Maintenance & Technical > KX500 Original
Spark Plugs
monster malibu:
What's the difference between the BPR8ES and the BP8ES?
KXcam22:
The "P" stands for projected nose. On most 2 strokes the comustion chamber has enough of a pocket to give lots of clearance to run the "P" type. Hillclimber, the fine wire electodes like on the EV, EG, or EIX plugs run at a much, much higher temperature which is why they don't foul -they burn themselves clean. I found that my bike started noticeably better with the "P" plug, routinely 1 kick hot or cold. You should be able to get those at O'reily's also for $2. I never bothered with plug indexing on a 2 stroke since the intake charge mostly comes from the sides. Maybe I should. Cam.
93KX5Rider:
I run my kx with a NGK BR8EIX... I had BR7ES in it last winter when I put it away and I took it out and put in this new plug and it is running a lot better then it was before I put it away for the winter. I would recommend this plug.
RoostDaddy:
thanks for the replys, this was what I was looking for. As i said about the Projected plugs, there must be something that helps with firing. As for plug indexing, I've done it for years. Does it help, I couldn't tell you but It sure does make people look when you put a Sharpie mark on you plug and snug it up ever so carefully! Maybe its just some superstitious thing if nothing else.
Sofus:
I just got a new BPR8ES after reading this thread.
Oh my god, what a difference that made! The bikes starts much better, and pulls wheelies in 2 and 3 as well.
Now I just have a new problem, all those wheelies made my forks blow a gasket :( My "new" bike is in such a bad shape, I really have to do a full teardown/rebuild.
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