Iridium vs oem spark plug

  • kevski
  • kevski's Avatar
  • Offline
  • User
  • Posts: 431
  • Thanks: 160

Re: Iridium vs oem spark plug

06 Nov 2024 22:16
#905842
Bp8es also work very well, slightly longer tip is the only difference, been using them for around 20 year's 

Please Log in or Create an account to join the conversation.

  • Maxbou92
  • Maxbou92's Avatar Topic Author
  • Offline
  • User
  • Posts: 178
  • Thanks: 6

Re: Iridium vs oem spark plug

07 Nov 2024 05:10
#905845
Does the denso will be ok instead NGK?
Kz750e 1980

Please Log in or Create an account to join the conversation.

  • Nessism
  • Nessism's Avatar
  • Offline
  • Sustaining Member
  • Posts: 7533
  • Thanks: 2895
The following user(s) said Thank You: howardhb, Maxbou92

Please Log in or Create an account to join the conversation.

  • slmjim+Z1BEBE
  • slmjim+Z1BEBE's Avatar
  • Offline
  • User
  • Enjoy Life! IT HAS AN EXPIRATION DATE!
  • Posts: 1267
  • Thanks: 768

Re: Iridium vs oem spark plug

07 Nov 2024 06:47
#905848
From NGK:
www.ngk.com/how-long-do-ngk-iridium-plugs-last

From Denso (ND):
www.denso.com/global/en/products-and-ser...ies/plug/basic/life/

We've run ND W24ES-U in our Z1's for decades.  They run fine.  Re-gap a few times & they last a very long time.  We often see them languishing at swap meets because people don't know them or the ND brand.  We snap up every ND W24ES and ES-U we see.

We've also seen sets of NOS Splitfire SF 406C plugs gathering dust at swap meets.  Same threads, reach & heat range as NGK B8ES.  Have a set in a Z1 now w/ 3,000+ miles on them. They run fine.

Beware of counterfeit NGK plugs.  They're more common than one might think.
www.ngkntk.com/newsroom/blog/emea/fake-or-not/

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
An enthusiast's forum focused exclusively
on all things Z1, Z2 and KZ900.

The following user(s) said Thank You: daveo

Please Log in or Create an account to join the conversation.

  • Maxbou92
  • Maxbou92's Avatar Topic Author
  • Offline
  • User
  • Posts: 178
  • Thanks: 6

Re: Iridium vs oem spark plug

07 Nov 2024 07:06
#905851
All right!! So iridium will not improve nothing at all ?! Thank youu
Kz750e 1980

Please Log in or Create an account to join the conversation.

  • zed1015
  • zed1015's Avatar
  • Offline
  • User
  • Posts: 3086
  • Thanks: 1639

Re: Iridium vs oem spark plug

07 Nov 2024 07:26 - 07 Nov 2024 07:27
#905852
All right!! So iridium will not improve nothing at all ?! Thank youu
Just use the correct NGK or equivalent recommended grade non resistor plug.
The only improvement needed to the stock points ignition system would be an electronic upgrade such as Dyna 'S' and higher output coils to counter spark suppression at higher rpms and cylinder pressures.
Our 250hp turbo drag bike runs just fine on NGK B9ES plugs.



 
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





Last edit: 07 Nov 2024 07:27 by zed1015.

Please Log in or Create an account to join the conversation.

  • Maxbou92
  • Maxbou92's Avatar Topic Author
  • Offline
  • User
  • Posts: 178
  • Thanks: 6

Re: Iridium vs oem spark plug

07 Nov 2024 07:33
#905853
Do I need to remove cap resistor too? I appreciate !! Thank youu
Kz750e 1980

Please Log in or Create an account to join the conversation.

  • zed1015
  • zed1015's Avatar
  • Offline
  • User
  • Posts: 3086
  • Thanks: 1639

Re: Iridium vs oem spark plug

07 Nov 2024 07:39 - 07 Nov 2024 07:54
#905854
Do I need to remove cap resistor too? I appreciate !! Thank youu
You should only ever run one source of resistance if any such as a resistor cap or a resistor plug.
Two sources of resistance such having both a resistor cap and a resistor plug will cause weak spark and poor running.
Resistance is only needed to dampen radio interference for TV's, Radios and sensitive onboard electronics so not really needed at all unless you have some sort of onboard computer that may be affected.
Most modern vehicles use resistor plugs due to the abundance of electronic devices and sensors fitted. 

 
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





Last edit: 07 Nov 2024 07:54 by zed1015.

Please Log in or Create an account to join the conversation.

  • Maxbou92
  • Maxbou92's Avatar Topic Author
  • Offline
  • User
  • Posts: 178
  • Thanks: 6

Re: Iridium vs oem spark plug

07 Nov 2024 07:44
#905855
All right I will remove resitor cap !!
Kz750e 1980

Please Log in or Create an account to join the conversation.

  • F64
  • F64's Avatar
  • Offline
  • User
  • 81-KZ440D2
  • Posts: 1120
  • Thanks: 403

Re: Iridium vs oem spark plug

09 Nov 2024 17:06
#905907
Yeah, the precious metals just help the plug to last longer.
Which helps if your plugs are hard to get at in your car.
You'll have to only change them every 100,000 miles if you get the iridiums.
No need to have them on a motorcycle.
 
81-KZ440-D2.
Louis Dudzik's GM HEI ignitor conversion installed 2015 s3.amazonaws.com/gpzweb/Ignition/GPZgmHEImod.html
Motogadget m-unit blue installed 2017.
LIC, NY
The following user(s) said Thank You: Wookie58, Maxbou92

Please Log in or Create an account to join the conversation.

Powered by Kunena Forum