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-   -   spark plug type (https://www.racingjunk.com/forums/showthread.php?t=28818)

rich970 09-10-2010 02:03 AM
spark plug type
 
i have 440-1 indy heads 15to 1 comp flat top pistons. i was wondering can i use a extended tip plug. i use ngk R5671A-9 was wanting to try a R5672 Series plug. Thanks

mopar1968 09-14-2010 07:56 PM
No do not use extended type plug, I use RJ12YC Champion in mine :!: Extended tip might hit piston :!: JMO Mark

rich970 09-15-2010 04:32 AM
thanks Mark . i should have said projected tip plug ? do you use the rj12yc in the Indy heads ?


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