Bearly Flying
Well-known member
Changing to a COOLER plug will NOT cause your engine to run cooler. A cooler plug only allows the tip of the plug to dissipate heat faster to the engine block allowing the electrode to run cooler.
Changing to a COOLER plug will NOT cause your engine to run cooler. A cooler plug only allows the tip of the plug to dissipate heat faster to the engine block allowing the electrode to run cooler.
bg2B: An NGK '8' is warmer than an NGK '9' -- that is, (for NGKs) a '9' will conduct more BTUs per unit of time into the head and cooling system than an '8'. Other brand numbering systems may be different.Oh, I see. So the CR8s running 25 degrees cooler than the CR9s in my GSXR750 race machine is a figment of my imagination, created by all the heat this summer at the midwestern tracks of the USA in the CCS region I race in. The temp gauge is all that's affected when I run a cooler plug and the engine itself is actually just dissipating heat differently? Hmmmm...Changing to a COOLER plug will NOT cause your engine to run cooler. A cooler plug only allows the tip of the plug to dissipate heat faster to the engine block allowing the electrode to run cooler.
With all due respect here, I'm not postulating or pontificating these temperature or plug #s. The literal difference in heat at the end of a 30 minute race is 25 degrees on the temp gauge; 190 degrees with CR8s and 215-220 degrees with CR9s. It is quite a difference not only in heat on the temp gauge but also in performance at the rear wheel. Something must be lost in the English translation, being here in the ether and all.bg2B: An NGK '8' is warmer than an NGK '9' -- that is, (for NGKs) a '9' will conduct more BTUs per unit of time into the head and cooling system than an '8'. Other brand numbering systems may be different.Oh, I see. So the CR8s running 25 degrees cooler than the CR9s in my GSXR750 race machine is a figment of my imagination, created by all the heat this summer at the midwestern tracks of the USA in the CCS region I race in. The temp gauge is all that's affected when I run a cooler plug and the engine itself is actually just dissipating heat differently? Hmmmm...Changing to a COOLER plug will NOT cause your engine to run cooler. A cooler plug only allows the tip of the plug to dissipate heat faster to the engine block allowing the electrode to run cooler.
Whether this (conducting more BTUs out of the combustion chamber) will result in a cooler running engine (or, coolness anywhere?) is, I think, still debatable......
There are reasons for the heat conductivity of spark plugs (generally, combustion related) -- but, I think, none of these reasons would be overall engine temperature? jmho :huh:
And, respectfully, neither am I doubting your observations -- just the efficacy of same. To wit: "190 degrees w/CR8s v/s 215-220 degrees/CR9s". The 'hotter' plugs appear to run 'cooler'; while the 'cooler' plugs appear to cause hotter running? Counterintuitive....? :huh:With all due respect here, I'm not postulating or pontificating these temperature or plug #s. The literal difference in heat at the end of a 30 minute race is 25 degrees on the temp gauge; 190 degrees with CR8s and 215-220 degrees with CR9s. It is quite a difference not only in heat on the temp gauge but also in performance at the rear wheel. Something must be lost in the English translation, being here in the ether and all.
with the 30+ different gas formulations you guys have in California I don't doubt you could see a 4-5 mpg difference just filling up in a different county than normal.So.. I've noticed a 4 - 6 mpg improvement using supreme... serious..
And, respectfully, neither am I doubting your observations -- just the efficacy of same. To wit: "190 degrees w/CR8s v/s 215-220 degrees/CR9s". The 'hotter' plugs appear to run 'cooler'; while the 'cooler' plugs appear to cause hotter running? Counterintuitive....? :huh:With all due respect here, I'm not postulating or pontificating these temperature or plug #s. The literal difference in heat at the end of a 30 minute race is 25 degrees on the temp gauge; 190 degrees with CR8s and 215-220 degrees with CR9s. It is quite a difference not only in heat on the temp gauge but also in performance at the rear wheel. Something must be lost in the English translation, being here in the ether and all.
Does one install 'colder' (racing) spark plugs to increase engine coolant temperature? :blink: :huh:
Me too....especially covered in cheese. They're tasty!I like turtles.
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