Many get stuck at the difficult decision deciding between these two types of plugs. These guys, even with their custom high output ignition systems making upwards of 60,000 volts (high current & mJpower output) run a gap as small as. Another example is ProMod turbo cars, which are boosted and running M1 Race fuel. We often see this multiply exponentially with power, and it isn’t uncommon to see 1000hp+ vehicles running a gap as small as. Therefore, higher voltage and a smaller spark plug gap will make your engine much happier, and safer. The increased cylinder pressure and dense A/F mixture makes it much harder for spark to penetrate. Almost all boosted set ups require a spark plug gap smaller than. This can include high compression builds, turbochargers, supercharged, and nitrous applications. More specifically, any engine with higher cylinder pressure. Onto our favorite types of motors here at ZZP – forced induction. You can get away with a larger gap in an N/A set up because the cylinder pressure is relatively low, reducing your chances of spark blowout. Larger gaps are usually more desirable in late model engines due to their high output ignition coils, and also lower compression naturally aspirated engines. The larger the gap setting on the spark plug, the higher voltage required for the spark to jump between the contact points. Spark will travel between the slight gap, igniting in your engine cylinder. In the simplest terms, the spark plug “gap” is referring to the closest point between the spark plug center electrode and the spark plug ground electrode. Either of these will weaken the ground and could lead to it breaking inside of your block. You should not adjust spark plug’s gap more than 3 times, and never exceed. Only force the ground electrode arm to the desired location, further away or closer to the center electrode. ***When adjusting the gap on your spark plugs, never pry, apply or exert any force on the spark plug center electrode, or center electrode ceramic insulator. If boost is 20psi or more, close the gap to. The Slingshot tends to idle and perform well overall and have a life with these plugs installed. They work constant and reliably at any power level. We recommend ONLY running the OEM ACDelco plugs for these cars. Gap to 0.028.ĪTS-V (Cadillac ATS-V, CTS V-Sport, LF4, LF3): OEM ACDelco iridiums or even better Denso iridium ITV24. LTG (2.0 Camaro 1LS, 1LT, 2LT, RS / 2.0 ATS Base, Luxury, Premium, Performance): Sonic/Cruze 1.4 (Sonic 1LS, 1LT, 1LZ/LTZ, RS | Cruze 1LT, Eco, 2LT, LTZ, RS): Turbo on e85 BKR7e gapped (tighten gap as boost goes up) rule of thumb is as large as you can go without breaking up. Turbo on 91-93: BKR8EIX iridiums for the best for performance. 032Ībove 500whp you can run the Denso race plugs we offer. No NGK or other brands as they cause misfires and do not run correctly. LNF / LHU (2008-2010 Cobalt SS-TC / 2008-2010 HHR SS / Sky Redline / Solstice GXP):ĪCDelco OEM GM plugs ONLY. Turbo/Highly modified: Autolite 103 or TR6/TR6IX. L67/元2 SC: Stock or lightly modified, TR55/TR55IX, TR6/TR6IX, Autolite 103/104 gapped at.
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