what is the reason to go to a colder plug?
what is the reason to go to a colder plug? I was just wondering what is the benefit of a colder spark plug when going forced induction? and i see people usually set their plugs to a smaller gap also
The more boost/power you make the colder plug you need. Most FI car's up to 700-800 rwhp run a NGK TR6. Some run them higher then that and some go to a colder plug. Same thing goes with the gap, but ls1 coils are strong. I gaped them at .030 up to 1000 rwhp with no problems.
Colder plugs have less porcelain (the white part) than hotter plugs. The more porcelain the more a plug retains heat, in high HP cars where there is more heat it creates a hot spot in the cylinder which can lead to detonation. A hotter plug has a better lifespan, but obviously you want a colder plug that would retain less heat and NOT create that hotspot.
Gapping doesn't really have anything to do with the heat of a plug, but obviously a tighter gap under boost would lower the chance of spark blow out. It's different on every car though, for example, mine would blow the spark out at .030, but is fine at .028.
Gapping doesn't really have anything to do with the heat of a plug, but obviously a tighter gap under boost would lower the chance of spark blow out. It's different on every car though, for example, mine would blow the spark out at .030, but is fine at .028.
