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bigboat28

04-16-2015 02:39 PM

HP500 spark plugs

What are you guys running for you spark plugs in your carbed 500's? I was reading and they talked about 3 different kinds.

getrdunn

04-16-2015 05:12 PM

Curious If you show mr43t or a 42?

endeavor1

04-16-2015 11:53 PM

Mr 43t.

BUP	04-17-2015 12:11 AM

NGK BR6FS stock # 4323 - gapped at .040

You also have more options with NGK V- power and Racing V- power along with Iridium BR6FIX stock # 2318 gapped .040

Racing V- power R5673-6 stock # 2405 - some people will say R5673-7 that is one heat range colder compared to BR6FS according to the NGK charts.

Standard V - power YR5 but these are one heat range hotter. So really not that recommended unless needing a hotter heat range and want standard V-power plug..

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