Here is the history. My plugs have always been mostly white, that’s my cat’s name (mostly white).I’ve tried regular, iridium, and side-cut plugs. I settled on the side-cut plugs because they seem to give me better response. I’ve up the jets to 135’s, 45’s, put in TBS needles with one shim, and the wrench at my Triumph shop snipped the needle springs. The exhaust was Thunderbike then changed to the short turnout Harley pipes. The air box was drilled out on the bottom with a K&N filter.
With this setup it runs good but the plugs only had a little bit of light brown where the dark brown is now, also at full throttle it would lose acceleration at about 90 mph but if I eased off the throttle then eased it back up it would accelerate again to 110 mph, probably more but that’s all I have room for around here til ya go into the curves.
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In January I put in the Freak with the 160 mains that comes with it. I didn’t change anything else cause I was trying to richin it up a little. It did get richer but still only on one side. The acceleration deal is still the same. I’ve only had one day to ride this year so everything here is based on that one days ride, about 150 miles of mostly speed limit riding. She seems to run good though.
Oh, these were new plugs before the Nor-East Rally, about 3000 miles on them. The light spot on the post is not wear it is a light gray spot.
I was wondering if I side-cut them correctly, maybe I cut them to short but I get the same pattern with the other plugs I tried.
I hope this gives ya a bigger picture of what my setup is.
Thanks for all remarks!
