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Alternatives to NGK R6725-11s for 650hp on C16

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Alternatives to NGK R6725-11s for 650hp on C16

Old 03-17-09, 04:19 AM
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Alternatives to NGK R6725-11s for 650hp on C16

As per my other post, I am having trouble getting hold of the NGK R6725-11 plugs.

Are there any alternatives for a 13B bridge port, C16, T51R SPL, 650whp, 1.5bar boost?
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Old 05-20-09, 02:10 AM
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Anyone?

What do you race guys use?
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Old 05-22-09, 06:18 PM
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I use Denso Iridium's (#35 I think)...not much benefit cost-wise and believe they are just as hard to get hold of, but they work well.
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Old 05-22-09, 06:40 PM
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www.sparkplugs.com
They have anything you need, and I've never found better prices.
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