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Thread: SL 650 Spark Plug type
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08-04-2007, 08:15 PM #1
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.
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08-04-2007, 08:28 PM #2
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no! run the 8's unless you have an on going problem! then post back because plugs are cheaper than holed pistons!
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08-04-2007, 08:44 PM #3
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08-04-2007, 09:07 PM #4
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BPR8ES is what a 650 would use
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08-04-2007, 09:10 PM #5
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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
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08-04-2007, 09:35 PM #6
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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?????.
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08-05-2007, 01:20 AM #7
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.
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08-05-2007, 04:24 AM #8
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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!
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08-05-2007, 10:03 AM #9
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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.
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08-05-2007, 11:23 AM #10
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