04-24-2021, 09:53 PM | #1 |
Join Date: Apr 2021
Location: Mid-Michigan
Posts: 16
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NGK iridium
What are you guys setting your plug gap at? Is there a magical number other than factory spec?
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04-25-2021, 12:04 AM | #2 |
Join Date: May 2020
Location: Philadelphia
Posts: 115
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Use factory spec.
Also, not much to be gained by spending more on an Iridium plug. The basic NGK will serve you well. |
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04-25-2021, 12:42 AM | #3 |
Join Date: Dec 2016
Location: Argentina
Posts: 756
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Stick to factory specs, unless you modded the hell out of the engine.
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04-25-2021, 01:35 AM | #4 | ||
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,045
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The stock gap recommendation is stupidly small on the Hawks. It might be necessary because of the trash spark plug they come with. I run my NGK iridium plug (pre-gapped) at .9mm, which is .036" which is a decent amount larger than the stock recommended gap and it has never missed a beat, even with no upgrades to the coil or other parts of the motor. There is something gained by spending the extra couple of dollars on the iridium plug. Your bike won't outlast the spark plug. The only reason I can name to not run the iridium plugs is if you wanted or needed to run a non-reistor plug, as the iridiums are only sold as resistor type due to how conductive they are. It helps prevent overheating coils with a too fast discharge. If you want to avoid iridium plugs due to their crazy costs, I highly recommend an NGK 5829 aka DP8EA. As far as other advantages to iridium over copper or platium. Better charge retention Better thermal and corrosive resistance Lower working voltage requirement (more stable and consistent spark even if/when a coil might start losing it's ability to keep up at high RPM) Just off the top of my head at least. Two copper NGK plugs = the cost of one iridium plug, and that iridium plug will outlast those copper plugs 4 to 1, or better.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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04-25-2021, 02:29 AM | #5 | |
Join Date: May 2020
Location: California
Posts: 169
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2020 Boom Vader Gen 2 2019 CSC TT250 2021 Kayo Fox 70 |
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04-25-2021, 06:43 AM | #6 | |
Join Date: Apr 2021
Location: Mid-Michigan
Posts: 16
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I’ve seen mention of running up to a .034” gap but wanted to confirm with others with experience. I’ll try it at .034-.036 and see how it performs |
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04-25-2021, 08:41 AM | #7 |
Join Date: Mar 2020
Posts: 153
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Try the plug as-gapped, right from the box. Not really thinking I needed a new plug in my DF250RTG, I installed a new, standard-type NGK just because I had one. Like the iridium plug it was slightly over-gapped per the bike's specs, but, man! Since I put it in, the bike feels super-charged.
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04-25-2021, 01:44 PM | #8 | |
Join Date: Dec 2016
Location: Argentina
Posts: 756
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and those manuals are made in china What's the spec recommended for the CG in the US??? |
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04-25-2021, 02:42 PM | #9 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,045
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Quote:
The TT250 also stated this gap on their early instructions. https://www.manualslib.com/manual/16...0.html?page=70
__________________
Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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04-25-2021, 02:49 PM | #10 | |
Join Date: Dec 2016
Location: Argentina
Posts: 756
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06-17-2021, 01:04 PM | #11 |
Join Date: Apr 2020
Posts: 5
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Hi Dan,
I have a question that I hope you can help me with. The stock plug is a resistor type plug on a TBR7 and that the spark plug boot also contains a resistor? The claim that I read is that with the plug and spark plug boot both having a resistor that is is hard on the CDI and will make it fail early. What is your thoughts on this. Thanks in advance for your assistance! |
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