Spark Plugs

[1970 XLCH]

Hi Guys , me again . I've been using Champion J12YC plugs in my "49 Pan ( 74 cu in , 6 volt ) forever . Just wondering if there is anything better out there ? Thanks, Mike

[T. Cotten]

Hi Guys , me again . I've been using Champion J12YC plugs in my "49 Pan ( 74 cu in , 6 volt ) forever . Just wondering if there is anything better out there ? Thanks, Mike

Trick question, Mike?

If both plug brands fire, how you going to know if one fires "better"?

A dyno I guess?

....Cotten

[Rubone]

Hi Guys , me again . I've been using Champion J12YC plugs in my "49 Pan ( 74 cu in , 6 volt ) forever . Just wondering if there is anything better out there ? Thanks, Mike

Champion built plugs for H-D for decades, they were identical to OEM except for the knurlinng pattern. Many folks have their own favorites, AC, NGK, Bosch, Autolite, etc. The only thing I can tell you is try others that interchange and see if you notice a "seat of the pants" difference.
So what oil do you use??
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[JoJo357]

Hi Guys , me again . I've been using Champion J12YC plugs in my "49 Pan ( 74 cu in , 6 volt ) forever . Just wondering if there is anything better out there ? Thanks, Mike

I run splitfire plugs Mike. You can definitely feel the difference from a performance aspect. Seems to start easier also. When i used to feel frisky, i would index the plugs~this always worked on any plug. Good Luck.

*M.A.D.*

[1970 XLCH]

Thanks guys ! Not a trick question , Cotton . I run 60 wt. Harley Oil

[T. Cotten]

Thanks guys ! Not a trick question , Cotton . I run 60 wt. Harley Oil

If you run harley oil, Mike,...

You might as well run harley plugs.

..Seems to start easier also...

If a bike always starts with one primed kick, M.A.D.,..

How will you know if a trick plug makes it start easier?

....Cotten