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  1. #1
    rob2337's Avatar
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    SL 650 Spark Plug type

    Hello,

    Quick question, my girl firend uses my sl650 all the time, and she doesn't push the machine too hard (ie half throttle). Today I had a fouled plug when I checked them. The thermostat has been removed. I am going to replace the plugs soon, so should I look at running hotter plugs then the stock, or the stock ones.

    Thanks.


  2. #2
    no! run the 8's unless you have an on going problem! then post back because plugs are cheaper than holed pistons!

  3. #3
    rob2337's Avatar
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    so br8es or b8es plugs, right?

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    BPR8ES is what a 650 would use

  5. #5
    U want the R for resistor! and the p is projected tip that has little effect in my book but if u can find them I'd run what xlint said! Z

  6. #6
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    I don't know why the projected tip is recommended in earlier models. But it does change in 96 to the non projected Anyone know why?????.

  7. #7
    ph2ocraft's Avatar
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    The projected tip developes more heat within the combustion chamber. With poorer fuels and heavier work loads I think the BR8ES would be a better choice??
    I would think with a basically stock boat the BPR8ES will be just fine.

  8. #8
    I've run both and noted absolutely no differences in performance! on a side bar I am puzzled as to why some people who say running premix will foul plugs faster! I have never fouled a plug!

  9. #9
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Thanks for the explaination Ph20. Z, I think they are running the wrong gas/oil ratio when they say that. I've never fouled a plug either. And my girl and I did a LONG "no wake" river ride once. Around 1/2 hr each way, with no issues.

  10. #10
    Quote Originally Posted by xlint89 View Post
    . Z, I think they are running the wrong gas/oil ratio when they say that. .
    So your saying their stupid!

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