Needle shim mod?
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  1. #1
    Senior Member tcepilot's Avatar
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    Needle shim mod?

    Does it really give you "More Power"? Also, what is needed to do it?
    -tcepilot Hidden Content
    --- Psalm 23 Verses 4-5 ----

    Even though I walk through the valley of the shadow of death, I fear no evil,
    for You are with me; Your rod and Your staff, they comfort me.

    You prepare a table before me in the presence of my enemies; You have anointed
    my head with oil; My cup overflows. (New American Standard Bible)

  2. #2
    Senior Member srs713's Avatar
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    Adjustments to the needle height changes the power in the mid range RPMs.
    Like any other carb mod, you have to be careful with it, going too far makes the bike run poorly.

    The thread "Carb Tuning" explains the relationship between pilot jet, needle, and main jet mods.

    The nice part about carb tuning is there is no permanent change to the bike, and you can go back to stock as quickly as you modded. (but you won't )
    Stephen S.

    '07 TW200:

    15/50 sprockets, O-ring chain, D2Moto foot pegs

    tweaked carb (127.5 jet, 0.019 needle shim, idle screw @2.25),

    Rubbermaid "Action Packer" on homemade brackets

  3. #3
    Senior Member tcepilot's Avatar
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    So would it be alright with stock exhaust?
    -tcepilot Hidden Content
    --- Psalm 23 Verses 4-5 ----

    Even though I walk through the valley of the shadow of death, I fear no evil,
    for You are with me; Your rod and Your staff, they comfort me.

    You prepare a table before me in the presence of my enemies; You have anointed
    my head with oil; My cup overflows. (New American Standard Bible)

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  5. #4
    Super Moderator littletommy's Avatar
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    Just fine with the stock exhaust. If you are going through the carb though, you might want to change your main, adjust the needle, and change the pilot also for maximum affect. For instance, my older style bike and carb (87) took a 112 main, two shims on the needle, and a #42 pilot jet adjusted 2 and 1/2-3/4 out. The bike is used at around 2 thousand feet and hauls butt.
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

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  6. #5
    Senior Member tcepilot's Avatar
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    What size and where do I get the shims?
    -tcepilot Hidden Content
    --- Psalm 23 Verses 4-5 ----

    Even though I walk through the valley of the shadow of death, I fear no evil,
    for You are with me; Your rod and Your staff, they comfort me.

    You prepare a table before me in the presence of my enemies; You have anointed
    my head with oil; My cup overflows. (New American Standard Bible)

  7. #6
    Super Moderator littletommy's Avatar
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    You might have shims on it now. Have you had the carb opened? I gave you my setup details because you have an older bike (my favorite color scheme, by the way) like mine. What altitude are you at? That may make a difference. Procycle has most everything you need and that is the way I went. How about emailing [email protected] along with [email protected] (MrBracket)and see what they say. Give them the details, year, altitude, perhaps what is in there now, etc. Here is their website link and telephone number: Yamaha TW200 Parts and Performance - ProCycle Keep us posted ! Hope this helps!

    Procycle:
    (1-541-688-9543)
    Toll-Free: 1-800-496-5516
    Mon-Fri, 9:30am - 5:00pm PST
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

    Hidden Content <<<Click here. Hidden Content Hidden Content

  8. #7
    Senior Member bananachunks's Avatar
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    McMaster-Carr is where I got mine. Was pointed there by another's post on the forum.

  9. #8
    Senior Member tcepilot's Avatar
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    I'm in Ohio so about 850ft. Not sure what I will do just yet. I'm waiting for winter to come before I open her up. I also need to rebuild the top end. Any kits out there?
    -tcepilot Hidden Content
    --- Psalm 23 Verses 4-5 ----

    Even though I walk through the valley of the shadow of death, I fear no evil,
    for You are with me; Your rod and Your staff, they comfort me.

    You prepare a table before me in the presence of my enemies; You have anointed
    my head with oil; My cup overflows. (New American Standard Bible)

  10. #9
    Senior Member frog13's Avatar
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    tce.....I'm in SW Ohio ( East of Cincinnati ) , I have a 2009 TW and used a #130 main , if thats any help . As mentioned above, go to the carb tuning sticky and proceed . I'm not on here as much as I use to be , I've been retired 9 day's now ! .

  11. #10
    Super Moderator littletommy's Avatar
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    Congrats on the retirement Frog! Stay busy and enjoy it!
    1st John 1:9
    If we confess our sins, He is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.

    John 3:16
    For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.

    John 3:17
    For God sent not his Son into the world to condemn the world; but that the world through him might be saved.

    Hidden Content <<<Click here. Hidden Content Hidden Content

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