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  1. #1

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    Anything special about the SVHO spark plugs

    Just wondering if there is any difference between getting the plugs from a local auto parts store vs. the dealer. I see that the right plug is NGK LFR7A.

    http://www.ngk.com/product.aspx?zpid=30369

    I can get them locally at O'Rilleys but wanted to verify that there is nothing special about the Yamaha branded part. The part they have at is 92038. Looks like the same to me.

    http://www.oreillyauto.com/site/c/de...&keyword=92038

    Let me know.

    Thanks!

    Steve


  2. #2
    samy-gti's Avatar
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    I use LFR7AIX-IRIDIUM

  3. #3
    Guidoo's Avatar
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    Nothing special. Just match up the letters and numbers.

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  5. #4

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    Why do you use the Iridium version? Longer intervals between changes? Thanks!

    Steve

  6. #5
    samy-gti's Avatar
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    Exact

  7. #6

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    Do not bother with Plat or Iridium plugs. Copper still is the most conductive and since you are talking about an engine that is around water I would want to pull my plugs anyway to check the electrodes (see if you have an issue in a cylinder) and to make sure a plug does not seize to the head. Also with Iridium in a high boost situation the smaller tip has been an issue before where they broke off.

    Simple fact is that copper vs Iridium with the same temp rating the copper will have a stronger spark. and Plat is worse than Iridium for spark. Cars only use Iridium or Plat so they can increase the maintenance interval for plug changes. Copper is still the best long as you are willing to service them more often. And on the ski its not really that hard unlike some cars/trucks that can be a real PIA to do a plug swap (My hands cringe thinking of doing another f body plug change)

  8. #7
    AWA MEMBER
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    The SVHO plugs are one step cooler SHO is 6 heat range and SVHO is 7 heat range

  9. #8
    AWA MEMBER
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    Wonder if you could put the cooler plug in the 2 leaner cylinders

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