spark plugs BRISK & NGK equivalent?

stirlinggaz · World Chat Champion Joined: 22 Jul 2007 Karma :

Hi,
mate of mine has a chinese 125, engine is the 157fmi (I think, its dark out, & the bikes filthy so cant see much)
He says hes never serviced it since buying it (2nd hand) & has been treating it as a "disposable" bike. ie he bought it cheap & plans to use it daily till it falls apart or fails mot, whatever comes 1st. Then dump it on ebay for spares/repair.
hes asked me to service it because the only tools he has is a hammer & a bigger hamner Smile

plan is to change the oil for some supermarket 10w40 , clean any oil filter screen & change air-filter. As well as tighten chain up etc.

However, when I removed the spark pkug, I was a bit surprised to see it had no little metal bit on the tip, like every other spark plug I have seen.
Its a BRISK plug. Nothing like the usual Torch or LG sh*t you normally find in these chinese bikes.
So whats the story with the Brisk plugs?
are they supposed to look like that? no metal bit at the tip? If yes, why?
google a pic of a BRISK spark pkug & you will see what I mean, as im not explaining this very well Embarassed

what should I replace this plug with? NGK what?

TL/DR? what sparkplug for chinese 125 with 157fmi engine?
& whats the story with BRISK plugs?

cheers,
GAZ

NJD · World Chat Champion Joined: 11 Mar 2015 Karma :

NGK D8EA

stirlinggaz · World Chat Champion Joined: 22 Jul 2007 Karma :

So whats the story with these BRISK plugs then?
any good or are they likely to blow the bike up?
There seems to be a lot of weird claims on internet.....
cheers,
GAZ

temeluchus · World Chat Champion Joined: 01 Oct 2008 Karma :

Brisk plugs are surface discharge plugs and work just fine. Most of the extraordinary claims are hearsay but in terms of the basic igniting petrol, brisk are as good as ngk, denso, champion etc etc

If it runs fine i'd leave the plug in, otherwise you are just wasting money.
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Ridersofthest... · Banned Joined: 12 Jul 2015 Karma :

I only use NGK.

talkToTheHat · World Chat Champion Joined: 21 Feb 2012 Karma :

Less wear problems, spark gap remains unchanged forever.

Fouls more easily as spark is not concentrated on a single point, which is the idea of iridium plugs - the small electrodes stay hot and don't foul, irriduim resists spark erosion better than steel.

On the other hand surface discharge plugs are cheaper to make and require no exotic metals like irridium or platinum plugs.
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Bandit. does. everything.