Did a plug chop, how does it look?

bshee

New Member
Aug 7, 2013
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Australia
So this is not for a blaster but for a banshee. I did a plug chop while at my riding spot. How do they look?

There's also a weird marking on both plugs on one side.

My mods are k&n filter with lid on & no snorkel & a mid range exhaust.

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Anyone else a little curious about the black marks on the plug ? I'm not sure if its anything to worry about or not but plug chops are all about reading the signs and I would assume those black marks are a sign of something ! I have never had marks like that on any of my plugs ...
 
Swirls on plugs usually attribute to poor combustion chamber design.

Bump the mains up 2 sizes and plug chop again.
 
Swirls on plugs usually attribute to poor combustion chamber design.

So are you implying the swirl marks are normal?

Thought I'd post some more pictures up in different lighting cause in brighter lighting the plugs look lighter in color. How's these ones:

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