Hypothetical stick coil question

Discussion in 'GS Boxers' started by pcwirepro, Oct 1, 2012.

  1. pcwirepro

    pcwirepro Aspiring Adventurer

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    So I "know" a guy that bought an '04 1150GS (dual-spark) a few months ago. He's been pulling his hair out since he bought it thinking that something just wasn't right. Or so I've been told.... New plugs, TB rebuild, injector cleaner, injector soak, throttle cables, 3x valve adjustment, 4-5x TB sync all with little to no improvement. Today while driving home from work he remembers reading a thread about testing stick coils by pulling one or the other. Well as it turns out one is dead. Moved it to the other side (he did that is) to confirm and the trouble moved with the coil.
    So... how much improvement can he expect to see from a new coil or set of coils? Is performance affected more at higher RPM's and more noticeable under load as opposed to no load? Is BB the best (read cheapest) option for these?

    Thanks for your input. I'll pass on any and all of your comments.
    #1
  2. SR1

    SR1 Back in S. Korea

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    A. Shit. Load. DAMHIK

    :cry

    What is this? "BB" :cry
    #2
  3. Adventure Trio

    Adventure Trio Wandering

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    +1 :wink:

    Experienced this myself.

    -Terry
    #3
  4. pcwirepro

    pcwirepro Aspiring Adventurer

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    Too late to call and can't find them on their site. Hmmm.
    #4
  5. lp6

    lp6 Adventurer

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    night and day. during heavier acceleration above 4000 rpm, 3rd gear and up the bike will actually run rather than crap out
    #5
  6. def

    def Ginger th wonder dog

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    Think about this....a two cylinder boxer running on only one cylinder?

    You make the call.
    #6
  7. SR1

    SR1 Back in S. Korea

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    ahh, beemer boneyard. if the have them. might need to order through max like i did
    #7
  8. pcwirepro

    pcwirepro Aspiring Adventurer

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    Surely it isn't running on one cylinder if the secondary plug is firing. Could this have done damage over 2k miles?
    #8
  9. pcwirepro

    pcwirepro Aspiring Adventurer

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    $130/ea. at Max.
    #9
  10. def

    def Ginger th wonder dog

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    One cylinder's contribution to performance and power is severely compromised. You might as well be riding a 500cc thumper.

    As for damage, I can't say.
    #10
  11. scooteraug02

    scooteraug02 Dog Rancher

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    Try this, click here $80 two coils.


    #11
  12. Beezer

    Beezer Long timer

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    #12
  13. scooteraug02

    scooteraug02 Dog Rancher

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    Google stick coil for motorcycle under shopping. Japanese bike coils inexpensive. Find one similar to BMW.

    stick coil for motorcycle
    #13
  14. SR1

    SR1 Back in S. Korea

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    Yup, well aware of that, too. :cry

    The Ford coils (or whatever) are certainly an idea, though it requires some garage space and some time to do, neither of which I had when I was fighting my coils (others here can attest to that). I was fighting it all from Korea (where I am now) and getting the right or wrong harness/assembly through the mail is a bigger issue than just ordering the damned part from Max or whomever and sucking it up. Sure enough, once the bad coil was replaced it was like riding a brand new bike. 2 probems I see with BB on the coils. 1, you hope they have the one you need (primaries are the same but secondaries are left/right specific) and also 2 what if the one they have is also shit? Coils are difficult to test according to what I've read, so even though it passes current and shows good impedance throught the body it may still be crap. Now you have an $80 used coil and STIL need a new one. I don't like to gamble, even when I'm in Vegas. I just pulled out my wallet and ate it. At least the bike runs now.

    Eventually I'll probably switch to the car coils once I get to the US again.
    #14
  15. vagueout

    vagueout Long timer

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    Would not bother jerking around with used coils, these things have a finite life. New coils and you will love your bike again.:*sip*
    #15
  16. Beezer

    Beezer Long timer

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    " (primaries are the same but secondaries are left/right specific)"

    how so??? just curious
    #16
  17. pcwirepro

    pcwirepro Aspiring Adventurer

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    I see similarities there. Has anyone done this successfully?
    #17
  18. dirtsurfer

    dirtsurfer Thread killer

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    It will lift the front wheel with 2 functioning stick coils
    #18
  19. pcwirepro

    pcwirepro Aspiring Adventurer

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    It may come at a price (New clutch) but its going to need it sooner or later right.
    #19
  20. eric2

    eric2 ®egister this:

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    I liked the idea of the ford stick coils but didn't have time to hack around with the wiring. You can save a few bucks that way no doubt and some enterprising soul will make a million selling them. In the end though I bought a pair from Max, took a week to deliver and didn't get any m&ms either. Replaced the bad one and will pack the other one on trips just in case.

    Mine went out without warning and missed badly under load. Have a sneaking suspicion that since it was on the left side
    and using the sidestand a lot that maybe corrosion from water runoff might be the cause, but everytime I try to disassemble the old coil it just breaks.

    One coil stick at 120k miles is an acceptable fail rate.
    #20