I am starting with a few minor bolt on parts.....Better air filter and a straight 2 stage header. I am using stock carb. With these two items do you think I will need a bigger jet, if so what size? Also if I was to add the 1.2 Ratio Rocker Arms and 18 pound springs how much more hp would you expect?
save your money and buy a new carb . i used a #90 jet and i was not happy with it at all .the mid range was rough it was ok with the throttle wide open but cruising speed the carb seemed to brake up a lot, so i went back to factory jet and it is smooth all through the power band. but thats happened to me, you might be lucky . good luck 
save your money and buy a new carb . i used a #90 jet and i was not happy with it at all .the mid range was rough it was ok with the throttle wide open but cruising speed the carb seemed to brake up a lot, so i went back to factory jet and it is smooth all through the power band. but thats happened to me, you might be lucky . good luck
Not to mention picking up a 22mm knock from a chinese pit bike. I have seen 22mm carbs on pit bike sites for under $30. AGK is making a killing on that adapter and carb.
I say if your going to run a stock carb go for the adjustable jet kit from NR racing. This allows you to richen or lean as you need. It come with a 105 main jet with the kit. If you really wanna look stock get a 17mm bored out stock carb along withthe adjustable jet set up and I have been told this is plenty of air and fuel for a "bolted" motor. In other words stock cam/valves, 1.2's 26pd 8 degrees advance on the timing with a good header and this carb will be plenty.
I say if your going to run a stock carb go for the adjustable jet kit from NR racing. This allows you to richen or lean as you need. It come with a 105 main jet with the kit. If you really wanna look stock get a 17mm bored out stock carb along withthe adjustable jet set up and I have been told this is plenty of air and fuel for a "bolted" motor. In other words stock cam/valves, 1.2's 26pd 8 degrees advance on the timing with a good header and this carb will be plenty.
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Wicked MX - Pit Bike Performance Parts
i found a 22mm Mikuni on this site for $35.
it looks like they also have intakes for $13. does anyone know if those will work on a clone? if i pick up a carb from them, i'll probably buy one since they're cheap.
i found a 22mm Mikuni on this site for $35.
it looks like they also have intakes for $13. does anyone know if those will work on a clone? if i pick up a carb from them, i'll probably buy one since they're cheap.
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