark plug gap is, to never pry, apply or exert any force on the center electrode, or center electrode ceramic insulator. Spark plug Gap setting and Gap cross-refference chart Tightening of spark plugs without using a torque wrench As always it is important to never exceed the required installation torque. In such a case the combustion area is not sealed sufficiently and heat removal into cylinder head does not work well enough. Sealing with a washer Spark plugs can never be mounted into cylinder head without a sealing washer. This goes for conical seat spark plugs only. It is important not to exceed the installation torque, however it is a good idea to torque the spark plug, loosen it a 1/4 turn and torque it again to ensure proper seating and adequate heat transfer. If the torque is exceeded, the spark plug shell can be stretched, thermal characteristics can be lost and there may even occur a rupture of the spark plug during its assembly or dismantling in the engine. The assembly of spark plugs with this kind of sealing requires an especially sensitive approach. Methods of spark plugs sealingĬonical seat Spark plug is sealed in cylinder head with a conical (tapered) seat. Spark plugs are constructed by using two different manners of sealing in cylinder head. Spark Plug Installation and Spark Plug Gap setting
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