Thread: NGK Spark Plugs
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Old 09-21-2008, 10:41 PM
Unreal Unreal is offline
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Default Re: NGK Spark Plugs
Rob,
I went to install the R5671-7 plugs today, and they are the 5/8 hex version, not the 13/16 hex. I guess I shoulda checked them out when I bought them!!

Anyway, if I read your other post correctly, I should either use GR5 (stock 2851) or GR4 (stock 2635)

Did I read correctly? Would you recommend one over the other for my application?

Thanks,
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