importkiller_SS

iTrader: (35)

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

black98ws6ta

iTrader: (77)

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.

AFASTYZFR1

iTrader: (55)

The smaller gap is so the boost doesn't blow out the spark and the colder plug is to prevent detonation.

veee8

iTrader: (40)

Fixed it for you. Very similar.

'Trust'

iTrader: (24)

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.

cablebandit

iTrader: (37)

There is a very important difference that most people dont realize. Im glad you pointed this out.

importkiller_SS

iTrader: (35)

THANK you all for the responses... it helps me out greatly!