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Thread: sparkplug terminal covers

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  1. #1
    Registered User ezwicky's Avatar
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    sparkplug terminal covers

    hi all,

    for some this might seem an elementary question, but i wonder whether i should use the sparkplug terminal post caps or not. the things that screw onto the ends of the plugs.

    i just got a new set of plug wires and i don't want to waller out the mating part of the plug wire caps. but i did read somewhere, maybe in clymer's, about installing the screw-on post caps. so i'm not sure about the accepted procedure.

    thanks in advance for your advice,

    -eric
    BMWMOA #182796

    '76 R90/6

  2. #2
    Registered User kgadley01's Avatar
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    Some spark plug caps don't use the screw on part and some do. Thats why you can remove what you don't need. Without going to the garage, I don't think any of my bikes use the cap. You should be able to look up into the plug cap and tell if you need it.
    AKA SNAPGADGET
    Lifes too short to ride an ugly Motorcycle

  3. #3
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    If you're using the "right" NGK's - then NO, don't use.

    Good to see that you're making progress.

    Snowbum's articles are GOLD -- a little hard to plow throught, at times, but you should always cross-reference his info with that contained in your Clymer and Haynes. YOU MUST READ SNOWBUM VERY CAREFULLY, as one little word or phrase makes all the difference, and -- as you likely already know, both Clymer's and Haynes manuals have some outright errors (few), BUT -- they have many questionable "approaches" -- meaning, there are better (and often easier) ways of accomplishing your task. This is true, in part, due to the manuals attempting to cover several models of airhead, and they "forget" to point out that their advice ONLY applies to a particular model, or applies to a model with, for instance, points vs. electronic ignition or vice-versa.

    We are all SO lucky to have so many resources available for old airheads. Personally, my fear of screwing something up drives my multiple inquiries and detailed research!

    Keep on, and you'll have that 900cc's pumping power in no time.

    Walking Eagle

  4. #4
    Registered User lmo1131's Avatar
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    This is somewhat off the subject, but it is related to ignition system.





    If you're still using the OEM spark plug terminals (above) I'd strongly suggest replacing them with NGK part number LB05FP; they're about $3 each at any bike shop.



    Not "authentic" in terms of appearance, but they are excellent in the performance category. Totally water proof.
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  5. #5
    Luddite Looney wecm31's Avatar
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    Quote Originally Posted by Lmo1131 View Post
    Not "authentic" in terms of appearance, but they are excellent in the performance category. Totally water proof.
    I have used the NGK plug caps on my POS snowmobiles, Jap on Bombardier I can handle. Hey, you can't see 'em under the hood anyways...

    ..but on my Airhead?? Not a chance. I know I should rise above the fashion angle, but NGK and BMW won't play on my ride
    Gerald P
    The last thing I want to be is just like everyone else...
    1985 R80RT
    1969 Sport Fury Convertible

  6. #6
    Administrator 20774's Avatar
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    Quote Originally Posted by wecm31 View Post
    but NGK and BMW won't play on my ride
    Then what else is there? I can't recall anyone suggesting anything else. For my R69S, I opted for some bakelite brown caps that Vech sells...not original but far better than the metal ones that I think were first installed, like those the Lew showed.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

  7. #7
    Sir Darby Darryl Cainey's Avatar
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    If you're still using the OEM spark plug terminals, I'd strongly suggest replacing them with NGK part number LB05FP; they're about $3 each at any bike shop.



    I bought 3, 2 to use and 1 to keep as a spare.

    The BMW ones are hard to find is a NAPA Store on Sunday when you need to get home!
    Ambassador BMW MOA Ontario Canada
    President Niagara BMW Riders #298
    Knights of the Roundel #333
    1977 R100RS, (Retired) 1993 R100GS (just getting started)

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