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Thread: 1990 K 75 RT spark plug recommendations please

  1. #1
    Nick Kennedy
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    1990 K 75 RT spark plug recommendations please

    Hey all
    Whats the best plugs for my 1990 K 75 RT?
    Thats in advance!

    The book says Bosch X5DC
    The last ones I bought were made in India, not to excited about that..

  2. #2
    Registered User mlytle's Avatar
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    bosch x5dc.....
    Marshall
    92 K75s, 94 K75s, 09 K1300s

  3. #3
    3 Red Bricks
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    Pleasanton, Ca.
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    Bosch X5DC.

    Marshall, myself, and the BMW engineers agree.

    Do not put a resistor plug in a K75 as the wires have a gap built into them (that's why you can't test them with an ohmmeter).







    LONG MAY YOUR BRICK FLY!

    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  4. #4
    Nick Kennedy
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    OK
    Thanks boys!

  5. #5
    Nick Kennedy
    Join Date
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    Telluride Colorado
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    Lee
    Trying to learn something here.
    Why do they build those plugs wires with a gap in them?
    I would think that having a gap would use energy to create a spark to jump the gap.
    And where does the heat go the spark creates.
    Thanks in advance!

  6. #6
    Liaison 20774's Avatar
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    Kurt -- Forum Liaison ---> 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!

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