What's your Spark Plug choice for the LC4?

Discussion in 'Thumpers' started by meat popsicle, Feb 6, 2005.

  1. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    #1
  2. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    #2
  3. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    conservative. roger that. :nod
    #3
  4. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    05 KTM 640 Adventure 640
    Spark Plug Part No. Stock No. Plug Gap
    Standard DCPR8E 4339 .032


    05 KTM 640 Adventure 640
    Spark Plug Part No. Stock No. Plug Gap
    Iridium DCPR8EIX 6546 .032

    There is the Iridium IX part number for the 640 Adv :D
    #4
  5. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    Bored meat? What's next, a thread on grips? No, that would go several pages. How about anti-freeze? Nope... same as grips. Ah... air filters? No... actually, spark plugs was a good choice for early thread death syndrome. Good job. :thumb

    (Now, watch this thread go 4 pages, just to prove me wrong) :lol3
    #5
  6. ChrisC

    ChrisC Amal sex?

    Joined:
    Feb 25, 2003
    Oddometer:
    6,325
    Location:
    Prescott, Arizona USA Earth
    Meat...can you convert that Iridium NGK p/n to Lodge p/n? I like the pink insulators.... :evil :evil :evil

    CC
    #6
  7. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    Isn't that a what your wife calls you? The Pink Insulator? :wink:
    #7
  8. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit

    you said this once before... now what was that thread? :wink:

    NGK is makin some big claims for this new plug, and since they are not a fly by night op somewhere in Arkansas I figure they are worth entertaining.
    #8
  9. ChrisC

    ChrisC Amal sex?

    Joined:
    Feb 25, 2003
    Oddometer:
    6,325
    Location:
    Prescott, Arizona USA Earth
    Changing spark plugs and hoping for performance improvements is like changing underwear and hoping for no racing stripes.... :huh
    #9
  10. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    IMO, The whole deal with precious metal plugs is durability and lower electrode resistance values. Longer service life and resistance to fouling under hard conditions... high compressions and so forth. No plug that I am aware of can in and of itself, increase voltage at the electrodes.

    My favorite spark plug "claim" is for the split electrode plugs... electricity follows the path of least resistance, it doesn't care if the electrode is 'Y' shaped, 'W' shaped or shaped like a large mouth bass... the spark will jump to the path of least resistance.
    The only advantage I can think of... and a small one at that, is that the spark is more exposed or unshielded to the combustable mix on a 'Y' plug than a conventional plug.
    #10
  11. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    :lol3
    #11
  12. Scoot Jockey

    Scoot Jockey BST Faithful

    Joined:
    Feb 16, 2004
    Oddometer:
    73
    Location:
    Salzseestadt
    Well if you're having a spark plug thread, I guess I should throw this in:

    http://www.briskplugs.com/products.aspx

    http://www.monomaniacs.nl/mm/ttt/brisk/index.htm

    The supermoto/duke forum went over these a while back, since they do make one that will fit the lc4. The initial tests were positive, and riders noticed a performance gain, but others were concerned that the path of least resistance for the spark would end up being straight to the piston face. The design is interesting, but I am perfectly happy trying to increase performance using other, more sound methods, like shaving my legs, and using high tech lubricants that were developed for the space shuttle.

    Regards,

    Scoot Jockey
    #12
  13. ChrisC

    ChrisC Amal sex?

    Joined:
    Feb 25, 2003
    Oddometer:
    6,325
    Location:
    Prescott, Arizona USA Earth
    Now you're talkin' Creep's language... :ymca :ymca :ymca
    #13
  14. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    so maybe the "iridium" has a lower resistance than platinum which is lower than copper... :dunno that would open things up right?

    yeah i remember the "split-fire" plugs... pretty dang funny :nod
    #14
  15. meat popsicle

    meat popsicle Ignostic

    Joined:
    Feb 9, 2004
    Oddometer:
    14,552
    Location:
    Circumlocution Office of Little Dorrit
    somebody around here said those things are not too reliable... but OBVIOUSLY we have plenty of unsubstantiated opinions around here... :lol3

    :pot
    #15
  16. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    I took a look at the info provided. Not very objective or scientific... seems like some guys with a bike, a dyno and some spark plugs. Not enough supporting data to validate anything.

    I'm not poo pooing the evidence provided as pure bull shit... but pure enough to disregard as being useful.

    Sorry, I'm to much of a skeptic to believe any fancy claims offhand.
    #16
  17. creeper

    creeper Still alive...

    Joined:
    Dec 13, 2003
    Oddometer:
    10,718
    Location:
    Puget Sound
    I don't know the resistance values of the various precious metals under the pressures developed in a typical combustion chamber... but I imagine iridium is right up there... and pretty resistant to the typical erosion encountered as well.
    #17
  18. ChrisC

    ChrisC Amal sex?

    Joined:
    Feb 25, 2003
    Oddometer:
    6,325
    Location:
    Prescott, Arizona USA Earth
    Are we at 4 pages yet? :rofl
    #18
  19. Loadedagain

    Loadedagain making chips

    Joined:
    Jan 1, 2003
    Oddometer:
    26,763
    Location:
    West Vancouver, BC
    this baybee is going for 4 :D

    [​IMG]
    #19
  20. BLUE(UK)

    BLUE(UK) Long timer

    Joined:
    Dec 2, 2004
    Oddometer:
    3,442
    4 what?? cents??
    #20