Which spark plug heat range should I run?
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Which spark plug heat range should I run?
JDM ITR, I have 2 sets of NGK-R Iridium plugs. One set is 6 and the other is 7. 6 is what was called for by the factory but would I see any benefit running the colder plug (7)?
Some people would go by the color of the insulator as to it
being too hot or too cold.-Bob
being too hot or too cold.-Bob
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Those test used to work good before additives in gas were put into place, still works to an extent. I can read plugs so maybe I should throw the 7's in there and see what they look like after some runs. When I pulled them out before the motor was even started they looked rich.
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They original plug was probably a 7 huh. Due to little higher compression and more aggressive fuel/timing maps than a usdm motor.
The 7 will use more fuel, run cooler, and help if you have any detonation.
The 7 will use more fuel, run cooler, and help if you have any detonation.
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Burning cooler will not burn all the gas in the combustion chamber.
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never thought of that lol I cant remember if the specs I was looking at was for JDM or USDM. Whoever owned it in Japan put in NGK Iridium R 7 heat range.
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BKR6E or BKR6EIX. Prefer the BKR6EIX but more expensive
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I just looked at the box I'm running BKR6EIX. I dont even remember how much I paid but with how damn expensive my motor is, $40 or so for plugs is nothing lol I wasnt about to take any shortcuts, I want the best in there. Well now I know I'm good with the plugs I put in. And I have an extra set of plugs for different mods later down the road.
