Does anyone know if NGK makes racing spark plugs for Ford 2300 heads? I checked their website and could not find any. We have been running their plugs but they are listed as standard plugs.
Thanks for any help
TC65
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Results 1 to 6 of 6
Thread: Ngk spark plugs
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01-05-2015, 06:11 PM #1
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Ngk spark plugs
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01-05-2015, 10:36 PM #2
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You could try an NGK Iridium IX . NGK calls them "Extreme Performance".
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01-06-2015, 03:03 PM #3
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Dont know about ngk. But autolite has a dirert cross for the RS9YC in a racing plug. Its the AR103
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01-06-2015, 06:50 PM #4
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I think the ones we are using are the R5724-x. I know we went to a colder plug later in the season so without pulling the plug from the car I will not know for sure.
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01-08-2015, 07:29 PM #5
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Yes the NGK plug is R5724-8
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01-09-2015, 11:22 AM #6
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The R5724-8 is a projected tip plug.
If you have a head where the plug is close to the deck or piston, you can go with a NGK DCPR7E or NGK BR7EFS
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