Brisk Spark plugs issues

[Bozo]

I bought some Brisk spark BR12ZC plugs on ebay, I experienced a misfire after about 300km and found that one of my plugs was arcing directly to the head through the ceramics. I just assumed that I might've accidentally cracked one using my spark plug tool. Since I never had this happen to me over 35 years of working on any engine I got a replacement. 100km after that another of my original 4 plugs did the same thing.
I must add the the suppliers from ebay site have been extremely helpful and between us we tried to sort out what has happened.

Details of my bike, 1990 3CV, original OEM ignition with Dyna 3ohm coils. Plugs are grey black (I was tuning the carbies after an engine rebuild). Since then I've been using my old (30,000km plus splitfire plugs) and I'll be using these till I get an answer for what is happening to my Brisk plugs.

If I can get this sorted out I would like to use these plugs again as I think (when they were going) they have noticeable gains.  
Hope the photo shows up if not stay tuned or give me a hint on how to add one

[rktmanfj]

http://www.fjowners.com/index.php?topic=341.0


I see you figured it out while I was typing...   

[Bozo]

http://www.fjowners.com/index.php?topic=341.0


I see you figured it out while I was typing...   

Thankyou my computer wiz son helped (I hate these Geeks dancing on a key board and losing me after two key strokes)

[Bozo]

I thought I'd better add this picture as well

[racerman_27410]

can you not get NGK spark plugs?

Kookaloo!


Frank

[Bozo]

racerman,
yes I can get NGK's but I thought I'd try Brisk. The fact that they failed has me in a spin. and the fact that I paid a lot for them makes me determined to find out if anyone had the same issues.

At this stage my suspicion is that they get extremely hot a eventually crack the ceramic but the supplier says others are using these with no bad effects.

As you suggest until then I'll use standard plugs.

Any Kookwilldo

[fj11.5]

never heard of that brand,  what are the benefits if any, , im using ngk iridium plugs , wish i had of bought a truck load of them as they were bloody cheap $2.50 each from a us ebay seller,  and he sold out awfully quick ,, and i gave the other four away  

[Bozo]

never heard of that brand,  what are the benefits if any, , im using ngk iridium plugs , wish i had of bought a truck load of them as they were bloody cheap $2.50 each from a us ebay seller,  and he sold out awfully quick ,, and i gave the other four away  

They're supposed to be the bees knees (read up on them, or look up on youtube) now I wish I stuck with the normal brand, as I have stated when they were working they were great with a noticeable (just) to my standard plugs.

[Arnie]

I'd never heard of Brisk brand spark plugs and was curious enough to just spend 1/2 hr viewing various Youtube vids.
Never heard any claim for improved performance.  Did see a brighter spark with a non-resistor plug vs resistor plug, but that was a foregone conclusion.
All plugs are not created equal, but I don't know what (if any) benefits these are supposed to have.
Platinum and Iridium plugs last longer.  In fact, that's almost certainly why they're being used in new cars.  EPA requires that cars meet emission standards after 100,000 miles with NO maintenance having been done to them.  And the smaller tip should have fewer instances of fouling.
So, What are the supposed benefits of these Brisk plugs?
My opinion is that as long as you're not having any misfire problems with standard NGK (or other major brand) plugs, there is no reason to spend more $$ for any of the super trick plugs, or the snake-oil plugs like splitfire (and probably Brisk)

Arnie

[SlowOldGuy]

I agree with Arnie.  I don't know of anyone that's ever complained about the stock NGK plugs.

All the plug has to do is spark.  Good coils will help that far more than any "trick" spark plug.

Looks like a waste of money given your current result.  You're attempting to solve a problem that doesn't exist.

DavidR.

[candieandy]

Hello All,

I can tell you all about this issue.

The Carbon Tracking is a direct result of the gap on the spark plugs. If you look at the pictures, you notice the spark plugs don't have any ground electrodes. The electrical energy from the coil found an easier path through the external insulator. The carbon track is the byproduct of the flashover and you need to replace your resistor covers(caps) as well, bc there is a carbon track on the inside of them too.

Andrew

[Bozo]

thanks CandieA, maybe resistive caps are the answer, combined with the huge gap between the ground point and electrode. The Brisk suppliers claims they never heard of this problem, thats why I'm writing to the forum to maybe get answers.

Arnie/ Slllllllllllow old guy, missing the point I'm making. I'm just wondering why they failed on me not why they are better etc. Its obvious after these failures I learnt my lesson (the grass is not greener........) I will be using the "normal plugs" in the future

[Arnie]

Bozo said, "Arnie/ Slllllllllllow old guy, missing the point I'm making. I'm just wondering why they failed on me not why they are better etc. Its obvious after these failures I learnt my lesson (the grass is not greener........) I will be using the "normal plugs" in the future"

I don't think that David or I missed the point.  You wanted "better" performance from your ignition system, so you bought and installed these "Brisk" plugs.  Once installed, they worked well for a bit, and then some of them failed. You tried, didn't get the hoped for improvement, and quit.  Que Sera.

What I was questioning is; What led you to believe you would get an improvement with these, and what improvement did you believe you'd get?
None of the Youtube clips actually stated why you should use these plugs or what the change in performance would be.  And the basic physics of spark plug operation is pretty well known.  You weren't complaining about any specific  problems  so I'm curious to know what encouraged you to try and fix this (non-existant for most us) problem?

Arnie
                                                                                                                                                                                                                                                                                                                                       

[Bozo]

Arnie, point taken, I do believe these plugs did show a difference, obviously its not a huge difference unless you do a direct comparison. The engine starts quicker and the engine itself is crisper. Is it huge? no but there is a difference you can spot.
The youtube pictures are tested under ideal conditions (pressure etc) but from what I can see when the plug fires (outside the motor) the spark is without doubt a bigger area spark coverage. So yes if these worked well I would use them that's why I wanted some answers.
Maybe one day someone will help me solve the problem and I will pull these out of the box and use them again. Until then the redback spiders can use them as their home.

[andyb]

Don't believe it.  You can easily fool yourself into almost anything.  Unless you can dyno for an improvement or measure an improvement, there is a shockingly small chance of there being one.

You fell for a big pile of marketing.  It's okay, happens to us all from time to time, now put proper plugs in, and don't overpay for plugs again.  The Brisk plugs are like a surface gap plug with a projected nose.... most people don't apparently understand that surface gap plugs don't work very well, and are only used in engines where there's no other choice due to clearance.

If they worked well and gave a more complete burn in a given engine, they wouldn't go for the aftermarket.  They'd be selling straight to the car manufacturers, because they'd improve mileage and make it easier to hit MPG goals for entire lines of cars.  It'd be incredibly lucrative for the plug makers to go this route, but they don't because the OEM manufacturers have tested this concept, and it doesn't work in the real world.