Thanking you.
Spark plugs?
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d-mag
- Road Track Rally
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Spark plugs?
Can one (or more) of you learned gentlemen tell me the benefits of one step colder plugs in a turbo application and which ones you used.
Thanking you.
Thanking you.
MX5 Wanted. SE or NC (forced induction preferred 
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Garry
- Speed Racer
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Spark plugs?
Lowering the plug temperature can make a big difference to the combustion temperature which may help you run some more timing or reduce pinging.
I cant remember the full number but with NGK Mazda recommends a 5 or 6 plug for the stock cars, my SP goes best with a 7 plug, but I've heard of people using an 8 with no problems. With Nipondenso plugs the numbering is reversed ie the smaller the number the colder the plug. However if you go to cold you run the risk of plug fowling in stop start driving.
I cant remember the full number but with NGK Mazda recommends a 5 or 6 plug for the stock cars, my SP goes best with a 7 plug, but I've heard of people using an 8 with no problems. With Nipondenso plugs the numbering is reversed ie the smaller the number the colder the plug. However if you go to cold you run the risk of plug fowling in stop start driving.
Shiney black one with added red bits. Member of the fart club. Now with extra doof and Sunlong. - deceased and gone to heaven
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d-mag
- Road Track Rally
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Fatty
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Spark plugs?
yeah i had to go to colder plugs but i can't remember what brand etc... Al at max kirwan mazda sorted me out.
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