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What spark plugs?

Posted: Tue Dec 20, 2016 10:19 pm
by spetz
Hey guys,

What spark plugs would be best in a mildly modified FTO MIVEC engine that will be used on circuit?

Re: What spark plugs?

Posted: Wed Dec 21, 2016 5:33 am
by Vectose
Denso VK22

Re: What spark plugs?

Posted: Wed Dec 21, 2016 7:32 pm
by Daniel2019
Or BKR7EIX

Re: What spark plugs?

Posted: Wed Dec 21, 2016 7:38 pm
by spetz
Thanks guys,

Those are iridium plugs though which have the benefit of longevity but is this something I need for a circuit car that will see in reality only a couple of hundred kilometers a year?

Copper is supposedly better for performance as it is a better conductor.

Additionally what about the heat range and the gapping, would I need to do anything different than what Mitsubishi advises?

And lastly, best brand?

Re: What spark plugs?

Posted: Wed Dec 21, 2016 8:29 pm
by Vectose
Heat range: 7 (NGK) or 22 (Denso) for the MIVEC

Gap: 0.8mm

Brand is a matter of preference. I prefer Denso