The motorcycle show near Lancaster pa was a hot spot for moped parts. Of other things I got a pile of HS spark plugs. The majority being of the competition variety. Has Anybody played with these?
Ngk competition spark plugs
Re: Ngk competition spark plugs
B7HS has been a pretty reliable plug for my so far! It’s a little on the hotter end and you can’t beat NGK quality
Re: Ngk competition spark plugs
Yo! It is like a 1/2 side gap. Those look amazing. I use to side gap every plug I ran. Pretty cool to see they made those like that.
Plus’s it looks like other changes too…..damn cool find. Let us know if they run good. (edited)
Re: Ngk competition spark plugs
CS is "low angle ground electrode"
Re: Ngk competition spark plugs
We cut the electrode back midway like that back in the seventies to gain a little racing along with indexing the plugs.. the purpose was to have less chance to jump to the side … never thought about it but it might be of some help on a 2 stroke
Re: Ngk competition spark plugs
Side gapping improvements are pretty marginal but if you’re min/maxing everything then hell yeah.
Also looks like these are a little higher compression (less cavity)
Re: Ngk competition spark plugs
I can see a bunch of changes, also interesting that they made the housing thicker and beveled out the housing around the electrode.
I've seen a few really high output 2t melt the ground electrode right off, maybe that's the idea here?
Re: Ngk competition spark plugs
i like the bevel idea, i mean the plug face is part of the compression dome. maybe it helps?
Re: Ngk competition spark plugs
Yeah it makes a lot of sense. I had a bike that ran e85 that I played with a bunch, getting the plug perfectly flush and side gapping. I think it helped but hard to say.
Re: Ngk competition spark plugs
It’s a spark plug! Don’t get your hopes up!
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