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  1. #1
    xplayer2885's Avatar
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    Tau Ceti no jetting change??

    Is it true that if you have a stock motor that with the Tau ceti's there is no jet up requirments?


  2. #2
    100 MILES OF HEAVEN AND I AM SMACK IN THE MIDDLE KEYZBUM's Avatar
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    Quote Originally Posted by xplayer2885 View Post
    Is it true that if you have a stock motor that with the Tau ceti's there is no jet up requirments?
    not true --
    with a less restrictive air path you will need more fuel..
    think how far the air had to travel to get to the mag cyl with the stock airbox-now think with the T/C filters ,,its a short straight path = more air so more fuel is need..
    the experts will confirm later on ,,but i will bet ya 785 cdi on it
    mattman

  3. #3
    xplayer2885's Avatar
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    Quote Originally Posted by KEYZBUM View Post
    not true --
    with a less restrictive air path you will need more fuel..
    think how far the air had to travel to get to the mag cyl with the stock airbox-now think with the T/C filters ,,its a short straight path = more air so more fuel is need..
    the experts will confirm later on ,,but i will bet ya 785 cdi on it
    mattman
    Is the 785 cdi a must?? Whats the specs on the upjet on the carbs. This is my first time messin with jetting so im a lil worried. Tho I am capable of tuning my lo/hi speed settings.

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    You will need to add more fuel to the hi speed circuit.

    Some have said another 1/2 turn OUT should be adequate for the OP, which is about the same as Tau's.

    Other instructions I've seen said to use 105 main jets with the OP.

    First try the screw adjustment. If it looks like it's not enough, get the jets and swap them out.

    You will need to keep an eye on piston wash at first to be sure.

  5. #5
    xplayer2885's Avatar
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    Quote Originally Posted by xlint89 View Post
    You will need to add more fuel to the hi speed circuit.

    Some have said another 1/2 turn OUT should be adequate for the OP, which is about the same as Tau's.

    Other instructions I've seen said to use 105 main jets with the OP.

    First try the screw adjustment. If it looks like it's not enough, get the jets and swap them out.

    You will need to keep an eye on piston wash at first to be sure.
    Ehhh can I play it safe an throw in the 105's into the hi's? What about the low jet, does it stay the same? An each hispeed screw is 1/2 turn out more?

  6. #6
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Sure, you can add the 105's. You just may not need to.

    If you install the 105, I'm not sure where to set the screw. Kedanno posted up the installation instructions in the tech section. Look under Fuji fuel.

    The lows will not need touched at all.

  7. #7
    xplayer2885's Avatar
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    Quote Originally Posted by xlint89 View Post
    Sure, you can add the 105's. You just may not need to.

    If you install the 105, I'm not sure where to set the screw. Kedanno posted up the installation instructions in the tech section. Look under Fuji fuel.

    The lows will not need touched at all.
    I cant find it...An i looked for it.lol

  8. #8
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    HERE it is.

  9. #9
    Rasta Mon Condoms We Be Jammin!!!!! TxVirageTx's Avatar
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    flame arrestor

    the stocker you have is very restrictive.the stocker used on the 96 up fujis is very free flowing and there are tons of them around.i'd start with 1/2 turn out on the highs.you could make some comparisions on jetting of your year and model and say a 96 slt 780 seems like an 1/8 turn is one step on the jet sizing

  10. #10
    xplayer2885's Avatar
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    I was thinking of either playing with needle settings like you mentioned. Or jump up to 102.5 hi jets.

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