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Spark plug ? #2478313 04/06/18 01:59 PM 04/06/18 01:59 PM
Joined: Jan 2003 Posts: 4,002 Joplin, Mo R rt66jim OP master
rt66jim OP master R Joined: Jan 2003 Posts: 4,002 Joplin, Mo	I have W2 heads and have been using RN9YC Champions. Would like to use RC9YC's for the smaller base. Is there any reason why I can't use them?

Re: Spark plug ? [Re: rt66jim] #2478332 04/06/18 02:43 PM 04/06/18 02:43 PM
Joined: Sep 2014 Posts: 4,457 Washington M madscientist master
madscientist master M Joined: Sep 2014 Posts: 4,457 Washington	Originally Posted By rt66jim I have W2 heads and have been using RN9YC Champions. Would like to use RC9YC's for the smaller base. Is there any reason why I can't use them? Nope. I no longer use a 13/16 hex plug unless I absolutely have to do it. The C and the N are exactly the same except for the hex. Your life will be much easier with the C plug, especially with the W-2 head. The W-5 was even tighter. Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston

Re: Spark plug ? [Re: rt66jim] #2478340 04/06/18 02:58 PM 04/06/18 02:58 PM
Joined: Jan 2003 Posts: 4,002 Joplin, Mo R rt66jim OP master
rt66jim OP master R Joined: Jan 2003 Posts: 4,002 Joplin, Mo	Thank you for your quick reply. Jim

Re: Spark plug ? [Re: madscientist] #2478389 04/06/18 04:53 PM 04/06/18 04:53 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	So you can use the 5/8 hex plugs anywhere you are using the 13/16's. Correct heat range of course. Good info Madscientist! live every 24 hour block of time like it's your last day on earth

Re: Spark plug ? [Re: rt66jim] #2478568 04/06/18 11:49 PM 04/06/18 11:49 PM
Joined: Jan 2003 Posts: 20,748 A collage of whims topside Too Many Posts
topside Too Many Posts Joined: Jan 2003 Posts: 20,748 A collage of whims	Yup, the smaller hex is easier to deal with, more room at header flanges. Been using C59Y/C61Y (YC has different tip) race plugs for years, kinda spendy though. Batten W2s. I also use the 5/8 hex on the BB motors, easy choice since their heads are usually aftermarket aluminum.

Re: Spark plug ? [Re: topside] #2478675 04/07/18 03:41 AM 04/07/18 03:41 AM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	^^^ I'm sold. live every 24 hour block of time like it's your last day on earth

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