Colder Plugs
Aug 16, 2011, 01:10 AM
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Colder Plugs
How do you know when your car needs colder plugs? Does the fuel charge preignite and create knocks? Or is there just less power in the upper rpms.
Aug 16, 2011, 08:17 AM
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A hotter plug will make more power, however it can cause detonation (knock).
If you run to cold of a plug, they will foul quickly as they cannot burn the carbon off of them.
Generally speaking, a hotter plug has a longer electrode and a colder plug has a shorter electrode. When trying to make power, you want to run the hottest plug possible, without causing knock. When shooting for 500 WHP, it's a good idea to put a half a step or a full step colder plug in. An added bonus with a colder plug is that it will also give you more clearance from the piston to the end of the plug.
TLDR; yes colder plugs is a good idea for that kind of power.
That's my .02 anyway.
-Bink
If you run to cold of a plug, they will foul quickly as they cannot burn the carbon off of them.
Generally speaking, a hotter plug has a longer electrode and a colder plug has a shorter electrode. When trying to make power, you want to run the hottest plug possible, without causing knock. When shooting for 500 WHP, it's a good idea to put a half a step or a full step colder plug in. An added bonus with a colder plug is that it will also give you more clearance from the piston to the end of the plug.
TLDR; yes colder plugs is a good idea for that kind of power.
That's my .02 anyway.
-Bink
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Aug 16, 2011, 10:46 PM
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I could've sworn I read on here in my searching that running a colder plug was generally a better option on the Evo 9?
I purchased a set to throw in when I get the car tuned... but after reading this I'm reconsidering I guess. I'm only running intake filter (cone), TBE, LICP and UICP and fuel pump and EBCS. Probably won't have the boost up higher than 22psi?
Where's the threshold? I mean... is there some place I can get, or can we put some information in here about when, and why you should run colder plugs?
I purchased a set to throw in when I get the car tuned... but after reading this I'm reconsidering I guess. I'm only running intake filter (cone), TBE, LICP and UICP and fuel pump and EBCS. Probably won't have the boost up higher than 22psi?
Where's the threshold? I mean... is there some place I can get, or can we put some information in here about when, and why you should run colder plugs?
Aug 17, 2011, 12:40 AM
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Noted, so running stock plugs gapped to smaller to prevent blow out combined with E85 to prevent knock should be good for 500+ correct? I'm going to do this lol
Aug 17, 2011, 05:50 AM
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Aug 17, 2011, 05:51 AM
#12
I could've sworn I read on here in my searching that running a colder plug was generally a better option on the Evo 9?
I purchased a set to throw in when I get the car tuned... but after reading this I'm reconsidering I guess. I'm only running intake filter (cone), TBE, LICP and UICP and fuel pump and EBCS. Probably won't have the boost up higher than 22psi?
Where's the threshold? I mean... is there some place I can get, or can we put some information in here about when, and why you should run colder plugs?
I purchased a set to throw in when I get the car tuned... but after reading this I'm reconsidering I guess. I'm only running intake filter (cone), TBE, LICP and UICP and fuel pump and EBCS. Probably won't have the boost up higher than 22psi?
Where's the threshold? I mean... is there some place I can get, or can we put some information in here about when, and why you should run colder plugs?
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