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May 28th, 2012, 02:18 PM
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#1 |
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Name: Eric
Location: Robertsdale, AL
Join Date: Mar 2012 Motorcycle(s): <2008 250R> Past Bikes:06 GSXR600 89 CBR1000 78 Hawk 400 86 Ninja 600R 86 & 87 FZ600 81 GPZ550 71 CB360T Posts: 228
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Carb Question
Does anyone know what the functionality of the four highlighted holes are? I just finished installing a SixSigma jet kit and noticed these, but have no idea what they do. Thanks!
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Have you ever read the King James Bible? To say speed kills is akin to saying guns kill, neither of which is true. |
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May 28th, 2012, 02:39 PM
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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Those are idle holes.
When the throttle valve or butterfly plate is close to or completely closed, some air by-passes it via these little passages cast into the carb's body to feed the idle system.
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Motofool  .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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May 28th, 2012, 03:22 PM
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#3 |
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<><><><><><><><><>
Name: Eric
Location: Robertsdale, AL
Join Date: Mar 2012 Motorcycle(s): <2008 250R> Past Bikes:06 GSXR600 89 CBR1000 78 Hawk 400 86 Ninja 600R 86 & 87 FZ600 81 GPZ550 71 CB360T Posts: 228
Blog Entries: 3
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Do you know where the holes lead to? There is a brass plug on the opposite side of the holes.
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Have you ever read the King James Bible? To say speed kills is akin to saying guns kill, neither of which is true. |
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May 28th, 2012, 04:49 PM
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#4 |
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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The brass plug is to close the passage after a long drill opens it.
Using that trick, the manufacturer can achieve bends or U-shapes just using drills. The holes lead to the mixture screw, where air (induced by strong vacuum) from them plus fuel from the pilot jet mix to feed the engine at idle rpm's and some rpm's above those.
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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May 28th, 2012, 06:13 PM
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#5 |
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<><><><><><><><><>
Name: Eric
Location: Robertsdale, AL
Join Date: Mar 2012 Motorcycle(s): <2008 250R> Past Bikes:06 GSXR600 89 CBR1000 78 Hawk 400 86 Ninja 600R 86 & 87 FZ600 81 GPZ550 71 CB360T Posts: 228
Blog Entries: 3
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Thanks, Hernan! I appreciate the info!
__________________________________________________
Have you ever read the King James Bible? To say speed kills is akin to saying guns kill, neither of which is true. |
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May 28th, 2012, 06:41 PM
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#6 |
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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You are welcome, Eric.
I was working on your area three weeks ago, staying in Spanish Fort. Here you can learn more about carburetors, if you are interested: http://www.dansmc.com/carbs2.htm
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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May 28th, 2012, 07:10 PM
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#7 |
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<><><><><><><><><>
Name: Eric
Location: Robertsdale, AL
Join Date: Mar 2012 Motorcycle(s): <2008 250R> Past Bikes:06 GSXR600 89 CBR1000 78 Hawk 400 86 Ninja 600R 86 & 87 FZ600 81 GPZ550 71 CB360T Posts: 228
Blog Entries: 3
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Really; what kind of work do you do?
Cool link!
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Have you ever read the King James Bible? To say speed kills is akin to saying guns kill, neither of which is true. |
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May 29th, 2012, 05:36 AM
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#8 |
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Daily Ninjette rider
Name: Hernan
Location: Florida
Join Date: Mar 2011 Motorcycle(s): 2007 Ninja 250 Posts: A lot.
MOTY - 2016, MOTM - Dec '12, Jan '14, Jan '15, May '16
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PM sent
__________________________________________________
Motofool .................................Never ride faster than your guardian angel can fly "Mankind is composed of two sorts of men — those who love and create, and those who hate and destroy. Love is the bond between men, the way to teach and the center of the world." - José Martí |
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