roosthrower Posted February 2, 2004 Report Share Posted February 2, 2004 why go bigger? I've heard that the make main jets for the stock carb past 600. anyone know the answer? Quote Link to comment Share on other sites More sharing options...
fixitrod Posted February 2, 2004 Report Share Posted February 2, 2004 If you have the engine to pull the air mixture in, they pull the right mixture. The correct mixture for air/fuel is 14/6 or 14/7. If you are jetted correctly with a small carb, you will only be able to pull so much air and adjust the jet accordingly. If you can pull the extra with a modded motor, you want to keep the right mixture rather than flood the motor with fuel. Quote Link to comment Share on other sites More sharing options...
sredish Posted February 2, 2004 Report Share Posted February 2, 2004 If you have the engine to pull the air mixture in, they pull the right mixture. The correct mixture for air/fuel is 14/6 or 14/7. If you are jetted correctly with a small carb, you will only be able to pull so much air and adjust the jet accordingly. If you can pull the extra with a modded motor, you want to keep the right mixture rather than flood the motor with fuel. what he said. You can only pull so much air through a 26mm, so your air/fuel mixture will only be so great. Move up to a 35mm and your pulling that much more air, which allows you to pull that much more fuel. Make sense? Quote Link to comment Share on other sites More sharing options...
Banchetta Posted February 3, 2004 Report Share Posted February 3, 2004 IF, and I stress IF your motor can pump enough air for larger carbs, then you can benefit, like others have said, the 26mm can only allow so much air through the carb at a certain speed or "velocity"...Too much velocity will restrict cfm or amount of air going through at a given second or minute..A larger carb will allow more air w/ less velocity or "speed" which causes restriction....BUT....a carburator requires so much velocity to properly work and be efficient since the velocity is what pull the fuel out from the bottom of the carb and into the motor.....So not enough velocity will hurt efficienty and lose hp, throttle response and low end....so there is a fine line to how large of a carb you can go before going the other way.....Kinda like jetting, too lean or too rich and you'll lose hp......exept carbs are more expensive... Quote Link to comment Share on other sites More sharing options...
Aussie Quad Racer Posted February 4, 2004 Report Share Posted February 4, 2004 If you have the engine to pull the air mixture in, they pull the right mixture. The correct mixture for air/fuel is 14/6 or 14/7. If you are jetted correctly with a small carb, you will only be able to pull so much air and adjust the jet accordingly. If you can pull the extra with a modded motor, you want to keep the right mixture rather than flood the motor with fuel. 14.7:1 is the correct mixture where an engine will produce the least amount of emissions. its more like 12:1 is roughly where you will want your 2smoker to be jetted at wide open throttle. Idle and midrange all require different mixtures to be smooth and make the most power Quote Link to comment Share on other sites More sharing options...
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