Ace83

iTrader: (6)

dont for forget your spark plug and gaps

cburglb34

wat about plugs and gaps? do i need colder plugs? i didnt run them when boosted and the previous owner of my kit didnt

crush02342002

iTrader: (2)

http://www.ngksparkplugs.com/tech_su...x.asp?mode=nml

good stuff there

crush02342002

iTrader: (2)

NGK Spark Plugs Heat Rating

The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type.

Heat rating and heat flow path of NGK Spark Plugs


Some basic structural factors affecting the heat range of a spark plug are:

Surface area and/or length of the insulator nose
Thermal conductivity of the insulator, center electrode, etc.
Structure of the center electrode such as a copper core, etc.
Relative position of the insulator tip to the end of the shell (projection)
The major structural difference affecting the heat rating is the length of the insulator nose. A hot type spark plug has a longer insulator nose. The insulator nose of a hotter spark plug has a longer distance between the firing tip of the insulator, and the point where insulator meets the metal shell. Therefore, the path for the dissipation of heat from the insulator nose to the cylinder head is longer and the firing end stays hotter. The insulator nose of a hotter spark plug also has a greater surface area that is exposed to more of the ignited gases and is easily heated to higher temperatures. A colder spark plug functions in an opposite manner.

The heat range must be carefully selected for proper spark plug thermal performance. If the heat range is not optimal, then serious trouble can be the result. The optimal firing end temperature is approximately between 500°C (932°F) and 800°C (1472°F). The two most common causes of spark plug problems are carbon fouling (< 450°C) and overheating (> 800°C).

Ace83

iTrader: (6)

good info chris!

ecko04

You're asking for detonation. With nitrous, anything less than 100 shot which should be all you're running on a stock motor anyway (75 shot) get a pair of 1 stop colder plugs that already come pre-gapped NGK BKR7EIX Iridium IX Spark Plug.

Also, check your plugs every now and then for any white build up which means you're running lean so your fuel jet needs to be increased or you could need slightly larger injectors.

crush02342002

iTrader: (2)

wideband would help...lol

ecko04

That too as long as you know what the readings mean lol

crush02342002

iTrader: (2)

werd