jdzx14
Expert Class
Posts: 412
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posted February 08, 2009 06:11 PM
Colder plugs for nitrous?
Hey guys, my bike is tore apart for some winter mods, powder coating wheels, spray bar, bigger bottle, ect....pretty much just re-doing the bike and the way it looks, but while i am waiting on my wheels to get back, i want to change the plugs, my bike has almost 10k on it, and its been ran pretty hard with nitrous, but was thinking about going a step colder on the plug, What do you guys think, and will it affect motor passes? What would be the number also, i know that NGK goes up to go colder but what would that be?
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2007 Black ZX-14
Lowering links, Brocks Strap Kit, Muzzy Full 4-2-1, No files, PC3, BMC Race filter, 6 inch extensions,16/44, Shinko 003 Ultra Soft..... SOLD!!!!!
  
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ratbyk
Expert Class
Posts: 179
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posted February 08, 2009 07:43 PM
quote:
Hey guys, my bike is tore apart for some winter mods, powder coating wheels, spray bar, bigger bottle, ect....pretty much just re-doing the bike and the way it looks, but while i am waiting on my wheels to get back, i want to change the plugs, my bike has almost 10k on it, and its been ran pretty hard with nitrous, but was thinking about going a step colder on the plug, What do you guys think, and will it affect motor passes? What would be the number also, i know that NGK goes up to go colder but what would that be?
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"Read" your present plugs. If they are not showings signs of over heating/blistering/bleached white or similar problems do not change heat ranges. If they are a soft chocolate/tan brown the heat range is right on. If sooted up or damp in any way they are already too cold. Don't change heat ranges simply for the "change is better" factor. Kawi have spent a lot of $ on development and they know better than anyone what works right on the 14. Better than anyone else. If you were running wide open for hours at a time then consider going a step colder but with normal operation of going up and down the rev range the original plugs are the ones you want.
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