rx7store NGK plug set
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proper motoring
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rx7store NGK plug set
is there a difference between what type of plug needs to be in the leading spot vs. what type needs to be in the trailing spot? i recently purchased a "set" from rx7store.net and they both have the two blue rings with the "T" for trailing mark on them. what do i do now? i thought it was supposed to be marked L for leading and T for trailing.
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Originally posted by pugg57
you sure about that rynberg? sorry to second guess like that... i guess i'd feel better if i knew what the difference was. could you explain that to me?
you sure about that rynberg? sorry to second guess like that... i guess i'd feel better if i knew what the difference was. could you explain that to me?
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Originally posted by rynberg
The heat range for the stock leading is 7, the heat range for the stock trailing is 9. As you add modifications to the car, the 7 heat range will not be able to withstand the increased power the engine is making and therefore running a 9 heat range helps out. The higher heat range can mean that the plug will foul faster in stop-and-go driving and may have a rougher cold idle. To be honest, I didn't notice any difference going from 7 to a 9 plug. I'm waiting to see if they hold up better (stock plugs last 12k miles or less).
The heat range for the stock leading is 7, the heat range for the stock trailing is 9. As you add modifications to the car, the 7 heat range will not be able to withstand the increased power the engine is making and therefore running a 9 heat range helps out. The higher heat range can mean that the plug will foul faster in stop-and-go driving and may have a rougher cold idle. To be honest, I didn't notice any difference going from 7 to a 9 plug. I'm waiting to see if they hold up better (stock plugs last 12k miles or less).
It is very difficult to say what caused an exact detonation some times. This is just another way to assist in preventing that outcome.
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