Autolite Iridium spark plugs. Opinions?
- tomsbadkz
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Autolite Iridium spark plugs. Opinions?
18 Oct 2016 12:33
I know that most use the NGK BR8ES spark plugs. Whats the advantage or disadvantage of running Iridium spark plugs?
1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
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- Nessism
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 13:10 - 18 Oct 2016 16:21
Iridium plugs are designed to last for a long time. There are different brands and grades of iridium plugs which vary in durability, so the devils in the details, but the best grades will literally run 100,000 miles in a car. The issue with running them in an old motorcycle is that most are resistor type, and you don't want to run a resistor plug if you are using a resistor type spark plug cap such as came on our bikes. And speaking of spark plug caps, you need to get plugs with the proper top to match with your caps. The OEM resistor caps need plugs with a threaded top, and not all iridium plugs are sold that way.
I bought a set of NGK Iridium IX : BR8EIX plugs for my bike and ran them briefly before realizing they are resistor type so they were removed. If you can use them I'll make you a good deal.
I bought a set of NGK Iridium IX : BR8EIX plugs for my bike and ran them briefly before realizing they are resistor type so they were removed. If you can use them I'll make you a good deal.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Last edit: 18 Oct 2016 16:21 by Nessism.
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- slmjim+Z1BEBE
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 13:13
Google is your friend. Decide for yourself.
www.sparkplugs.co.uk/iridium-spark-plugs
en.m.wikipedia.org/wiki/Iridium
Good Ridin'
slmjim & Z1BEBE
www.sparkplugs.co.uk/iridium-spark-plugs
en.m.wikipedia.org/wiki/Iridium
Good Ridin'
slmjim & Z1BEBE
A biker looks at your engine and chrome.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com/index.html/
A Forum tightly focused on all things Z1 and Z2.
A Rider looks at your odometer and tags.
1973 ('72 builds) Z1 x2
1974 Z1-A x2
1975 Z1-B x2
1993 CB 750 Nighthawk x2
2009 ST1300A
www.kawasaki-z-classik.com/index.html/
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- tomsbadkz
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 15:45 - 18 Oct 2016 15:45
I'm using Dyna S 8mm wires which work with standard plug tips. The BR8ES is a resister plug,right?
1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Last edit: 18 Oct 2016 15:45 by tomsbadkz.
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- SWest
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 15:55
Yes. Are the wires resistor too?
Steve
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- tomsbadkz
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 16:23
Running the DW800 wires
1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
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- zukdave
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 16:53
I think the only thing that'd run better would be the money leaving your wallet.
1980 KZ650 F1
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.
ZX750A1 motor.
Wiseco 810cc kit.
Zukiworks racing ported head.
VM 29 smooth bore's.
Dyna 2000 Ign. w/Dyna mini coil's
APE cylinder stud's and nut's.
APE valve spring's.
APE Track King clutch.
V/H KZ1000 sidewinder.
3.5x18 laced to a KZ1000 disk hub.
150/60/18 Shinko 006 Podium.
63" wheel base.
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- Nessism
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 17:49tomsbadkz wrote: Running the DW800 wires
With those wires you don't need resistor plugs.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know
1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
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- SWest
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 17:55
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- DFIGPZ
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Re: Autolite Iridium spark plugs. Opinions?
18 Oct 2016 21:26
I use them as much as possible.
1984 750 Turbo
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- tomsbadkz
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Re: Autolite Iridium spark plugs. Opinions?
19 Oct 2016 01:59
Cool. Thanks. Hey B. I'm still gonna get with you about motor. I just got back to work after a fall there breaking my tailbone and banging up my left elbow. Workers comp money isn't that good. Was off for 4 1/2 months. Ouch.

1977 kz1327
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Cavanaugh Head 38.6/33
38mm Flatslides
MRE racecut trans
300mm rear tire
Web Cams 435/465
Please Log in or Create an account to join the conversation.