Banshee Bog

[ezuniga21]

I have a 2000 Banshee with full port cylinders, light flywheel, adjustable timing plate, cool head, vforce3 reeds, 35mm keihin carbs, and override transmission 2-5..... I recently did a tune up went from 91 octane to 110 (oil ratio 40:1,) also went from NGK(BR9ES) to NGK(BR8EG) cause someone told me to run it on hotter plugs, another thing is I put new carb kits, but since I did those changes the bike bogs a lot at the take off and when hitting high rpms in 3rd gear.. Some people say its not getting enough fuel some say its the sparkplug??? any suggestions...... 

[trickedcarbine]

What bore, stroke, dome cc's, & timing? If a motor was built to run on pump gas, just throwing race fuel with high octane will actually lose power. 

What jetting in the carbs?

[Ducman]

New carb kits?  Did you change some jets?

[Ayesully810]

Generally, running higher compression with race fuel calls to run a COOLER plug.  You should stick with the BR9ES plug (if your motor has high enough compression to run race fuel like tricked said)

 

[ezuniga21]

So I did some tuning to the bike and it’s running on br8es with 110 fuel seems to be running fine the bog isn’t there anymore but i think I’ll go down to 100 octane to not go through spark plugs like crazy 

[ginger]

octane should have no effect on how fast you go through plugs unless you are running way to hot.  

are you fouling plugs?  (making them black)