New Plug Longer The Stock ?

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r00t4rd3d

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I got a new plug for my BGF 80 , its a NGK with number BPR6HS

The threads are about 1/4 inch longer then the plug that came with the kit. I set the piston to Top Dead Center and screwed the plug in and it seems to clear. I spun the rear tire a couple times but didnt start it and the gap on the plug didnt change so I dont think its gonna hit.

Is this normal ?


 
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r00t4rd3d

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Well I see the P stands for extended tip and I read that both will work but would like alittle clarification if anyone has it.
 
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r00t4rd3d

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Lol , I knew after I said screw it and just tried it someone would reply. After I ran it full bore I checked the gap and it didnt move.

Replacing the plug does make a difference !


zoooom !
 
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r00t4rd3d

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I think it really only helped me cause my kit plug was toast from doing the 16:1 break in. I imagine this is also the reason other newbs report a gain with a new plug also.

After running this plug I checked the color and it was alittle white-ish. Think I need to bump my main up. Is there a general number that works good for most ? Or should I just get the better carb ?



:)
 
Last edited:
GearNut

GearNut

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Aug 19, 2009
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It could be due to the heat range of the plug too.
A BP6HS is hotter than a BP7HS.
It does not affect the temperature of the combustion, but the ability of the plug to keep itself clean.
How many miles have you ran with the new plug?
I run them at least 5 miles to get a good color on them.
 
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