Nathan Munns - Spark plugs. Non resistor, Resistor. Conventional, Gold palladium, Platinum, Iridium
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- Опубликовано: 16 июн 2024
- The differences in spark quality with a basic conventional single electrode non-resistor and resistor plug. Gold Palladium and platinum fine wire types, And also the very latest Iridium TT (Twin Tip) by Denso.
As you would expect, with a conventional plug, non-resistor produces a stronger spark.
However, The fine tip of the iridium delivers a much more concentrated and intense purple colour. Especially the twin tip appears superior to all the others even though it has a resistor.
But these differences between any of the spark plugs would still be hard to detect in terms of increased engine performance. If your plugs and ignition system are in good condition you should be fine using any plug. But you may gain a more stable idle, faster engine starting and possibly a couple of horsepower with the Iridiums. Just don't expect miracles. 
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we did a dyno test with a ls3 engine and we tested standard copper spark plug and platinum spark plug and iridium and the copper cheap spark plug made 3 horse power more than the other 2 plugs
great video thanks
Wish the light was off for all tests,. Good video
Don't forget that this is in atmospheric pressure only. The spark can change dramatically under pressure.
Yes, the iridium type will outperform all the others due the lower voltage required from fine tip. A big advantage at high cylinder pressures
@@munnsey Absolutely. Over 30 years ago I was a motor mechanic and I had a Norton Commando which I'd tuned. The compression ratio was around 11:1. The mixture was always on the rich side, and I'd fitted electronic ignition. Even with new, Champion or Bosch plugs, I would sometimes have to kick start it 4 or 5 times, and I was a slim young man. I would be a heaving wreck. When I discovered the new gold palladium NGKs, it would always start first kick, and seemed to run much happier. That was a great practical demonstration. Like you, I bought some NOS gold palladiums from Ebay, and I use them in my BMW K bike.
Great Video!...what happens if you use a Nibbi racing coil with a non resistor cap and remove the resistor in the NGK Iridium spark plug???
good spark plug tunes
Interesting watch, but may I make a suggestion ? If you do another, could you place a bit of black card or something behind them so the spark will show up easier, as it is difficult to see against bubble wrap !
Yes ok. good point. Thanks
I want one of those. I think I could learn to play the "Tales From The Crypt" theme with it,🤣😂
Hey do a spark plug gap test... how much of a gap can a spark jump
Where did you get BCP7EV from?
I found them on ebay. New but old stock
Hi, Thank for sharing this. Question, does having a resistor bring down the noise, that it is supposed to help with?
Yes, dramatically.
@@munnsey can I put a resistor plug (iridium) if the owner's manual specifies NGK B7ES, for a 1980's kawasaki z440. Thank you
@@axelsaul4207 You sure can, And the iridium plug you need is NGK BR7EIX
@@munnsey wouldn't that affect the CDI in the long run? the fact that there is a resistor were it shouldn't be.
I can only get BKR7EIX here. Smaller 16mm hex nut, is that ok? thank you
@@axelsaul4207 It offers better protection than a plug without a resistor. But you can't use that BK plug. It's a projected design. You need to source the BR7EIX.
When fault finding my 2 stroke 70cc for misfiring at 25km/h, both plugs tested good for continuity and live spark when removed for fast kicking. As always in double checking and a good eye [not] , one plug indeed was a bright spark so it was promoted successfully with releaf [luck ]. So they can fail under load with a weaker but still ok spark , and the winning spark plug had a twisted earth pointing it's edge to the electrode . ls this smaller spark landing area responsible for stronger spark ? Can we snip a point on any the earth then ? Mmm...lol
Yes. Infact a known trick for racers is to cut back the electrode strap and shave the end to a sharp point. It works but of course that concentrated area will the wear fast and create a large gap. Fine if you want to change plugs often. Best option these days would be a switch to iridium twin tip type. Then you will get the same gain but the metals used on the tips are far more resistant to wear.
@@munnsey Very good .
Non resistor spark plug with non resistor cap with old motorcycle what can go wrong? 😃
Why the tape to hide name of tester ????
The tape is there to hide a really bright LED. The tester is unbranded but very cheap if you look for them on eBay
a barbecue 1.5 v lighter makes around 9000 volts , it does make a cheap plug tester .
Good video but bad videography. Thanks!