Farkling unbelievable spark plugs!

[Big1995]

I know it's an old thread and that unfortunately adidasguy won't answer...

But i bought a couple of these spark plugs some weeks ago and i had the same problems someone had.

I had some 22.5 pilot jets with just a lunchbox and the bike was too rich. I changed them for some 20, raised the needles a bit and put these new spark plugs.

Before the bike could start with no choke (but it would warm up slower) at the first hit of the button.
With the rejetting and the brisk spark plugs it takes some seconds to start.

Sincerely i can't understand how some people have a lot of benefits and for others they simply don't work properly.
I used a 16mm specific for spark plugs.

One thing i noticed is that when i opened the box there was a bit of black dirt on the end where the cap goes, on both the spark plugs.
Today i tried using some wd40 in the caps and it seemed to work a bit better but still not as good as some 12years "oem" plugs.

What should i do?

Thanks

[user11235813]

Reading the first post in this thread, sounds like a description of how my GS runs anyway. It has about 20k kms on it all standard jets and filters, and it too starts without choke and idles at 1100 to start then moves up to 1300 when warm, without any variation in the rhythm or frequency of firing. Just sayin'.

[fetor56]

I made an offer on ebay so if it's accepted we'll see how they stack-up against Iridium.....if not that good on the GS then my Yamaha TDM 900 takes the same plugs.
http://www.ebay.com.au/itm/2X-BRISK-BR12ZC-DCPR8E-N-DP8EA-9-DPR8EA-DUCATI-MONSTER-600-M600-600SS-620-695-/161039057137?_trksid=p2141725.m3641.l6368

Update....Best offer was accepted so I'll let ppl know later what i think.

[fetor56]

Received and Tested on 2013 GS500E;Conclusion:
Nice enough product,however i didn't notice ANY difference between the Brisk and NGK Iridium(in any category).......$ for $ the Iridium is better value.
Let's see how long they last.

[Joolstacho]

Let's clear up the common misconception about Iridium plugs. Many people assume that because they are more expensive that they perform better. Wrong.
They were designed for applications where access for plug changing was difficult (such as the rear bank of V6 transverse engines). The Iridiums last longer, and perform better at high milages where normal plugs would have deteriorated. Brisk sound pretty good though.

[Suzuki Stevo]

Let's clear up the common misconception about Iridium plugs. Many people assume that because they are more expensive that they perform better. Wrong.
They were designed for applications where access for plug changing was difficult (such as the rear bank of V6 transverse engines). The Iridiums last longer, and perform better at high milages where normal plugs would have deteriorated. Brisk sound pretty good though.

Not entirely true...Less voltage is required for a smaller center electrode and results in better ignitability. The smaller the electrode, the more centralized the electrical potential is around the electrode tip. The required voltage can be reduced because the level of the electric field is made stronger and local insulation (air gap and electrode surface oxidation) breaks down more easily. The bottom line is that it takes approximately 5,000 volts less to fire an Iridium spark plug versus a conventional platinum spark plug.

[fetor56]

Let's clear up the common misconception about Iridium plugs. Many people assume that because they are more expensive that they perform better. Wrong.
They were designed for applications where access for plug changing was difficult (such as the rear bank of V6 transverse engines). The Iridiums last longer, and perform better at high milages where normal plugs would have deteriorated. Brisk sound pretty good though.

My Iridiums were originally bought for my Yamaha TDM900 cos it takes about 1.25 hrs to change plugs,and i don't like repeating certain processes unnecessarily.
The GS also takes the same plugs so i got a good bulk deal when purchasing.
IF the Brisk last longer(or i see some other advantage) and it's cost effective to continue i'll be doing that.

[Rallyfan]

I've used iridium in apps where access was a hassle. The GS has easy access. I'll use stock especially if they're cheaper.

Spark plugs combine the technology of a lightning rod and a toilet. We can design them by hand or using the latest tech, but ultimately they're a conductor with a gap in porcelain. The last of the exciting developments took place decades ago. I suspect that by the time a true leap forward occurs again, we will have long abandoned the internal combustion engine entirely anyway.

I'd rate spark plug marketing hype as "meh" on the fun scale.

[twocool]

LOL...funny!  and well stated...

Plenty of other more important stuff to be worried about than spark plugs.

Cookie

I've used iridium in apps where access was a hassle. The GS has easy access. I'll use stock especially if they're cheaper.

Spark plugs combine the technology of a lightning rod and a toilet. We can design them by hand or using the latest tech, but ultimately they're a conductor with a gap in porcelain. The last of the exciting developments took place decades ago. I suspect that by the time a true leap forward occurs again, we will have long abandoned the internal combustion engine entirely anyway.

I'd rate spark plug marketing hype as "meh" on the fun scale.

[Big1995]

I tried again.
The last time it would turn on only after 4-6 seconds and a big backfire. Rubbish.
I remember that 1 month after trying these spark plugs the first time (3-4 months ago), my battery died. There was a lot of oxyde on the positive pole, when i tried to unscrew the bolt, the metal thing twisted and snapped. I then bought  a new battery
When the spark plugs came in they were dirty on the side where the cap goes.

Yesterday i cleaned them until they were shining and let them dry.
Today i tried them.
I can't add anything to the words of Adidasguy. They're just awesome and i can only confirm what he and other said. Turned on with no choke idleing steady at 1200rpms. With the iridium i had it would turn on too, but with a really irregular idle.
Turning the choke to 1 half the engine spins up to 4k rpms, i haven't tried more since it's cold and suzuki says to keep the engine between 2 and 3k.
This afternoon i'll try  to ride with them but i'm sure i'll have the same feelings other people had, and if so i won't add anything. Otherwise i'll let you know!

[Endopotential]

Sorry to revive an old and very beat-upon thread...

I was reading with interest and some amusement the different results people got.  Some swear they're a miracle product, while other actually had trouble with them.  Any scientific reason that could possibly explain this?

Let's say for sake of argument the Brisk plug do deliver a superior spark that results in better combustion.  Is there a possible scenario where this is good for some bikes and not for others?

For instance, if you run lean then a big combustion is good.  But if running too rich this could overwhelm things?

Or is a better spark always better regardless, notwithstanding engine longetivity etc???

[MichaelM3]

I'm happy to play in an old thread.

The Iridium NGK plugs (DPR8EIX-9) in my 2007 GS500 work like a treat. There is no science behind this statement just experience. I replaced old standard plugs with new Iridium one. My guess is that any new plug would out perform any old plug. However, the Iridium plugs did make a significant and long term difference to the performance of the bike - smoother acceleration, more consistent idle.  I'm on my second set now. I replaced the first set 'early' after only 22000 ks of use because I was heading of on a long ride.

The bike runs a little lean due, I think, to the drop in K&N air filter (yes, I'm running the restricter) and it returns ridiculously good fuel economy (3.7 L / 100 K average over 35000 ks). Not all, or much of this, can be attributed to the plugs but I really feel that they help.

Now I've read in this thread people talking about their bikes starting from cold with no choke as if this is a desirable thing. My limited understanding of combustion suggests that a bike with carburetors should required choke to start, otherwise it is running too rich. The role of the choke is to limit air flow thereby increasing the fuel / air ratio, in effect, making a richer mixture for the cold start. A bike with fuel injection, particularly if it's controlled by a decent engine management system chip, will start from cold because the EMS makes the fuel / air ratio richer. Any plug providing a good spark will start the engine. An Iridium plug simply makes a more consistent spark from less voltage producing better flame propagation because the electrode is smaller.

Anyway, they work for me and I really like the longer service interval.