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Plug colour

Discussion in 'Norton Motorcycles (Modern)' started by Fast Eddie, Mar 10, 2019.

  1. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I’m more used to looking at plugs out of my older, oil burning ‘classics’.

    What say you fine fellows of these out of the 961?

    These were removed after a nice 50 mile ride, some brisk acceleration, 85mph cruise and a couple of miles through slow traffic to home.

    They are NGK Iridium, not the stock plugs.

    First two are from the LHS, second two are from the RHS...

    625F5A0B-FF67-4FC7-B212-C9FE99EA1D8D.jpeg F7E78AE1-9322-4C9B-9FFA-2694A8E433BD.jpeg 0C121747-E9C8-4CC0-A676-4C0E564D3C48.jpeg DE157709-FD9A-479C-9768-9385D1E4E36F.jpeg
     
  2. Raphi

    Raphi

    Joined:
    Aug 17, 2015
    I my opinion good looking, but I am no mechanic.
    Which plugs do you use:
    CR7EIX or
    CR9EIX?
     
  3. TonyA

    TonyA VIP MEMBER

    Joined:
    Jan 16, 2015
    IMG_0770.JPG IMG_0769.JPG IMG_0773.JPG IMG_0776.JPG Here are mine from August 2016 . IMG_0770.JPG

    I have the same ashy grey deposits .
     
  4. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    CR9EIX.
     
    Britfan60 likes this.
  5. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Mine look whiter than yours Tony. If I’d taken them out of my 850 Commando or Bonnie I’d be worried it was too lean.

    I guess it’s ok in this ‘modern’ engine!
     
  6. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
    Looking perfect!

    What you really don’t want to see are tiny aluminum specs from detonation from the piston.
     
    Last edited: Mar 10, 2019
    cash and Raphi like this.
  7. TonyA

    TonyA VIP MEMBER

    Joined:
    Jan 16, 2015
    Hello FE , Norton said the Euro 4 machines are run leaner than Euro 3 I think ? You have had your aftermarket exhaust map installed also correct ?
     
  8. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Factory open pipe remap, yes.
     
  9. TonyA

    TonyA VIP MEMBER

    Joined:
    Jan 16, 2015
    I also got a chuckle when you called it a modern engine.
     
  10. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    Hence the use of inverted comma’s ...
     
    Raphi likes this.
  11. Fast Eddie

    Fast Eddie VIP MEMBER

    Joined:
    Oct 4, 2013
    I changed the plugs for new ones, just thinking it’s the start of the season, so I’ll treat it!

    And waddya know... it’s starting better, much more instantaneous rather than having to crank over a bit.

    So maybe the plugs were starting to degrade?

    Only been in 1000 miles (inc track use) and these things are supposed to last yonks.

    I’m thinking to maybe try one grade cooler, a #10

    What do you fine fellows think?
     
    Britfan60 likes this.
  12. Voodooo

    Voodooo VIP MEMBER

    Joined:
    Aug 10, 2016
  13. Britfan60

    Britfan60 VIP MEMBER

    Joined:
    Jan 5, 2014
    I say I had 7,000 miles on my original plugs when I changed them. They looked and still worked fine, but wanted to give the iridiums a try. Wondering if you have a defective plug.
     

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