Thread: Let's talk spark plugs!
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Old 10-03-2012, 11:05 PM   #46
leung
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Quote:
Originally Posted by jamg View Post
so...

NGK BKR8EIX

OR

BKR7EIX

???
That obviously depends on how much power you're making. I believe its one step colder for every 100hp up. 6 is stock.
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