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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc. |
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#1
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Carb set up please help
Apologies I am from the UK !!! I thought I would ask the experts >
I have a 2002 EC250,..Ineed some help with settig up the carb, I live 300 feet above sea level I am currently running all stock needle and jets 178 high and 38 pilot. In my manual it saysthe throttle valve cutaway is 7 what is this ? Are the jet sizes ok ? Should i change the stock needle if so what to? Where should the needle clip go ? What does LTR mean ? And finally do the reeds have to be flat against the valve body, or do they have a small gap, I have boysen reeds, and dont know if i should change them or not ? Thanks in anticipation guys, |
#2
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For the stock needle (that year is probably an N1EC or N1ED) - those are okay jets to run. But in my opinion, the needle is too rich and the pilot too lean - they kind of compensate for one another but it causes other problems; Like the mixture being too dependent on idle setting, the carb being too susceptible to environmental changes, and the transition from low to mid is rough. I have heard some refer to this transition as "burble", a "lurch" or "stumble", etc. Quote:
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I noticed in your other post yesterday that you said the bike ran rough at various rpms. The LTR jetting kit cleans up the bottom-mid transition and makes it pull cleaner through this rpm range (providing everything else is right). Sounds like you have some other issues to work through. I would do some general checks to make are getting fuel and have a good spark...
You are very welcome. Hope you like it here! jeff aka webmaster of this website... |
#3
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Thankyou
Thanks for taking time to reply Jeff, everything is much clearer now. I will take all your advice, and think about aquiring an LTR kit (if they ship to the UK)
Thanks Matt
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Matty |
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