NGK B8ES spark plug replacements: Autolite or Champion?

[Nessism]

MINE has pure copper stranded. One assumes a natural resistance but there no indication of anything more

Correct. Suzuki used non-resistor copper core plug wires on our GS bikes.

 

[rphillips]

Thanks for the correction, that just shows my old waning mind, I'd thought they were the nylon looking fibers & grey powdery stuff.

 

[Guest]

I guess another way around the “no more off the shelf B8ES plugs from autozone/oreilly/advance auto parts ” bugaboo is to run Dyna style coils/spark plug leads and switch to BR8ES. I see China is now counterfeiting the 5 ohm dyna coils and hawking them on eBay for $30 a set with free shipping. I didn’t see if they had the 3 ohm version but it wouldn’t be surprised if those are available too. It would be interesting to see how long they last versus the real deal. I mean coils aren’t exactly complex pieces

 

[Cipher]

https://www.aliexpress.com/item/1005...rch-mainSearch

VS.

https://fortnine.ca/en/dynatek-coil-12v-3-ohm-dc1-1

 

[Grimly]

I guess another way around the “no more off the shelf B8ES plugs from autozone/oreilly/advance auto parts ” bugaboo is to run Dyna style coils/spark plug leads and switch to BR8ES. I see China is now counterfeiting the 5 ohm dyna coils and hawking them on eBay for $30 a set with free shipping. I didn’t see if they had the 3 ohm version but it wouldn’t be surprised if those are available too. It would be interesting to see how long they last versus the real deal. I mean coils aren’t exactly complex pieces

Or just get a pair of MT-08 coils as fitted to umpteen million Hondas for decades.
My preference is to snag a triple set from a 1500 GlogWing and now I have a boxful of spares.
They're ~3ohms primary (so suit most GSs), have easily replaceable leads (you can fit the leads of your choice), and tough as old boots.
Best thing is the price. A triple set commonly sells for ~$25.

 

[pdqford]

It seems to me that if the spark jumps the gap, what difference does the extra voltage make?

Now if the extra voltage available lets you open up the spark plug gap, maybe that wider spark would ignite more fuel particles, resulting in more consistent ignition of the fuel charge? ?

Or perhaps with the original spark plug gap, the increased voltage would take longer to discharge the coil, therefore holding the arc longer , resulting in more consistent ignition? ?

Thoughts?

 

[Rob S.]

Side note: In the 1980's, my '73 Z1 (903cc) was burning oil like a mo fo. It very quickly fouled the plugs, and I was constantly cleaning and switching plugs. Then someone showed me these plugs with thin wire electrodes; I was told there was just no real surface for oil to accumulate, that they would fire in oil. And sure enough...

 

[Gorminrider]

Try NGK irridium. Pricey, but good plugs...
actually there's more to "resistance" than noise on am radios. Resistance on the secondary shapes the spark AND also reduces the back-splash of field collapse and recharge. Likewise on the primary coil. Suzuki's are "tuned" no doubt, but a resistor plug's resistance is not a super big deal if used. But, to stay "in tune" I guess you can just short out the resistor cap when using Resistor plugs....I wouldn't run less than Suzuki's, but more doesn't hurt an awful lot that I can tell.

 

[Grimly]

Another thing I've tried is projected nose plugs.
There was definitely a slight difference in a good way.

 

[Jerry]

I was unable to find the B8ES plugs for my 850 and used Champion N2C and they worked just fine. No prblems at all. I would have rather used NGKs but the Champions are the ones I found localy .

 

[bonanzadave]

all good today with the D8EA's

My owners manual says NGK D8EA or NIPPON DENSO X24ES-U

Gap is 0.6 to 0.7 mm (0.026 in)

 

[Guest]

Just from experience working on cars and bikes, autolite has a tendency to fail within a year with most of their stuff. I'd stay away and stick to ngk's

 

[habsdoc]

The plugs from the UK are genuine and come well packaged. They arrive rather quickly after ordering.

 

[KiwiAlfa156]

It seems to me that if the spark jumps the gap, what difference does the extra voltage make?

Now if the extra voltage available lets you open up the spark plug gap, maybe that wider spark would ignite more fuel particles, resulting in more consistent ignition of the fuel charge? ?

Or perhaps with the original spark plug gap, the increased voltage would take longer to discharge the coil, therefore holding the arc longer , resulting in more consistent ignition? ?

Thoughts?

A spark of a plug pulled out and observed is jumping an air gap of 0.7 mm in still air at 1 atmosphere (1 bar or 14 psi) At maximum torque rpm, the coils are trying to jump a spark in a hurricane of a dense wet fuel/air mixture compressed to somewhere in the region of 200 psi. It's here where the extra voltage makes a difference. You can light a fire with a match on a windy day, but you'll find using a blow torch is much more effective.

 

[93Bandit]

Someone here posted a similar ebay link to a seller with NOS ND W24ES plugs a while back. Myself, and I think, some others bought these and they are the real deal made in Japan ND's. They don't have a U groove, but that doesn't seem to bother NGK, since they don't have a groove either. Anyway, I'd get some of these before going Autolite or Champion.

https://www.ebay.com/itm/360780517093?epid=1630584072&hash=item540031cee5:g:ls0AAMXQL99Scryl

I ordered 2 boxes of these and one box had something spilled on it years ago that corroded all the plugs and deteriorated the box and plastic wrap. The other box and plugs are in perfect condition. I messaged the selling asking for a replacement box of 10. Hopefully he obliges.

 

[93Bandit]

The seller of those plugs messaged me back later in the day and apologized for the mix-up and has mailed me another box of plugs. Good customer service!